Synthetic Studies of Carbapenem and Penem Antibiotics. III. A Synthesis of a Key Intermediate for 1.BETA.-Methylcarbapenem.
作者:Akira SASAKI、Haruki MATSUMURA、Tsuneo YANO、Shinji TAKTA、Makoto SUNAGAWA
DOI:10.1248/cpb.40.1098
日期:——
synthesized useful intermediates 5 and 6 for 1 beta- and 1 alpha-methylcarbapenems from 4-carboxy-3-[(R)-1-hydroxyethyl]-2-azetidinone 4 as a starting material by using stereoselective hydrogenation and hydroboration, respectively. A practical synthetic route from 4 to the (3S,4S)-4-[(R)-1-carboxyethyl]-3-[(R)-1-hydroxyethyl]-2-azetidinone derivative 1, a useful intermediate for the synthesis of 1 beta-methylcarbapenem
我们分别使用立体选择性氢化和硼氢化反应,以4-羧基-3-[(R)-1-羟乙基] -2-氮杂环丁酮4为起始原料,合成了用于1个β-和1个α-甲基卡巴南的有用中间体5和6。从4到(3S,4S)-4-[(R)-1-羧乙基] -3-[(R)-1-羟乙基] -2-氮杂环丁酮衍生物1的实用合成路线,这是合成的有用中间体建立了1种β-甲基卡巴培南抗生素。