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CAS No. : | 150-86-7 | MDL No. : | MFCD00151280 |
Formula : | C20H40O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BOTWFXYSPFMFNR-PYDDKJGSSA-N |
M.W : | 296.53 | Pubchem ID : | 5280435 |
Synonyms : |
(E)-Phytol;trans-Phytol
|
Chemical Name : | (7R,11R,E)-3,7,11,15-Tetramethylhexadec-2-en-1-ol |
Num. heavy atoms : | 21 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 0.9 |
Num. rotatable bonds : | 13 |
Num. H-bond acceptors : | 1.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 98.94 |
TPSA : | 20.23 Ų |
GI absorption : | Low |
BBB permeant : | No |
P-gp substrate : | Yes |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | Yes |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -2.29 cm/s |
Log Po/w (iLOGP) : | 4.77 |
Log Po/w (XLOGP3) : | 8.19 |
Log Po/w (WLOGP) : | 6.36 |
Log Po/w (MLOGP) : | 5.25 |
Log Po/w (SILICOS-IT) : | 6.57 |
Consensus Log Po/w : | 6.23 |
Lipinski : | 1.0 |
Ghose : | None |
Veber : | 1.0 |
Egan : | 1.0 |
Muegge : | 2.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -5.98 |
Solubility : | 0.00031 mg/ml ; 0.00000105 mol/l |
Class : | Moderately soluble |
Log S (Ali) : | -8.47 |
Solubility : | 0.000000994 mg/ml ; 0.0000000034 mol/l |
Class : | Poorly soluble |
Log S (SILICOS-IT) : | -5.51 |
Solubility : | 0.000906 mg/ml ; 0.00000305 mol/l |
Class : | Moderately soluble |
PAINS : | 0.0 alert |
Brenk : | 1.0 alert |
Leadlikeness : | 2.0 |
Synthetic accessibility : | 4.3 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With boron trifluoride anschliessend Behandeln mit Ag2O; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane; oxalic acid Siedetemperatur; | ||
With oxalic acid at 140℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane; oxalic acid at 75℃; | ||
With acetic acid; samarium(III) trifluoromethanesulfonate In Petroleum ether for 4h; Inert atmosphere; | 1.2 under the protection of nitrogen in the above solution added2 g of samarium trifluoromethanesulfonate2g acetic acid, stirring heated to reflux, slowly dropping containing 60g 50% of the phytol in petroleum ether solution,After the dropwise addition, the mixture was kept at reflux for 4 hours,After completion of the reaction,After cooling to room temperature, 50 g of ferric chloride was added,The reaction was stirred for 5 hours,After the filtrate was washed with saturated brine, 4g of anhydrous sodium sulfate, 3g of aluminum oxide and 3g of activated carbon were added to decolorize and filter.The filtrate was concentrated under reduced pressure to give vitamin K126.5g. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane; oxalic acid at 75℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77% | With scandium tris(trifluoromethanesulfonate) In toluene at 110℃; for 0.5h; Microwave irradiation; Green chemistry; | |
With hydrogenchloride; diethyl ether | ||
With ethanol; phosphorus pentoxide |
With zinc(II) chloride; decalin | ||
With boron trifluoride 1.) n-heptane, 90 deg C, 5 min, 2.) reflux, 18 h; Multistep reaction; | ||
With hydrogenchloride; diethyl ether | ||
With zinc(II) chloride; decalin |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane; oxalic acid at 91℃; bei Lichtausschluss; Isolierung ueber 2-<(<i>R</i>:11<i>R</i>)-<i>trans</i>-phytyl>-naphthalintriol-(1.3.4) <nicht naher beschrieben>; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane; oxalic acid at 75℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With formic acid Erwaermen des Reaktionsprodukts mit wss.-aethanol. Salzsaeure; | ||
With formic acid Erwaermen des Reaktionsprodukts mit wss.-aethanol. Salzsaeure; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With formic acid Hydrieren des Reaktionsprodukts an Palladium/Kohle in wss.-aethanol. Salzsaeure; | ||
With formic acid Hydrieren des Reaktionsprodukts an Palladium/Kohle in wss.-aethanol. Salzsaeure; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With ozone In methanol; dichloromethane at -20℃; for 6.5h; | 14 Example 14, Preparation of Compound XVIII Put 50.0g (0.17mol) of phytol XVII in a dry reaction flask, add 500mL of dichloromethane and 100mL of methanol solution, pump ozone gas into the mixed solution, react at -20°C for 6.5h, remove under reduced pressure The organic solvent was subjected to column chromatography to obtain 38.5 g of a colorless oily liquid with a yield of 85%. |
76% | Stage #1: [R-[R*,R*-(E)]]-3,7,11,15-tetramethyl-2-hexadecen-1-ol With ozone In methanol; dichloromethane at -78℃; Stage #2: With dimethylsulfane In methanol; dichloromethane at 20℃; for 2.5h; Further stages.; | |
75% | With potassium permanganate In acetone |
72% | With potassium permanganate In acetone at 20℃; for 4h; | |
72% | With potassium permanganate In acetone for 3h; | |
70% | With potassium permanganate In acetone | |
With ozone | ||
With ozone | ||
With formic acid; dihydrogen peroxide; ozone 1.) ethyl chloride, -78 deg C, 2.) RT, 4 h; Yield given. Multistep reaction; | ||
With ozone In methanol; dichloromethane at -78℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane at 60 - 65℃; Behandeln des Reaktionsprodukts mit Ag2O in Aether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane at 75℃; Behandeln des Reaktionsprodukts mit Ag2O und MgSO4 in Aether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane at 75℃; Behandeln der Reaktionsprodukte mit Ag2O und MgSO4 in Aether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane at 75℃; Behandeln der Reaktionsprodukte mit Ag2O und MgSO4 in Aether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With manganese(IV) oxide In dichloromethane for 24h; Reflux; | |
75% | With pyridine; chromium(VI) oxide In dichloromethane | |
74% | With pyridinium chlorochromate In dichloromethane for 6h; Reflux; |
74% | With pyridinium chlorochromate for 6h; Reflux; | PhY-12(3, 7, 11, 15-tetramethyl-2-hexadecenal) Pyridinium chlorochromate (3 mmol) was added to a solutionof phytol (2 mmol) in dry CH2 Cl2. The reaction mixturewas reflux for 6 h, and then the solvent was removed byevaporation. The residue was extracted with chloroform inexcess water. The combined organic extracts were dried andevaporated to give crude products which, after purificationby column chromatography on silica gel, afforded pureproduct 12 (PhY-12) as a viscous colorless liquid in 74%yield (435.5 mg) (purity >95%). |
With pyridine; chromium(VI) oxide; silica gel; acetic acid In dichloromethane | ||
With manganese(IV) oxide In dichloromethane | ||
With manganese(IV) oxide | ||
With manganese(IV) oxide In Petroleum ether Heating; | ||
With pyridine; chromium(VI) oxide In dichloromethane |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With hydrogen In ethanol for 72h; | |
100% | With hydrogen In ethanol at 20℃; for 72h; | |
96% | With platinum(IV) oxide; hydrogen In tetrahydrofuran at 20℃; for 4h; | AA14 Molecule A27: Product Obtained by Hydrogenation of Phytol Platinum oxide (PtO2, 1.15 g, 6.61 mmol) is added to a solution of phytol (30.00 g, 101.20 mmol) in THF (450 mL) under argon, and the mixture is placed under 1 bar of dihydrogen, then stirred for 4 h at ambient temperature. After filtration through celite rinsing with THF, a black oil of molecule A27 is obtained by concentration at reduced pressure.Yield: 29.00 g (96%).1H NMR (CDCl3, ppm): 0.84 (6H); 0.86 (6H); 0.89 (3H); 1.00-1.46 (22H); 1.46-1.68 (3H); 3.61-3.73 (2H). |
95% | With hydrogen In ethanol for 72h; | |
92% | With <(S)-BINAP>chloro(p-cymene)ruthenium chloride; hydrogen In methanol for 96h; Ambient temperature; 90 kgf/cm2; | |
89% | With hydrazine hydrate; propionic acid In ethanol at 50 - 60℃; for 312h; | |
48% | With hydrogen | |
With hydrogen | ||
Multi-step reaction with 3 steps 1: MnO2 2: (i), (ii) MnO2, AcOH 3: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 3 steps 1: MnO2 2: (i), (ii) MnO2, AcOH 3: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 4 steps 1: MnO2 2: AgNO3 4: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 4 steps 1: MnO2 2: AgNO3 4: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 3 steps 1: MnO2 2: AgNO3 3: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 3 steps 1: MnO2 2: AgNO3 3: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 2 steps 1: MnO2 2: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 2 steps 1: MnO2 2: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 3 steps 1: HBr 2: acetone 3: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 3 steps 1: HBr 2: acetone 3: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 2 steps 1: HBr 2: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
Multi-step reaction with 2 steps 1: HBr 2: (i) (hydroboration), (ii) H2O2, Na2CO3 | ||
With hydrogen In tetrahydrofuran for 24h; | 1 To a solution of 1.00 g phytol in dry tetrahydrofuran was added 0.10 g 5% palladium on carbon. The mixture was allowed to stir 24 h under hydrogen at 1 atm. The catalyst was removed by centrifugation and the solvent was then removed by rotary evaporation. The resulting oil was purified by molecular distillation at about 100° C. and 0.1 mm Hg to give a colorless oil | |
In methanol | R.1 Synthesis of 2,3-dihydrophytol Reference Example 1 Synthesis of 2,3-dihydrophytol Phytol (10.00 g, 33.7 mmol) was dissolved in methanol, Pt/C (2%, 1.00 g) was suspended therein and the suspension was stirred overnight under a hydrogen atmosphere. After completion of the reaction, the suspension was filtered to remove Pt/C, and the filtrate was concentrated to give 2,3-dihydrophytol. This was used for the next reaction without purification. 1H-NMR (300 MHz): δ 0.80-0.93 (15H, m, Me), 0.98-1.70 (24H, br, m, Me2CH-[C3H6-CHMe]3-CH2CH2-OH), 3.62-3.75 (2H, -CH2-OH). | |
In methanol | P.1 Synthesis of 2,3-dihydrophytol Preparation Example 1 Synthesis of 2,3-dihydrophytol Phytol (10.00 g, 33.7 mmol) was dissolved in methanol, Pt/C (2%, 1.00 g) was suspended therein and the suspension was stirred overnight under a hydrogen atmosphere. After completion of the reaction, the suspension was filtered to remove Pt/C, and the filtrate was concentrated to give 2,3-dihydrophytol. This was used for the next reaction without purification. | |
With hydrogen; nickel Autoclave; | ||
With 2 % platinum on carbon; hydrogen In methanol | 1 Preparation Example 1: Synthesis of 2,3-dihydrophytol Phytol (10.00 g, 33.7 mmol) was dissolved in methanol, Pt/C (2%, 1.00 g) was suspended therein and the suspension was stirred overnight under a hydrogen atmosphere. After completion of the reaction, the suspension was filtered to remove Pt/C, and the filtrate was concentrated to give 2,3-dihydrophytol. This was used for the next reaction without purification. | |
With 2 % platinum on carbon; hydrogen In methanol | 1 Preparation Example 1 Synthesis of 2,3-dihydrophytol Phytol (10.00 g, 33.7 mmol) was dissolved in methanol, Pt/C (2%, 1.00 g) was suspended therein and the suspension was stirred overnight under a hydrogen atmosphere. After completion of the reaction, the suspension was filtered to remove Pt/C, and the filtrate was concentrated to give 2,3-dihydrophytol. This was used for the next reaction without purification. |
|
With hydrogen In ethanol at 20℃; for 72h; | ||
With platinum on activated charcoal; hydrogen In methanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With pyridine; phosphorus tribromide In benzene at 4 - 35℃; for 3.5h; | |
86% | With phosphorus tribromide In benzene at 4 - 35℃; for 4.5h; | PhY-11(1-bromo-3, 7, 11, 15-tetramethyl-2-hexadecene) PBr3 (3 mmol) was added to solution of phytol (2 mmol) indry benzene. The reaction mixture was left at 4 °C for30 min, followed by stirring at room temperature (30-35 °C)for 3 h. After completion, the solvent was removed byevaporation, and the residue was extracted with chloroform.The combined organic extracts were dried and evaporated togive crude products, which on purification by columnchromatography on silica gel, afforded pure product 11(PhY-11) as a viscous dirty-white liquid in 86% yield(619.5 mg) (purity >95%). |
With phosphorus tribromide In pyridine |
With hydrogen bromide | ||
With pyridine; phosphorus tribromide In hexane at 0 - 20℃; for 3h; Inert atmosphere; | 1. Synthesis of (7R,11R,E)-1-bromo-3,7,11,15-tetramethylhexadec-2-ene 61 To a well stirred solution of phytol (350 mg, 1.18 mmol), pyridine (48 L) and hexane (0.70 mL) under Argon atmosphere at 0° were added dropwise a solution of PBr3 (640 mg, 2.26 mmol) in hexane (0.24 mL). After stirring for 3 hours at room temperature the mixture was quenched with ice water (10 mL) and extracted with DCM (3 x 15 mL). The combined organic layers were washed with 1N HCl (10 mL), saturated NaHCO3 solution, dried over MgSO4 and concentrated in vacuo to give the desired product 6 as a colorless oil, which was used for the next step without further purification and without structure determination. HPLC: Rt = 12.09 min. | |
With carbon tetrabromide; triphenylphosphine In dichloromethane at 20℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With copper(l) iodide In tetrahydrofuran at -20 - 0℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With titanium(IV) isopropylate; tert.-butylhydroperoxide; diethyl (2S,3S)-tartrate In nonane; dichloromethane at -20℃; for 3h; Molecular sieve; Inert atmosphere; | |
85% | With titanium(IV) isopropylate; Dimethyl D-tartrate; Trimethylacetic acid In dichloromethane at -20℃; | |
With 3-chloro-benzenecarboperoxoic acid In dichloromethane |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With hydrogen In methanol for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | With pyridine In hexane at 21 - 23℃; for 18h; | |
16 mg | With pyridine Ambient temperature; | |
With pyridine |
19 mg | With pyridine at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | With hydrogenchloride; ammonium chloride In tetrahydrofuran at 0 - 20℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With pyridinium p-toluenesulfonate In ethanol at 55℃; for 1.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With sodium hydride In N,N-dimethyl-formamide Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64.8% | With dmap; dicyclohexyl-carbodiimide In dichloromethane Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With 3-chloro-benzenecarboperoxoic acid In chloroform for 0.75h; | |
55% | With methyl hexanoate; CpLIP2 Y179F (ipase/acyltransferase) from Candida parapsilosis; dihydrogen peroxide In aq. phosphate buffer; water at 20℃; Enzymatic reaction; | |
With dihydrogen peroxide; methyltrioxorhenium(VII) In aq. phosphate buffer at 20℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With deuteromethanol; water-d2 for 13h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With phthalic anhydride | ||
With phthalic anhydride; toluene-4-sulfonic acid; benzene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With phthalic anhydride | ||
With phthalic anhydride; toluene-4-sulfonic acid; benzene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | With hydrogen In ethanol; water at 20℃; for 72h; | |
90% | With platinum(IV) oxide hydrate; hydrogen; sodium hydrogencarbonate In tetrahydrofuran at 20℃; for 12h; Inert atmosphere; | |
82.3% | With hydrogen In ethanol | 8 Preparation of dihydrophytol EXAMPLE 8 Preparation of dihydrophytol Phytol (30.0 g, 0.101 mol) was dissolved in 200 ml of ethanol. A suspension of 1.8 g of Raney-Ni (W-1) in 5 ml of ethanol was added thereto, and hydrogenation was carried out under hydrogen for about 5 hours so that 2405 ml of hydrogen (theoretical volume at 24° C.; 2465 ml) was absorbed. After filtering off the catalyst through a filter paper, the ethanol was evaporated. Yield 29.9 g. Silica gel column chromatography with benzene-hexane (1:1) gave 24.7 g of the title compound (yield 82.3%). |
With hydrogen In ethanol for 5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
83% | With 1,3,5-trichloro-2,4,6-triazine; 4-methylmorpholine N-oxide In chloroform at -10 - 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With pyridine; dmap at 30 - 35℃; for 14h; | |
85% | With triethylamine In hexane at 80℃; for 2h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | With lithium aluminium tetrahydride In diethyl ether Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
47% | With boron trifluoride diethyl etherate In 1,4-dioxane; ethyl acetate at 50℃; for 3h; | |
37.9% | With boron trifluoride diethyl etherate In diethyl ether at 80℃; for 2h; | 5 Synthesis of 2-Methyl-3-phytyl-1,4-naphthohydroquinone Monoacetate (5) 2-Methyl- 1 ,4-naphthohydroquinone Monoacetate (4) (6 g), phytol (12.4 g) and BF3"OEt2 (0.78 g) were dissolved in ether (18 g) and heated to 80°C for 2 hrs. Ether was removed by concentrated. MeOH (9 g) was added and extracted with Heptane (30 g). The organic layer was concentrated and purified by column chromatography (Heptan:ethyl acetate system), thereby obtaining 5.0 g the title compound (Yield: 37.9%, HPLC purity: 99.9%). |
37.9% | With boron trifluoride diethyl etherate In diethyl ether at 80℃; for 2h; | 5 Synthesis of 2-methyl-3-phytyl-1,4-naphthohydroquinone monoacetate 2-Methyl- 1 ,4-naphthohydroquinone Monoacetate (4) (6 g), phytol (12.4 g) and BF3"OEt2 (0.78 g) were dissolved in ether (18 g) and heated to 80°C for 2 hrs. Ether was removed by concentrated. MeOH (9 g) was added and extracted with Heptane (30 g). The organic layer was concentrated and purified by column chromatography (Heptan:ethyl acetate system), thereby obtaining 5.0 g the title compound (Yield: 37.9%, HPLC purity: 99.9%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating | ||
Multi-step reaction with 2 steps 1: 89 percent / hydrazine hydrate, propionic acid / ethanol / 312 h / 50 - 60 °C 2: 81 percent / 47 percent aq. HBr, H2SO4 / 5.5 h / 140 °C | ||
Multi-step reaction with 2 steps 1: nickel; hydrogen / 2068.65 Torr / Autoclave 2: sulfuric acid; hydrogen bromide / Inert atmosphere |
Multi-step reaction with 2 steps 1: 2 % platinum on carbon; hydrogen / methanol 2: sulfuric acid; hydrogen bromide / water / 100 °C | ||
Multi-step reaction with 2 steps 1: 2 % platinum on carbon; hydrogen / methanol 2: hydrogen bromide; sulfuric acid / 100 °C | ||
Multi-step reaction with 2 steps 1: hydrogen / ethanol / 72 h / 20 °C 2: carbon tetrabromide; triphenylphosphine / dichloromethane / 2 h / 20 °C | ||
Multi-step reaction with 2 steps 1: platinum on activated charcoal; hydrogen / methanol 2: hydrogen bromide; sulfuric acid / 100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3: 81 percent / dimethylformamide / 4 h / 130 °C 4: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3: 81 percent / dimethylformamide / 4 h / 130 °C 4: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating 5: 91 percent / pyridine / 48 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3: 81 percent / dimethylformamide / 4 h / 130 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2.1: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3.1: 81 percent / dimethylformamide / 4 h / 130 °C 4.1: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating 5.1: 91 percent / pyridine / 48 h / 20 °C 6.1: 71 percent / morpho-CDI; DMAP / CH2Cl2 / 24 h / 20 °C 7.1: CF3CO2H / 2 h / 20 °C 7.2: 100 percent / K2CO3 / CH2Cl2 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3: 81 percent / dimethylformamide / 4 h / 130 °C 4: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating 5: 91 percent / pyridine / 48 h / 20 °C 6: 71 percent / morpho-CDI; DMAP / CH2Cl2 / 24 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3: 81 percent / dimethylformamide / 4 h / 130 °C 4: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating | ||
Multi-step reaction with 8 steps 1.1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2.1: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3.1: 81 percent / dimethylformamide / 4 h / 130 °C 4.1: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating 5.1: 91 percent / pyridine / 48 h / 20 °C 6.1: 71 percent / morpho-CDI; DMAP / CH2Cl2 / 24 h / 20 °C 7.1: CF3CO2H / 2 h / 20 °C 7.2: 100 percent / K2CO3 / CH2Cl2 8.1: 80 percent / pyridine / 24 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3: 81 percent / dimethylformamide / 4 h / 130 °C 4: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating 5: 18 percent / morpho-CDI; DMAP / CH2Cl2 / 24 h | ||
Multi-step reaction with 9 steps 1.1: 100 percent / H2 / Raney nickel / ethanol / 72 h 2.1: 87.5 g / HBr; H2SO4 / H2O / 6 h / Heating 3.1: 81 percent / dimethylformamide / 4 h / 130 °C 4.1: 85 percent / H2NNH2*H2O / ethanol / 2.5 h / Heating 5.1: 91 percent / pyridine / 48 h / 20 °C 6.1: 71 percent / morpho-CDI; DMAP / CH2Cl2 / 24 h / 20 °C 7.1: CF3CO2H / 2 h / 20 °C 7.2: 100 percent / K2CO3 / CH2Cl2 8.1: 80 percent / pyridine / 24 h / 20 °C 9.1: 18 percent / morpho-CDI; DMAP / CH2Cl2 / 24 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: D2O, CH3OD / PtO2 / 13 h / Ambient temperature 2: 93 percent / I2, PPh3, imidazole / benzene / 0.5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: D2O, CH3OD / PtO2 / 13 h / Ambient temperature 2: 93 percent / I2, PPh3, imidazole / benzene / 0.5 h / Ambient temperature 3: 1.) n-BuLi, 2.) HMPA / 1.) THF, hexane, a) -78 deg C, 30 min, b) -20 deg C, 30 min, 2.) THF, hexane, -78 deg C, 30 min 4: Na-Hg / tetrahydrofuran; methanol / 2.5 h / Ambient temperature 5: H2 / 10percent Pd/C / ethyl acetate / 1.5 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: D2O, CH3OD / PtO2 / 13 h / Ambient temperature 2: pyridine / 2 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: D2O, CH3OD / PtO2 / 13 h / Ambient temperature 2: 93 percent / I2, PPh3, imidazole / benzene / 0.5 h / Ambient temperature 3: 1.) n-BuLi, 2.) HMPA / 1.) THF, hexane, a) -78 deg C, 30 min, b) -20 deg C, 30 min, 2.) THF, hexane, -78 deg C, 30 min 4: Na-Hg / tetrahydrofuran; methanol / 2.5 h / Ambient temperature 5: H2 / 10percent Pd/C / ethyl acetate / 1.5 h 6: Et3N, DMAP / CH2Cl2 / 2 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: D2O, CH3OD / PtO2 / 13 h / Ambient temperature 2: 93 percent / I2, PPh3, imidazole / benzene / 0.5 h / Ambient temperature 3: 1.) n-BuLi, 2.) HMPA / 1.) THF, hexane, a) -78 deg C, 30 min, b) -20 deg C, 30 min, 2.) THF, hexane, -78 deg C, 30 min 4: Na-Hg / tetrahydrofuran; methanol / 2.5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: D2O, CH3OD / PtO2 / 13 h / Ambient temperature 2: 93 percent / I2, PPh3, imidazole / benzene / 0.5 h / Ambient temperature 3: 1.) n-BuLi, 2.) HMPA / 1.) THF, hexane, a) -78 deg C, 30 min, b) -20 deg C, 30 min, 2.) THF, hexane, -78 deg C, 30 min |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 92 percent / H2, <(S)-BINAP>chloro(p-cymene)uthenium chloride / methanol / 96 h / Ambient temperature; 90 kgf/cm2 2: pyridine / 2 h / 0 °C 3: 63 percent / NaH / dimethylsulfoxide / 67 h / 40 °C 4: 92 percent / H2 / Pd-C / ethyl acetate / 29 h / 40 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 92 percent / H2, <(S)-BINAP>chloro(p-cymene)uthenium chloride / methanol / 96 h / Ambient temperature; 90 kgf/cm2 2: pyridine / 2 h / 0 °C 3: 63 percent / NaH / dimethylsulfoxide / 67 h / 40 °C 4: 92 percent / H2 / Pd-C / ethyl acetate / 29 h / 40 °C 5: 2.) H2O / 1.) pyridine, room temperature, 2 h, 2.) room temperature, 1 h, 3.) toluene, CH3CN, 50-60 deg C, 3 d |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 100 percent / H2 / <(S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl>diacetatoruthenium(II) / methanol / 24 h / 77572.2 Torr 2: 87 percent / 48percent HBr aq., conc. H2SO4 / 24 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 100 percent / H2 / <(S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl>diacetatoruthenium(II) / methanol / 24 h / 77572.2 Torr 2: 85 percent / CrO3 / acetone; aq. acetic acid / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 100 percent / H2 / <(S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl>diacetatoruthenium(II) / methanol / 24 h / 77572.2 Torr 2: 85 percent / CrO3 / acetone; aq. acetic acid / 1 h / Ambient temperature 3: oxalyl chloride / diethyl ether; dimethylformamide / 0.5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 100 percent / H2 / <(S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl>diacetatoruthenium(II) / methanol / 24 h / 77572.2 Torr 2: 87 percent / 48percent HBr aq., conc. H2SO4 / 24 h / Heating 3: 94 percent / thiourea / aq. ethanol / 3 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 100 percent / H2 / <(S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl>diacetatoruthenium(II) / methanol / 24 h / 77572.2 Torr 2: 85 percent / CrO3 / acetone; aq. acetic acid / 1 h / Ambient temperature 3: oxalyl chloride / diethyl ether; dimethylformamide / 0.5 h / Ambient temperature 4: Et3N / CHCl3 / 0.5 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 73 percent / Ba(OH)2 / methanol 2: POCl3 / 0.5 h 3: dimethylformamide / 3 h / 80 °C 4: 72 percent / Mg / Li2CuCl4 / tetrahydrofuran / 10 min, -78 deg C then 2 h, 0 deg C then 15 h, r.t. 5: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C | ||
Multi-step reaction with 5 steps 1: 73 percent / Ba(OH)2 / methanol 2: POCl3 / 0.5 h 3: dimethylformamide / 3 h / 80 °C 4: 57 percent Chromat. / Mg / CuI / tetrahydrofuran 5: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C | ||
Multi-step reaction with 4 steps 1: 73 percent / Ba(OH)2 / methanol 2: POCl3 / 0.5 h 3: 48 percent Chromat. / Mg / CuCl / tetrahydrofuran 4: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C |
Multi-step reaction with 4 steps 1: 73 percent / Ba(OH)2 / methanol 2: POCl3 / 0.5 h 3: 33.7 percent / Li2CuCl4 / tetrahydrofuran / 2 h / 0 °C 4: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: POCl3 / 0.5 h 2: dimethylformamide / 3 h / 80 °C 3: 72 percent / Mg / Li2CuCl4 / tetrahydrofuran / 10 min, -78 deg C then 2 h, 0 deg C then 15 h, r.t. 4: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C | ||
Multi-step reaction with 4 steps 1: POCl3 / 0.5 h 2: dimethylformamide / 3 h / 80 °C 3: 57 percent Chromat. / Mg / CuI / tetrahydrofuran 4: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C | ||
Multi-step reaction with 3 steps 1: POCl3 / 0.5 h 2: 48 percent Chromat. / Mg / CuCl / tetrahydrofuran 3: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C |
Multi-step reaction with 3 steps 1: POCl3 / 0.5 h 2: 33.7 percent / Li2CuCl4 / tetrahydrofuran / 2 h / 0 °C 3: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: dimethylformamide / 3 h / 80 °C 2: 72 percent / Mg / Li2CuCl4 / tetrahydrofuran / 10 min, -78 deg C then 2 h, 0 deg C then 15 h, r.t. 3: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C | ||
Multi-step reaction with 3 steps 1: dimethylformamide / 3 h / 80 °C 2: 57 percent Chromat. / Mg / CuI / tetrahydrofuran 3: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C | ||
Multi-step reaction with 2 steps 1: 48 percent Chromat. / Mg / CuCl / tetrahydrofuran 2: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C |
Multi-step reaction with 2 steps 1: 33.7 percent / Li2CuCl4 / tetrahydrofuran / 2 h / 0 °C 2: 94 percent / pyridinium-p-toluolsulfonate / ethanol / 1.5 h / 55 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: POCl3 / 0.5 h 3: KOH / methanol; hexane; H2O / 2 h / Ambient temperature | ||
Multi-step reaction with 3 steps 1: 82 percent / NaH (in oil) / dimethylformamide / Ambient temperature 3: KOH / methanol; hexane; H2O / 2 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | In diethyl ether; dichloromethane | 8.a (a) (a) Preparation of (2S,3S)-epoxy-(3S,7R,11R)-3,7,11,15-tetramethylhexadecane-1-ol STR44 In an atmosphere of an argon stream and at -30 ° C., 1.45 ml (6.90 mmol) of D-(-)-diisopropyl tartrate and 2.05 ml (6.89 mmol) of titanium tetraisopropoxide were added to a suspension of 2.38 g of 4A molecular sieves in 20 ml of dichloromethane. After the reaction mixture was allowed to stand for 7 minutes, a solution (5.60 ml; 9.86 mmol) of t-butylperoxide (1.76 mol) in dichloromethane was added, and the whole was stirred at the same temperature for 105 minutes. Then, a solution of 2.01 g (6.77 mmol) of phytol, i.e., (3S,7R,11R)-1-hydroxy-3,7,11,15-tetramethyl-2-hexadecene (26) in 40 ml of dichloromethane, was added dropwise over 10 minutes, and the whole was stirred for 16 hours under the same conditions. Then, 6.0 ml of an aqueous 3N-K2 CO3 solution was added, and the reaction mixture was heated to a room temperature. Further, 4.0 g of celite was added 1 hour later, and the whole was stirred for 15 minutes. Then, the celite was filtered off, the filtrate was concentrated under a reduced pressure, diethyl ether and H2 O were added, and the organic layer was taken. The aqueous layer was extracted with diethyl ether. The resulting extract and the above organic layer were combined together, washed with an aqueous sodium chloride solution, and dried over magnesium sulfate. Thereafter, the solvent was evaporated under a reduced pressure to obtain 3.52 g of a crude product as a light yellow oil. The crude product was treated by column chromatography wherein 80 g of silica gel was used, and 2.00 g (yield: 95%) of the above-mentioned epoxide compound (201) was obtained as a colorless oil from the diethyl ether/n-hexane (1:4, v/v) effluent. [α]D26 =+4.44° (c=0.99, CHCl3). [α]D28 =+4.88° (c=2.80, ethyl alcohol). IR νmax (neat) cm-1: 3430, 1460, 1380, 1030, 865. H-NMR (CDCl3, δ): 0.70-1.83 (37H, m, 1H exchangeable), 2.96 (1H, dd, J=6.1 Hz, 4.6 Hz), 3.45-4.03 (2H, m), Sharp peaks: 0.83, 0.88, 0.90, 1.60. C-NMR (CDCl3, δ): 16.74 (q), 19.64 (q), 19.75 (q), 22.55 (t), 22.64 (q), 22.73 (q), 24.48 (t), 24.80 (t), 27.98 (d), 32.75 (d), 32.79 (d), 36.96 (t), 37.30 (t), 37.34 (t), 37.43 (t), 38.84 (t), 39.38 (t), 61.39 (t), 61.47 (s), 63.20 (d). MS m/z: 312 (M+), 294, 281, 250, 97, 71, 57 (100%). High-MS m/z (M+): Calculated (C20 H40 O2): 312.3028; Found: 312.3053. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In water | XXIV Preparation of 6,10-Dimethyl-2-undecanone: EXAMPLE XXIV Preparation of 6,10-Dimethyl-2-undecanone: Hydrogenation of Carbon-Carbon Double Bonds in the Presence of a Ketone Catalytic hydrogenation of 6,10-dimethyl-3,5,9-undecatrien-2-one, also known as pseudoionone (17.8 g, 92.6 mmoles, purchased from Pfaltz & Bauer, Waterbury, Conn.) was effected over 5% palladium on activated carbon (1.01 g) at room temperature and 2-3 atmospheres (H2 pressure) using ethyl alcohol (50 mL) as a solvent. After 30 minutes, the catalyst was removed by filtration through a small pad of Hyflo Super-Cel filtering aid. After dilution of the filtrate with 500 mL of water, the product was isolated by extraction (3*75 mL) with hexane. The combined extracts were dried over anhydrous magnesium sulfate and filtered. Removal of the volatile organic solvents by evaporation at reduced pressure, followed by distillation, afforded 15.95 g (87% yield) of the named ketone: boiling point 68°-72° C. at 0.15 mm. The identity of this known ketone was ascertained by proton NMR analysis. For use of this ketone to prepare phytol see: F. G. Fischer and K. Lowenberg, Ann., 475, 183 (1929). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91.3% | With tert.-butylhydroperoxide; sodium hydroxide In CHCl3 -benzene; diethyl ether; dichloromethane | 1 Synthesis of (2S,3S)-epoxy-(3S,7R,11R)-3,7,11,15-tetramethylhexadecane-1-ol (formula II') EXAMPLE 1 Synthesis of (2S,3S)-epoxy-(3S,7R,11R)-3,7,11,15-tetramethylhexadecane-1-ol (formula II') A solution of 11.4 g (40 mM) of titanium tetraisopropoxide and 8.24 g (40 mM) of L-(+)-diethyl tartrate in 400 ml of dry dichloromethane was stirred at -20° C. to -30° C. in a nitrogen atmosphere. After stirring for 10 min., 12 g (40 mM) of natural phytol in 30 ml of dry dichloromethane was added and then a dichloroethane solution containing 80 mM of t-butyl hydroperoxide was added. The reaction was monitored by thin layer chromatography (tlc). (CHCl3 -benzene solvent). After stirring for 2 hours at -20° C. to -30° C., 100 ml of 10% tartric acid solution was added and the drying bath was then removed. The organic layer was separated and washed with water. The dried organic solution was concentrated under water aspirator pressure to give 12.4 g of a colorless oil. This crude product was dissolved in 300 ml of diethyl ether and 120 ml of 1 N sodium hydroxide solution was added with ice cooling. After stirring for 30 min., the organic layer was separated, washed with water and dried over magnesium sulfate. This diethyl ether solution was concentrated under water aspirator pressure to give 12.2 g of a colorless liquid. This crude material was chromatographed on 200 g of 60 to 80 mesh silica gel. Elution with n-hexane-ethyl acetate gave 11.7 g of the pure title compound (yield: 91.3%). [α]D25 =-4.4° (c 3.63 ETOH). Anal. Calcd. for C20 H40 O2 =C, 76.86%; H, 12.90%. Found: C, 77.14%; H, 12.75%. IR νcm-1 =3,400. NMR (CDCl3) δ: 0.87 (d, 6H, J=6 Hz) 1.30 (s, 3H) 2.20 (m, 1H) 2.97 (d-d, 1H) 3.48-4.00 (m, 2H). MS m/e=294. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With ammonium chloride In diethyl ether; water; ethyl acetate | 2 EXAMPLE 2 Lithium aluminium hydride (0.15 g, 1 mmol) is introduced over 5 minutes into a round-bottomed flask containing anhydrous ether (50 cc) at 0° C. The mixture is stirred for 10 minutes and 3,7,11,15-tetramethyl-2-hexadecenal (0.3 g, 1 mmol) is then added in solution in anhydrous ethyl ether (5 cc). The mixture is stirred for 1 hour at 0° C. and ethyl acetate (3 cc) and water (7 cc) saturated with ammonium chloride are then added. The mixture is stirred for 15 minutes and is then extracted with ethyl ether. The organic phases are dried over magnesium sulphate. After filtering and evaporating off the solvents, 3,7,11,15-tetramethyl-2-hexadecenol (or phytol) is obtained and is characterized by its infrared spectrum and its proton nuclear magnetic resonance spectrum. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With hydrogen In ethanol at 20℃; for 6h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
35% | With boron trifluoride diethyl etherate In 1,4-dioxane; ethyl acetate at 45℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 46% 2: 42% | With bis(benzonitrile)palladium(II) dichloride; tin(II) bromide In N,N-dimethyl-formamide at 50℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With osmium(VIII) oxide; 4-methylmorpholine N-oxide; <i>tert</i>-butyl alcohol In tetrahydrofuran; water at 20℃; for 48h; | ||
With water; dihydrogen peroxide; methyltrioxorhenium(VII) In aq. phosphate buffer at 20℃; for 16h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 1.2 mg 2: 2.4 mg | Stage #1: methanol; sinocalycanchinensin C With sodium methylate at 60℃; for 24h; Stage #2: In methanol | 4.7. Alkaline Hydrolysis of 3 A solution of 3 (6 mg) in 1% NaOMe-MeOH (2 mL) was heated at 60 °C with stirring for 1 day. The reaction mixture was neutralized with ion-exchange resin (Dowex 50WX8), filtered, and concentrated under reduced pressure. The residue was chromatographed over silica gel [n-hexane-acetone (9:1)] to give phytol (1.2 mg) as a colorless oil; inlMMLBox +0.7 (c 0.12, CHCl3); 1H NMR (400 MHz, CDCl3) δ 0.85, 0.86 (each 3H, d, J = 6.6 Hz, Me-18 and Me-19), 0.88 (6H, d, J = 6.5 Hz, Me-16 and Me-17), 1.68 (3H, s, Me-20), 2.00 (2H, br t, J = 6.8 Hz, H2-4), 4.16 (2H, d, J = 7.2 Hz, H2-1), 5.42 (1H, tq, J = 6.8, 1.2 Hz, H-3); 13C NMR (100 MHz, CDCl3) δ 16.2 (C-20), 19.7 (C-19), 19.7 (C-18), 22.6 (C-16), 22.7 (C-17), 24.5 (C-9), 24.8 (C-13), 25.1 (C-5), 28.0 (C-15), 32.7 (C-11), 32.8 (C-7), 36.6 (C-6), 37.3 (C-), 37.4 (C-), 37.4 (C-), 39.4 (C-14), 39.9 (C-4), 59.4 (C-1), 123.1 (C-2), 140.3 (C-3), and sinocalycanchinensin B (2) (2.4 mg). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With formic acid; C28H28Cl2O3PRuS In toluene at 150℃; for 16h; Inert atmosphere; chemoselective reaction; | |
65% | With tricarbonyl(η(4)-cycloocta-1,5-diene)iron In ethanol at 50℃; for 20h; Inert atmosphere; Schlenk technique; Irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 46% 2: 42% | With bis(benzonitrile)palladium(II) dichloride; tin(II) bromide In N,N-dimethyl-formamide at 20℃; for 24h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With triphenylphosphine; diethylazodicarboxylate In tetrahydrofuran; toluene at 0 - 20℃; for 2.1h; Inert atmosphere; | xxiv xxiv) 5-Fluoro-1-((3aR,4R,6R,6aR)-6-(((4-methoxyphenyl)diphenylmethoxy)-2,2-dipropyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-3-((7R,11R)-3,7,11,15-tetramethylhexadec-2-en-1-yl)pyrimidin-2,4(1H,3H)-dione (4a (E+Z)) Compound 3 (1 g; 1.59 mmol) was dissolved in anhydr. THF (10.6 ml). After addition of phytol (0.61 ml; 1.59 mmol) and Ph3P (0.62 g; 2.38 mmol) , the reaction mixture was stirred for 5 min at room temp. under N2 atmosphere and with exclusion of light. Then, the reaction mixture was cooled to 0°C, and a 40% soln. of diethylazodicarboxylate (DEAD) in toluene (0.69 ml; 2.38 mmol) was added dropwise within 1 min. After further 5 min of stirring at 0°C the mixture was allowed to warm up to room temp., and stirring was continued for 2 h. After evaporation of the solvent in high vacuo (45°C) the residue was purified by repeated chromatography on silica gel (1. column: 2 x 25 cm, EtOAc/petrolether, 1:13; 2. column: 2 x 18 cm, EtOAc/petrolether, 15:75, each solvent with 1% of Et3N). Yield 1.1 g (76%) of a colourless foam. Rf (EtOAc/petrol ether, 1:7) 0.55/0.60 (E/Z isomers). UV (MeOH): 270 (9,000). 1H-NMR ((D6)DMSO): 8.16 (d, 3J( H-C(6)cis, F) = 6.5, H-C(6)cis)); 8.25 (d, 3J(H-C(6)trans, F) = 6.5, H-C(6)trans)); 7.38 - 7.21 (m, 12H, 2 x H-C(3"), 4 x H-C(8"), 4 x H-C(9"), 2 x H-C(10")); 6.84 (d, 2H, 3J(H-C(4"), H-C(3")) = 9.0, 2 x H-C(4")); 5.84 (s, H-C(1')); 4.99 - 4.97 (m, 2H, H-C(2'), H-C(2"')); 4.67 - 4.63 (m, H-C(3'); 4.36 (d, 3J(H-C(1"')cis, H-C(2"')) = 5.0, H-C(1'")cis); 4.33 (d, 3J(H-C(1"')trans, H-C(2"')) = 5.0, H-C(1"')trans); 4.21 - 4.18 (m, H-C(4')); 3.72 (s, 3H, H3-C(6")); 3.35 - 3.32 (m, Hα-C(5')); 3.15 - 3.09 (m, Hβ-C(5')); 2.07 (t, 2H, 3J(H-C(4"')cis, H-C(5"')) = 7.5, H-C(4"')cis); 1.87 (t, 2H, 3J(H-C(4"')trans, H-C(5"')) = 7.5, H-C(4"')trans); 1.67 (s, 3H, H3C(20"')); 1.66 - 1.63 (m, 2H, H2-C(α')); 1.51 - 1.43 (m, 3H, H2-C(α), H-C(15"')); 1.42 - 1.30 (m, 6H, H2-C(β'), H2-C(5"'), H-C(7"'), H-C(11")); 1.28 - 0.98 (m, 16H, H2-C(β), H2-C(6"'), H2-C(8"'), H2-C(9"'), H2-C(10"'), H2-C(12"'), H2-C(13"'), H2-C(14"')); 0.91 (t, 3H, 2J((Ha-C(γ'), Hb-C(γ')), ((Ha-C(γ'), Hc-C(γ'))) = -7.0, H3-C(γ')); 0.84 (t, 3H, 2J((Ha-C(γ), Hb-C(γ)), ((Ha-C(γ), Hc-C(γ))) = -7.0, H3-C(γ)).0.83 - 0.78 (m, 12H, H3-C(16"'), H3-C(17"'), H3-C(18"'), H3-C(19"')). 13C-NMR ((D6)DMSO): 158.15 (C(5")); 156.09 (d, 2J(C(4), F) = -25.78, C(4); 148.60 (d, 4J(C(2), F) = 6.28, C(2)); 144.03 (C(7")); 139.35 (d, 1J(C(5), F) = 229.76, C(5)); 139.84 (s, C(3"')cis; 139.56 (s, C(3"')trans); 134.67 (C(2")); 129.86 - 126.74 (m, C(3"), C(8"), C(9"), C(10")); 125.55 (d, 2J(C(6), F) = -32.82, C(6)); 117.83 (C(2"')); 116.71 (C(Ketal)); 113.05 (C(4")); 93.22 (C(4')); 86.33 (C(1")); 85.95 (C(1')); 83.74 (C(2')); 80.82 (C(3')); 64.13 (C(5')); 54.88 (C(6")); 39.00 (C(1"')); 38.66 (C(α')); 38.54 (C(α)); 36.65-36.51(m, C(6"'), C(8"'), C(10"'), C(12"')); 35.81, 35.70 (2s, C(7"'), C(11'")); 27.25 (C(15"')); 24.27 (C(5"')); 24.01 (C(9"')); 23.62 (C(13"')); 22.41, 22.32 (2s, C(16"'), C(17"')); 19.48, 19.43 (2s, C(18"'), C(19"')); 16.88 (C(β')); 16.27 (C(β)); 15.85 (C(20"')); 14.05 (C(γ')); 14.02 (C(γ)). Anal. calc for C56H77FN2O7 (909.218): C, 73.98; H, 8.54; N, 3.08. Found : C, 73.75; H, 8.57; N, 2.73. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With iodine In chloroform for 4h; Reflux; | 4.2.2 General procedure for the synthesis of chromans General procedure: In a 50 mL round bottom flask, prenyl alcohol (1.16 mmol) was mixed with chloroform (10 mL). To it, substituted phenol (4.0 equiv) and iodine (0.3 equiv) were added at room temperature. This reaction mixture was subjected to reflux with stirring for 4 h. It was then cooled to room temperature. Chloroform was directly washed with saturated solution of sodium thiosulphate followed by dilute sodium hydroxide solution. Finally chloroform layer was washed with water, dried over sodium sulfate and concentrated to furnish the crude product. This was then purified using 60-120 mesh silica gel column chromatography (hexanes/ethyl acetate) to give chroman. |
76% | With iodine In chloroform for 4h; Reflux; | 4.3.2.13. 3-Methyl-3-(4,8,12-trimethyltridecyl)-2,3-dihydro-1H-benzo[f]chromene (5l). A mixture of phytol (1.16 mmol), β-naphthol (4.65 mmol) and iodine (0.35 mmol) in chloroform (10 mL) was subjected to reflux with stirring for 4 h. It was then cooled to room temperature. Chloroform was directly washed with saturated solution of sodium thiosulphate followed by dilute sodium hydroxide solution. Finally chloroform layer was washed with water, dried over sodium sulfate and concentrated to furnish the crude product. This was then purified using 60-120 mesh silica gel column chromatography (hexanes/ethyl acetate, 9.8:0.2) to give 3-methyl-3-(4,8,12-trimethyltridecyl)-2,3-dihydro-1H-benzo[f]chromene (5l) (108.7 mg, 76%) as a pale yellow oil; Rf (hexanes/ethyl acetate, 9.5:0.5) 0.50; IR (neat):nmax2951, 1625, 1598, 1234 cm1; 1H NMR (CDCl3, 400 MHz):d 0.80e0.87 (m, 12H), 1.10e1.15 (m, 7H), 1.24e1.67 (m, 14H), 1.32 (s,3H), 1.89e1.99 (m, 2H), 2.99 (t, J6.8 Hz, 2H), 7.03 (d, J8.8 Hz, 1H),7.31 (t, J7.6 Hz,1H), 7.47 (t, J7.6 Hz,1H), 7.60 (d, J8.8 Hz,1H), 7.74(d, J8.0 Hz, 1H), 7.81 (d, J8.4 Hz, 1H); 13C NMR (CDCl3, 100 MHz):d 19.1 (CH2), 19.7e19.8 (3 peak tops, CH3), 21.2 (CH2), 22.7e22.8 (2peak tops, CH3), 23.9 (CH3), 24.5 (CH2), 24.8e24.9 (2 peak tops, CH2),28.0 (CH), 30.8e30.9 (2 peak tops, CH2), 32.7e32.8 (4 peak tops, CH),37.3e37.6 (6 peak tops, CH2), 39.4e39.6 (3 peak tops, CH2), 76.1 (Cq),112.6 (Cq), 119.9 (CH), 121.9 (CH), 122.9 (CH), 126.2 (CH), 127.7 (CH),128.4 (CH),128.7 (Cq),133.1 (Cq),151.4 (Cq); Anal. Calcd For C30H46O:C, 85.3; H, 10.9%; Found: C, 85.6; H, 11.1%; GCeMS: m/z calcd forC30H46O [M]: 422.68; found: 422.22. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With pyridine; dmap at 30 - 35℃; for 14h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With pyridine; dmap at 30 - 35℃; for 14h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With pyridine; dmap at 30 - 35℃; for 14h; | |
With pyridine; dmap at 30 - 35℃; for 14h; | General procedure for synthesizing phytol (PhY)derivatives 1-10 General procedure: Phytol (592 mg, 2 mmol) was dissolved in dry pyridine, andthe respective acyl/aryl chloride (3 mmol) was added. Afteradding a catalytic amount of 4-dimethylaminopyridine(DMAP), the reaction mixture was stirred at 30-35 °C for14 h. After completion of the reaction, crushed ice wasadded, and the reaction mixture was extracted withchloroform (3 × 25 mL). The combined chloroform extractwas washed with 6% aqueous HCl solution to remove thepyridine. Finally, the combined CHCl3 extract was washedwith distilled water and dried over anhydrous Na2SO4, andthe solvent was removed under vacuum. The resulting crudeproducts were separately purified by column chromatography(silica gel, 60-120 mesh, 24 g, column diameter2 × 30 cm) to afford the respective derivatives, 1-10, in highpurity (>95%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-chloro-succinimide; dimethylsulfide In dichloromethane at 0 - 20℃; | 57 Synthesis of mono-O-(3,7,11,15-tetramethylhexadec-2-enyl)erythritol Example 57 Synthesis of mono-O-(3,7,11,15-tetramethylhexadec-2-enyl)erythritol 0.90 g (6.7 mmol) of N-chlorosuccinimide was suspended in methylene chloride (8 mL). After addition of 0.52 mL (7.1 mmol) of dimethylsulfide at 0° C., the solution was stirred for 20 min. After addition of 1.0 g (3.4 mmol) of phytol, the mixture was stuffed for 1 hour at 0° C., and further stirred for 6 hours at room temperature. After addition of sodium bicarbonate aqueous solution, the reaction mixture was extracted with methylene chloride. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated to obtain 3,7,11,15-tetramethylhexadec-2-ene-1-chloride as a crude product. | |
With N-chloro-succinimide; dimethylsulfide In dichloromethane |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
52% | With toluene-4-sulfonic acid In 1,2-dichloro-ethane for 17h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
37.8% | With boron trifluoride diethyl etherate In diethyl ether at 50℃; for 3h; | 6 Synthesis of 2-Methyl-3-phytyl-1,4-naphthohydroquinone Monopropionate (5a) 2-Methyl- 1 ,4-naphthohydroquinone Monopropionate (4a) (4.1 g) phytol (7.85 g) and BF3"OEt2 (0.78 g) were dissolved in ether (12 g) and heated to 50°C for 3 hrs. Ether was removed by concentrated. MeOH (4 g) was added and extracted with Heptane (20 g). The organic layer was concentrated and purified by column chromatography (Heptan:ethyl acetate system), thereby obtaining 1.7 g the title compound (Yield: 37.8%, HPLC purity: 99.9%). |
37.8% | With boron trifluoride diethyl etherate In diethyl ether at 50℃; for 3h; | 6 Synthesis of 2-methyl-3-phytyl-1,4-naphthohydroquinone monopropionate(5a) 2-Methyl- 1 ,4-naphthohydroquinone Monopropionate (4a) (4.1 g) phytol (7.85 g) and BF3"OEt2 (0.78 g) were dissolved in ether (12 g) and heated to 50°C for 3 hrs. Ether was removed by concentrated. MeOH (4 g) was added and extracted with Heptane (20 g). The organic layer was concentrated and purified by column chromatography (Heptan:ethyl acetate system), thereby obtaining 1.7 g the title compound (Yield: 37.8%, HPLC purity: 99.9%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With acetic acid at 138℃; |