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【结 构 式】

【分子编号】27789

【品名】octahydro-1H-indole-2-carboxylic acid

【CA登记号】

【 分 子 式 】C9H15NO2

【 分 子 量 】169.22364

【元素组成】C 63.88% H 8.93% N 8.28% O 18.91%

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:(VIII)

[U-14C]-Aniline (I) is converted to [U-14C]phenyldiazonium chloride (II), which is condensed in situ with ethyl 2-(ethoxyalyl)propionate (III) to give [U-14C]phenylhydrazone of ethyl pyruvate (IV). Cyclization of (IV) by polyphosphoric acid in xylene affords ethyl [U-14C-phenyl]indole-2-carboxylic acid (V). Catalytic hydrogenation of compound (V) in the presence of platinum gives ethyl [U-14C-cyclohexyl]-(RS)-perhydroindole-2-carboxylic acid (VI), which is saponified to the corresponding acid (VIII). Compound (VI) can also be prepared by reduction of compound (V) with tin and hydrochloric acid to give compound (VII), and hydrogenation of the latter in the presence of palladium. Compound (VIII) is reesterified to the benzyl ester (IX), which is condensed with N-[(S)-1-carbethoxybutyl]-(S)-alanine (X) in the presence of DCC and 1-hydroxy-1-benzotriazole. The resulting compound (X) is separated fom the mixture of isomers by silica gel column chromatography. Hydrogenolysis of the latter compound gives [U-14C-cyclohexyl]perindopril, which is isolated as the tert-bytylamine salt.

1 Pichat, L.; et al.; Syntheses du S-9490-3. J Label Compd Radiopharm 1988, 25, 5, 553.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 12294 Aniline; Phenylamine 62-53-3 C6H7N 详情 详情
(II) 25897 benzenediazonium chloride C6H5ClN2 详情 详情
(III) 27781 diethyl 2-methyl-3-oxosuccinate 5965-53-7 C9H14O5 详情 详情
(IV) 27782 ethyl 2-[(E)-2-phenylhydrazono]propanoate C11H14N2O2 详情 详情
(V) 27783 Indole-2-carboxylic acid ethyl ester; 2-Carbethoxyindole; 1H-indole-2-carboxylic acid ethyl ester 3770-50-1 C11H11NO2 详情 详情
(VI) 27784 ethyl octahydro-1H-indole-2-carboxylate C11H19NO2 详情 详情
(VII) 27785 ethyl 2-indolinecarboxylate C11H13NO2 详情 详情
(VIII) 27789 octahydro-1H-indole-2-carboxylic acid C9H15NO2 详情 详情
(IX) 27790 benzyl octahydro-1H-indole-2-carboxylate C16H21NO2 详情 详情
(X) 27786 (2S)-2-[[(1S)-1-(ethoxycarbonyl)butyl]amino]propionic acid C10H19NO4 详情 详情
(XI) 27787 benzyl (2S,3aS,7aS)-1-((2S)-2-[[(1S)-1-(ethoxycarbonyl)butyl]amino]propanoyl)octahydro-1H-indole-2-carboxylate C26H38N2O5 详情 详情
Extended Information