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【结 构 式】

【分子编号】51206

【品名】(1R,2S)-2-phenylcyclohexyl acetate

【CA登记号】

【 分 子 式 】C14H18O2

【 分 子 量 】218.29572

【元素组成】C 77.03% H 8.31% O 14.66%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(rac)-(III)

Ring opening of cyclohexene oxide (I) with phenylmagnesium bromide in the presence of CuI, followed by acetylation of the resulting alcohol (II) gave the racemic trans-2-phenylcyclohexyl acetate (III). Enzymatic resolution of (III) using porcine liver acetone powder yielded the desired (-)-alcohol (II) along with unreacted (+)-acetate (III). Condensation of the sodium alkoxide of benzyl alcohol with bromoacetic acid (IV) afforded benzyloxyacetic acid (V), which was then coupled with the chiral alcohol (-)-(II) to give ester (VI). Hydrogenolysis of the O-benzyl group of (VI), followed by silylation of the resulting hydroxyacetate ester (VII) with triisopropylsilyl chloride, furnished (VIII). Imine (XI) was prepared by condensation of 3-methyl-2-butenal (IX) with p-anisidine (X). The asymmetric cyclocondensation reaction of the lithium enolate derived from ester (VIII) with imine (XI) yielded the chiral beta-lactam (XII). Oxidative removal of the p-methoxyphenyl protecting group of (XII) and then reprotection of the lactam N atom with Boc2O furnished the intermediate N-Boc lactam (XIII).

1 Strum, M.; Tynebor, R.; Pera, P.; Bernacki, R.J.; Ojima, I.; Synthesis and SAR of advanced second generation taxoids. 221st ACS Natl Meet (April 1 2001, San Diego) 2001, Abst MEDI 132.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(rac)-(III) 51206 (1R,2S)-2-phenylcyclohexyl acetate C14H18O2 详情 详情
(rac)-(II) 51208 (1R,2S)-2-phenylcyclohexanol C12H16O 详情 详情
(-)-(II) 51209 (-)-(1R,2S)-2-phenylcyclohexanol C12H16O 详情 详情
(+)-(III) 51210 (1S,2R)-2-phenylcyclohexyl acetate C14H18O2 详情 详情
(I) 17986 7-oxabicyclo[4.1.0]heptane; cyclohexene oxide 286-20-4 C6H10O 详情 详情
(IV) 23660 2-Bromoacetic acid 79-08-3 C2H3BrO2 详情 详情
(V) 51207 2-(benzyloxy)acetic acid C9H10O3 详情 详情
(VI) 51211 (1R,2S)-2-phenylcyclohexyl 2-(benzyloxy)acetate C21H24O3 详情 详情
(VII) 51212 (1R,2S)-2-phenylcyclohexyl 2-hydroxyacetate C14H18O3 详情 详情
(VIII) 19151 (1R,2S)-2-phenylcyclohexyl 2-[(triisopropylsilyl)oxy]acetate C23H38O3Si 详情 详情
(IX) 19152 3-methyl-2-butenal 107-86-8 C5H8O 详情 详情
(X) 10478 p-Anisidine; 4-Methoxyaniline; 4-Methoxyphenylamine 104-94-9 C7H9NO 详情 详情
(XI) 19154 4-methoxy-N-[(E)-3-methyl-2-butenylidene]aniline; N-(4-methoxyphenyl)-N-[(E)-3-methyl-2-butenylidene]amine C12H15NO 详情 详情
(XII) 19155 (3R,4S)-1-(4-methoxyphenyl)-4-(2-methyl-1-propenyl)-3-[(triisopropylsilyl)oxy]-2-azetidinone C23H37NO3Si 详情 详情
(XIII) 19157 tert-butyl (2S,3R)-2-(2-methyl-1-propenyl)-4-oxo-3-[(triisopropylsilyl)oxy]-1-azetidinecarboxylate C21H39NO4Si 详情 详情
Extended Information