Synthesis of novel di- and tricationic carbapenems with potent anti-MRSA activity
作者:Takahisa Maruyama、Yasuo Yamamoto、Yuko Kano、Mizuyo Kurazono、Eiki Shitara、Katsuyoshi Iwamatsu、Kunio Atsumi
DOI:10.1016/j.bmcl.2008.11.039
日期:2009.1
A new series of 1 beta-methyl carbapenems possessing a 6,7-disubstituted imidazo[5,1-b]thiazol-2-yl group directly attached to the C-2 position of the carbapenem nucleus was prepared, and their activities against methicillin-resistant Staphylococcus aureus (MRSA) were evaluated. First, a benzyl moiety was introduced at the C-6 position of imidazo[5,1-b]thiazole attached to the carbapenem. These benzylated molecules showed potent anti-MRSA activity, but poor water solubility. In order to overcome this drawback, we designed and synthesized di- and tricationic carbapenems and finally discovered a novel carbapenem (15i), which exhibited excellent anti-MRSA activity and good water solubility. (C) 2008 Elsevier Ltd. All rights reserved.