SYNTHETIC STUDIES OF CARBAPENEM AND PENEM ANTIBIOTICS .1. FACILE SYNTHESIS OF A KEY INTERMEDIATE - 4-ACETOXY-3-(1-HYDROXYETHYL)-2-AZETIDINONE

被引:0
|
作者
SUNAGAWA, M [1 ]
MATSUMURA, H [1 ]
ENOMOTO, M [1 ]
INOUE, T [1 ]
SASAKI, A [1 ]
机构
[1] SUMITOMO PHARMACEUT CO LTD, RES LABS, 3-1-98 KASUGADE NAKA, KONOHANA KU, OSAKA 554, JAPAN
关键词
PENEM; CARBAPENEM; (R)-1-HYDROXYETHYL GROUP; (3R; 4R)-4-ACETOXY-3-[(R)-1-HYDROXYETHYL]-2-AZETIDINONE; (2+2) CYCLOADDITION; OXYMERCURATION-REDUCTION; OXIDATIVE DECARBOXYLATION;
D O I
暂无
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
A highly efficient synthesis of (3R,4R)4-acetoxy-3-[(R)-1-hydroxyethyl]-2-azetidinone, which is a key intermediate for the synthesis of carbapenem and penem antibiotics, was accomplished. It was found that oxymercuration-reduction of easily obtainable 4-alkyloxycarbonyl-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone could be employed as a key stereoselective reaction. The chiral starting material was obtained by optical resolution or asymmetric (2 + 2) cycloaddition. The desired product was afforded in four steps, that is, oxymercuration-reduction, oxidative decarboxylation, protection of the hydroxy group and removal of the N-protecting group.
引用
收藏
页码:1931 / 1938
页数:8
相关论文
共 50 条