环丙沙星是一种广谱抗生素,被公认为世界卫生组织的基本药物之一。它在治疗与泌尿,呼吸道和胃肠道感染有关的革兰氏阴性细菌感染方面特别有效。已开发出一种精简且高产率的环丙沙星连续合成方法,该方法采用化学选择性的C-酰化步骤,因此无需进行中间分离,提取或纯化。端到端过程的停留时间为4.7分钟,在实验室规模下的吞吐率为15.8 g / h,总的分离产率为83%。
The present invention relates to a 1,8-naphthyridine derivative of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and each hydrogen or lower alkyl having 1 to 5 carbon atoms; and esters thereof and salts thereof and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful antibacterial agents.
Synthesis of 4<i>H</i>-1,4-benzothiazine 1-oxide and 1,1-dioxide. Analogs of quinolone antibacterial agents
作者:Townley P. Culbertson
DOI:10.1002/jhet.5570280709
日期:1991.11
4-Cyclopropyl-5,7-difluoro-6-(4-methyl-1-piperazinyl)-4H-1,4-benzothiazine-2-carboxylic acid 1-oxide (2c) and 4-cyclopropyl-5,7-difluoro-6-(4-methyl-1-piperazinyl)-4H-1,4-benzothiazine-2-carboxylic acid 1,1-dioxide (2d) were prepared and assayed for antibacterial activity and inhibition of DNA gyrase.
4-环丙基-5,7-二氟-6-(4-甲基-1-哌嗪基)-4 H -1,4-苯并噻嗪-2-羧酸1-氧化物(2c)和4-环丙基-5,7-制备了二氟-6-(4-甲基-1-哌嗪基)-4 H -1,4-苯并噻嗪-2-羧酸1,1-二氧化物(2d),并测定了其抗菌活性和对DNA促旋酶的抑制作用。
A Consolidated and Continuous Synthesis of Ciprofloxacin from a Vinylogous Cyclopropyl Amide
作者:N. Perrer Tosso、Bimbisar K. Desai、Eliseu De Oliveira、Juekun Wen、John Tomlin、B. Frank Gupton
DOI:10.1021/acs.joc.8b03222
日期:2019.3.15
particularly effective in the treatment of Gram-negative bacterial infections associated with urinary, respiratory, and gastrointestinal tract infections. A streamlined and high yielding continuous synthesis of ciprofloxacin has been developed, which employs a chemoselective C-acylation step that precludes the need for intermediate isolations, extractions, or purifications. The end-to-end process has
环丙沙星是一种广谱抗生素,被公认为世界卫生组织的基本药物之一。它在治疗与泌尿,呼吸道和胃肠道感染有关的革兰氏阴性细菌感染方面特别有效。已开发出一种精简且高产率的环丙沙星连续合成方法,该方法采用化学选择性的C-酰化步骤,因此无需进行中间分离,提取或纯化。端到端过程的停留时间为4.7分钟,在实验室规模下的吞吐率为15.8 g / h,总的分离产率为83%。