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【结 构 式】

【分子编号】21181

【品名】(1R)-1-(3-nitrophenyl)propyl methanesulfonate

【CA登记号】

【 分 子 式 】C10H13NO5S

【 分 子 量 】259.28296

【元素组成】C 46.32% H 5.05% N 5.4% O 30.85% S 12.37%

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:(XXVII)

2) The chiral intermediate (X) has been obtained by two different ways: a) The Knovenagel condensation of dimethyl malonate (XVII) with 3-nitrobenzaldehyde (XVIII) gives the corresponding benzylidenemalonate (XIX), which is alkylated with diethyl zinc and CuBr in DMSO yielding 2-[1-(3-nitrophenyl)propyl]malonic acid dimethyl ester (XX). The partial decarboxylation of (XX) with 6N HCl affords racemic 3-(3-nitrophenyl)pentanoic acid (XXI), which is esterified with methanol/HCl to the racemic methyl ester (XXII). Finally, this racemate is resolved by chromatography over a chiral (R,R)Whelk-O1 column giving the desired intermediate (X). b) The regioselective acetylation of 1-(3-nitrophenyl)-1-propanol (XXIII) with isopropenyl acetate (XXIV) catalyzed by Amano P30 lipase gives a mixture of the (S)-acetate (XXV) and unreacted (R)-alcohol (XXVI). After separation, (XXVI) was mesylated with mesyl chloride as usual yielding mesylate (XXVII), which was condensed with the sodium salt of diethyl malonate (XXVIII) affording the chiral malonic ester (XXIX). Partial decarboxylation of (XXIX) with 6N HCl gives the chiral pentanoic acid (XXX), which is finally esterified to the desired intermediate (X) with methanol/HCl.

1 Fors, K.S.; et al.; A convergent, scalable synthesis of HIV protease inhibitor PNU-140690. J Org Chem 1998, 63, 21, 7348.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(X) 21164 methyl (3S)-3-(3-nitrophenyl)pentanoate C12H15NO4 详情 详情
(XVII) 19373 dimethyl malonate;Methyl malonate;Propanedioic acid dimethyl ester 108-59-8 C5H8O4 详情 详情
(XVIII) 12646 3-Nitrobenzaldehyde 99-61-6 C7H5NO3 详情 详情
(XIX) 21173 dimethyl 2-(3-nitrobenzylidene)malonate C12H11NO6 详情 详情
(XX) 21174 dimethyl 2-[1-(3-nitrophenyl)propyl]malonate C14H17NO6 详情 详情
(XXI) 21175 3-(3-nitrophenyl)pentanoic acid C11H13NO4 详情 详情
(XXII) 21176 methyl 3-(3-nitrophenyl)pentanoate C12H15NO4 详情 详情
(XXIII) 21177 1-(3-nitrophenyl)-1-propanol C9H11NO3 详情 详情
(XXIV) 21178 isopropenyl acetate 108-22-5 C5H8O2 详情 详情
(XXV) 21179 (1S)-1-(3-nitrophenyl)propyl acetate C11H13NO4 详情 详情
(XXVI) 21180 (1R)-1-(3-nitrophenyl)-1-propanol C9H11NO3 详情 详情
(XXVII) 21181 (1R)-1-(3-nitrophenyl)propyl methanesulfonate C10H13NO5S 详情 详情
(XXVIII) 21182 Diethyl malonate sodium salt C7H11NaO4 详情 详情
(XXIX) 21183 diethyl 2-[(1S)-1-(3-nitrophenyl)propyl]malonate C16H21NO6 详情 详情
(XXX) 21184 (3S)-3-(3-nitrophenyl)pentanoic acid C11H13NO4 详情 详情
Extended Information