• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】56632

【品名】allyl (1R,2S)-2-(aminocarbonyl)-4-methylenecyclopentanecarboxylate

【CA登记号】

【 分 子 式 】C11H15NO3

【 分 子 量 】209.24504

【元素组成】C 63.14% H 7.23% N 6.69% O 22.94%

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:(XIII)

Hydrolysis of diester (I) with KOH in water/EtOH at 55 C gives the dicarboxylic acid (II), which is subjected to cyclization by refluxing with propionic anhydride to provide anhydride (III). Cyclic anhydride (III) is opened with allyl alcohol (XI) in diethyl ether in the presence of (­)-quinine as asymmetric inducer to yield (­)-1,2-cis-4-methylenecyclopentane-1,2-dicarboxylic acid monoallyl ester (­)-(XII), which is then converted into the amide derivative (­)-(XIII) by activation of the carboxylic acid group with isobutyl chloroformate in ethyl acetate in the presence of N-ethylmorpholine at ­6 C, followed by reaction with aqueous ammonia. Removal of the allyl group of (­)-(XIII) with triphenylphosphine, tetrakis(triphenylphosphine)palladium and 2-ethylhexanoic acid sodium salt in ethyl acetate affords (­)-1,2-cis-2-(aminocarbonyl)-4-methylenecyclopentane-1-carboxylic acid sodium salt (­)-(XIV). Compound (­)-(XIV) is subjected to a Hofmann rearrangement with KOH and KOCl in water to provide a crude aqueous solution containing PLD-118, which is finally purified by protection of the free amine group with N-(9-fluorenylmethoxycarbonyloxy)succinimide by means of Na2CO3 in dioxane followed by Fmoc removal with piperidine in diethyl ether.

1 Sorbera, L.A.; Castañer, J.; Bozzo, J.; PLD-118. Drugs Fut 2002, 27, 11, 1049.
2 Fey, P.; Mohrs, K.-H.; Matzke, M.; Mittendorf, J.; Militzer, H.-C.; Arold, H. (Bayer AG); High enantio-selective process for producing pure enantiomeric cyclopentane and cyclopentene-(beta)-amino acids. DE 4400749; US 5962724; WO 9519337 .
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) 27275 diethyl (1R,2S)-4-methylene-1,2-cyclopentanedicarboxylate C12H18O4 详情 详情
(II) 27276 (1R,2S)-4-methylene-1,2-cyclopentanedicarboxylic acid C8H10O4 详情 详情
(III) 56629 (3aR,6aS)-5-methylenetetrahydro-1H-cyclopenta[c]furan-1,3(3aH)-dione C8H8O3 详情 详情
(XI) 12234 2-Propen-1-ol; Allyl alcohol 107-18-6 C3H6O 详情 详情
(XII) 56631 (1S,2R)-2-[(allyloxy)carbonyl]-4-methylenecyclopentanecarboxylic acid C11H14O4 详情 详情
(XIII) 56632 allyl (1R,2S)-2-(aminocarbonyl)-4-methylenecyclopentanecarboxylate C11H15NO3 详情 详情
(XIV) 56633 sodium (1R,2S)-2-(aminocarbonyl)-4-methylenecyclopentanecarboxylate C8H10NNaO3 详情 详情
Extended Information