Practical Synthesis of a 1.BETA.-Methylcarbapenem, J-111,225, Using 4-Mercapto-2-[4-(N-methylaminomethyl)phenyl] pyrrolidine as a Precursor.
作者:Hideaki IMAMURA、Aya SHIMIZU、Hiroki SATO、Yuichi SUGIMOTO、Shunji SAKURABA、Koji YAMADA、Hajime MORISHIMA
DOI:10.1248/cpb.49.476
日期:——
An effective and practical procedure for the synthesis of J-111, 225 (1), a new 1β-methylcarbapenem, was developed using 4-mercapto-2-[4-(N-methylaminomethyl)phenyl]pyrrolidine (2a) as a precursor. The coupling reaction of 2a with p-nitrobenzyl (PNB)-protected 1β-methylcarbapenem enolphosphate 3a and successive removal of PNB group afforded J-111, 225 (1) in significantly increased yield compared to the ordinary procedure using a C-2 side-chain thiol with amino-protective groups.
成功开发了一种高效且实用的J-111、225 (1)合成方法,这是一种新的1β-甲基碳青霉烯。该方法以4-巯基-2-[4-(N-甲基氨基甲基)苯基]吡咯烷 (2a)为前体,通过2a与对硝基苄基 (PNB)保护的1β-甲基碳青霉烯烯醇磷酸酯3a的耦合反应,并随后移除PNB基团,与使用带有氨基保护基团的C-2侧链硫醇的常规方法相比,显著提高了J-111、225 (1)的产率。