作者:Takeshi Yamada、Miu Yagita、Yutaka Kobayashi、Goh Sennari、Hiroyuki Shimamura、Hidehito Matsui、Yuki Horimatsu、Hideaki Hanaki、Tomoyasu Hirose、Satoshi O̅mura、Toshiaki Sunazuka
DOI:10.1021/acs.joc.8b00045
日期:2018.7.6
Total synthesis of bottromycin A2 can be accomplished through a diastereoselective Mannich reaction of a chiral sulfinamide, mercury-mediated intermolecular amidination, and cyclization of a constrained tetracyclic peptide. Exploitation of this process allowed the synthesis of several novel bottromycin analogs. The antimicrobial activity of these analogs was evaluated in vitro against Gram-positive
可以通过手性亚磺酰胺的非对映选择性曼尼希反应,汞介导的分子间酰胺化和受约束的四环肽的环化来完成肉毒霉素A 2的全合成。利用该方法可以合成几种新颖的肉毒霉素类似物。在体外评估了这些类似物对革兰氏阳性细菌(如耐甲氧西林的金黄色葡萄球菌(MRSA)和耐万古霉素的肠球菌)的抗菌活性(VRE)。考虑到化合物独特的三维结构,探讨了结构与活性之间的关系。值得注意的是,一种没有甲酯的新的类似物,其已知会降低肉毒杆菌素的体内功效,表现出与万古霉素相当的抗菌生物活性。