Azolylthioacetamides as a potent scaffold for the development of metallo-β-lactamase inhibitors
摘要:
In an effort to develop new inhibitors of metallo-beta-lactamases (MbLs), twenty-eight azolylthioacetamides were synthesized and assayed against MbLs. The obtained benzimidazolyl and benzioxazolyl substituted 1-19 specifically inhibited the enzyme ImiS, and 10 was found to be the most potent inhibitor of ImiS with an IC50 value of 15 nM. The nitrobenzimidazolyl substituted 20-28 specifically inhibited NDM-1, with 27 being the most potent inhibitor with an IC50 value of 170 nM. Further studies with 10, 11, and 27 revealed a mixed inhibition mode with competitive and uncompetitive inhibition constants in a similar range as the IC50 values. These inhibitors resulted in a 2-4-fold decrease in imipenem MIC values using E. coli cells producing ImiS or NDM-1. While the source of uncompetitive (possibly allosteric) inhibition remains unclear, docking studies indicate that 10 and 11 may interact orthosterically with Zn2 in the active site of CphA, while 27 could bridge the two Zn(II) ions in the active site of NDM-1 via its nitro group. (C) 2017 Elsevier Ltd. All rights reserved.
An Efficient and Convenient Synthesis of 2-Thio[1,2,4]triazolo[1,5-c]quinazoline and its Derivatives
作者:Alexandr V. Karpenko、Sergey I. Kovalenko、Svetlana V. Shishkina、Oleg V. Shishkin
DOI:10.1007/s00706-006-0545-6
日期:2006.12
reaction. The title compound 2-thio[1,2,4]triazolo[1,5- c ]quinazoline was obtained after treatment of 4-hydrazinoquinazoline with potassium ethylxanthogenate via a facile in situ Dimroth -like rearrangement of the expected [4,3- c ] system. Its structure was established by X-ray diffraction study and confirmed by an independent synthesis, starting from o -aminobenzonitrile.
将带有二硫化碳的4-羟基喹唑啉进行再循环反应。 通过乙基黄原酸钾通过 预期的[4,3-]的原位 Dimroth 样重排 用乙基黄原酸钾处理4-肼基喹唑啉后,获得标题化合物2-硫代[1,2,4]三唑并[1,5- c ]喹唑啉。 c ]系统。它的结构是通过X射线衍射研究确定的,并通过独立合成确认,从 邻 氨基苯甲腈开始 。
Reaction of carbon disulfide with 4-hydrazinoquinazoline
作者:Gary M. Coppola、Goetz E. Hardtmann
DOI:10.1021/jo00930a050
日期:1974.8
Gegen Thermolyse stabilisierte Formmassen mit geringem Monomerengehalt