Thienopyridone Antibacterials V [1]. Synthesis of Some N(7)-Azacyclohexyl-4-oxothieno[2,3-b]pyridine-5-carboxylic Acids and Related Congeners
作者:Hala I. Al-Jaber、Mustafa M. El-Abadelah、Salim S. Sabri、Taleb H. Al-Tel、Wolfgang Voelter
DOI:10.1515/znb-2009-11-1249
日期:2009.12.1
A series of N(7)-azacyclohexyl-4-oxo-4,7-dihydrothieno[2,3-b]-pyridine-5-carboxylic acids 9a - c, related congeners 9d - g and their methyl esters 8a - g were prepared by cyclization of the respective 2-[(2,5-dichlorothien-3-yl)carbonyl]-3-[(N(7)-azacyclyl/acyclic)amino]acrylates 7a - g. The latter intermediates are accessible from methyl 2-[(2,5-dichlorothien-3-yl)carbonyl]-3-ethoxyacrylate (6). Of
一系列 N(7)-azacyclohexyl-4-oxo-4,7-dihydrothieno[2,3-b]-pyridine-5-羧酸 9a - c、相关的同源物 9d - g 和它们的甲酯 8a - g 是通过环化相应的2-[(2,5-二氯噻吩-3-基)羰基]-3-[(N(7)-氮杂环基/无环)氨基]丙烯酸酯7a-g制备。后一种中间体可从 2-[(2,5-二氯噻吩-3-基)羰基]-3-乙氧基丙烯酸甲酯 (6) 获得。在本系列中,7-(N,N-二甲氨基) 衍生物 9d 表现出良好的活性,尤其是对肺炎克雷伯菌和副伤寒沙门氏菌 A(MIC 分别为 0.5 和 1.0 μgmL-1)。图形摘要噻吩并吡啶酮抗菌剂 V [1]。一些 N(7)-Azacyclohexyl-4-oxothieno[2,3-b]pyridine-5- 羧酸和相关同系物的合成