Phyridonecarboxylic Acids as Antibacterial Agents. Part XX. 7-(2-Aminomethyl-1-azetidinyl)-4-oxoquinoline-3-carboxylic Acids as Potent Antibacterial Agents: Design, Synthesis, and Antibacterial Activity.
作者:Masahiro FUJITA、Katsumi CHIBA、Yukio TOMINAGA、Katsuhiko HINO
DOI:10.1248/cpb.46.787
日期:——
(giving 31a and 32a). Through optical resolution of 1-benzylazetidine-2-carboxamide (19) and chiral synthesis of its R-isomer, both enantiomers of 2-aminomethyl-1-azetidinyl quinolines 12a and 24-26a were also prepared. The most active of all the compounds was 5-amino-6,8-difluoroquinoline (R)-26a. The activity of (R)-26a was more potent than those of the corresponding 1-piperazinyl derivative (3) and sparfloxacin
2-氨基甲基-1-氮杂环丁烷基,-1-吡咯烷基和-1-哌啶基被设计为新型C-7取代基,用于潜在的抗菌喹诺酮类药物。在三个取代基中,发现2-氨基甲基-1-氮杂环丁烷基(化合物12a)最有利于增强6,8-二氟喹啉分子12的活性。因此,2-氨基甲基-1-氮杂环丁烷基为引入各种喹啉(给24-26a和28a)和萘啶(给31a和32a)中。通过1-苄基氮杂环丁烷-2-羧酰胺的光学拆分(19)及其R-异构体的手性合成,还制备了2-氨基甲基-1-氮杂环丁烷基喹啉12a和24-26a的两个对映体。所有化合物中活性最高的是5-氨基-6,8-二氟喹啉(R)-26a。