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【结 构 式】

【分子编号】38571

【品名】(2S,4S)-1-(tert-butoxycarbonyl)-4-phenyl-2-pyrrolidinecarboxylic acid

【CA登记号】

【 分 子 式 】C16H21NO4

【 分 子 量 】291.34708

【元素组成】C 65.96% H 7.27% N 4.81% O 21.97%

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:(XVIII)

The protection of the NH group of trans-4-hydroxy-L-proline (XII) with tert-butoxycarbonyl anhydride and NaOH in tert-butanol/water gives the N-protected proline (XIII), which is esterified with benzyl alcohol and triethylamine to the benzyl ester (XIV). The tosylation of (XIV) with tosyl chloride and pyridine affords the tosylate (XV), which is debenzylated with H2 over Pd/C yielding the tosylated proline (XVI). The arylation of (XVI) with phenyllithium (XVII) and CuBr in ether/THF affords 1-(tert-butoxycarbonyl)-4(S)-phenyl)-L-proline (XVIII), which is deprotected with TFA in chloroform giving 4(S)-phenyl-L-proline (XIX). Finally, this compound is reduced with H2 over PtO2 in ethanol providing the desired intermediate trans-4-cyclohexyl-L-proline (XI).

1 Moniot, J.L.; Thottathil, J.K.; Littium diphenylcuprate reactions with 4-tosyloxy-L-prolines; An interesting stereochemical outcome. A synthesis of trans-4-phenyl-L-proline. Tetrahedron Lett 1986, 27, 2, 151.
2 Floyd, D.; Thottathil, J.K.; Brandt, S.; Moniot, J.L. (Bristol-Myers Squibb Co.); Method for making substd. prolines. DE 3434121; US 4501901 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
12912 1-(Bromomethyl)benzene; Alpha-bromotoluene 100-39-0 C7H7Br 详情 详情
(XI) 38567 (2S,4S)-4-cyclohexyl-2-pyrrolidinecarboxylic acid C11H19NO2 详情 详情
(XII) 14489 (2S,4R)-4-hydroxytetrahydro-1H-pyrrole-2-carboxylic acid; L-Hydroxyproline 51-35-4 C5H9NO3 详情 详情
(XIII) 16094 (2S,4R)-1-(tert-butoxycarbonyl)-4-hydroxypyrrolidine-2-carboxylic acid;1-(tert-butoxycarbonyl)-4®-hydroxy-L-proline;(2S,4R)-1-(tert-butoxycarbonyl)-4-hydroxytetrahydro-1H-pyrrole-2-carboxylic acid 16094 C10H17NO5 详情 详情
(XIV) 38568 2-benzyl 1-(tert-butyl) (2S,4R)-4-hydroxy-1,2-pyrrolidinedicarboxylate C17H23NO5 详情 详情
(XV) 38569 2-benzyl 1-(tert-butyl) (2S,4R)-4-[[(4-methylphenyl)sulfonyl]oxy]-1,2-pyrrolidinedicarboxylate C24H29NO7S 详情 详情
(XVI) 38570 (2S,4R)-1-(tert-butoxycarbonyl)-4-[[(4-methylphenyl)sulfonyl]oxy]-2-pyrrolidinecarboxylic acid C17H23NO7S 详情 详情
(XVII) 24014 Phenyllithium 591-51-5 C6H5Li 详情 详情
(XVIII) 38571 (2S,4S)-1-(tert-butoxycarbonyl)-4-phenyl-2-pyrrolidinecarboxylic acid C16H21NO4 详情 详情
(XIX) 38572 (2S,4S)-4-phenyl-2-pyrrolidinecarboxylic acid C11H13NO2 详情 详情
Extended Information