An efficient method for the transformation of 5-ylidenerhodanines into 2,3,5-trisubstituted-4-thiazolidinones
摘要:
The use of 3-substituted-2-mercaptoacrylic acids, synthesized via hydrolysis of 5-ylidenerhodanines for the preparation of 2,3,5-trisubstituted-4-thiazolidinones via a new variant of the one-pot, three-component reaction has been studied. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] BETA LACTAMASE INHIBITORS<br/>[FR] INHIBITEURS DE LA BÊTA-LACTAMASE
申请人:ISIS INNOVATION
公开号:WO2016051133A1
公开(公告)日:2016-04-07
A compound which is a thienolate of formula (I) or a pharmaceutically acceptable salt thereof: (I) wherein R1, R3, Ring A1, n and Ring A2 are as defined herein, are found to be useful in inhibiting metallo-beta-lactamase and therefore in potentiating the activity of beta lactamase antibiotics. The compound can be used alone or in combination with a rhodanine of formula (II) or a pharmaceutically acceptable salt thereof: (II) wherein R3, Ring A1, n, Ring A2, L and Ring B are as defined herein. Treatment or prevention of bacterial infection in combination with beta-lactam antibiotic agents is also provided.
2-Aklylidene-4-arylidene-1, 3-oxathiolan-5-one (III-1a-m) and 2, 4-diarylidene-1, 3-oxathiolan-5-one (III-2a-i) derivatives were synthesized by treating β-aryl-α-mercaptoacrylic acids (I) with alkanoic acid anhydrides (II) or by treating α-acylthio-β-arylacrylic acids (V) with thionyl chloride in dimethylformamide. Basic hydrolysis and methanolysis of III-1 and III-2 in the presence of lithium hydroxide easily occurred to give the corresponding ring-cleaved products, the carboxylic acid (I and II) and the ester (VII and VIII), respectively. The catalytic hydrogenation of the two olefinic bonds of III-2 in the presence of 10% palladium charcoal proceeded easily without ring cleavage to give 1, 3-oxathiolan-5-one (IXa-e) derivatives. The oxidation of III-1 and III-2 with m-chloroperbenzoic acid afforded the corresponding 1, 3-oxathiolan-5-one S-oxide (Xa, b) derivatives.
A compound which is a thienolate of formula (I) or a pharmaceutically acceptable salt thereof: (I) wherein R1, R3, Ring A1, n and Ring A2 are as defined herein, are found to be useful in inhibiting metallo-beta-lactamase and therefore in potentiating the activity of beta lactamase antibiotics. The compound can be used alone or in combination with a rhodanine of formula (II) or a pharmaceutically acceptable salt thereof: (II) wherein R3, Ring A1, n, Ring A2, L and Ring B are as defined herein. Treatment or prevention of bacterial infection in combination with beta-lactam antibiotic agents is also provided.
式 (I) 的噻吩酸盐或其药学上可接受的盐:(I) 其中 R1、R3、环 A1、n 和环 A2 如本文所定义,该化合物可抑制金属-β-内酰胺酶,从而增强β-内酰胺酶抗生素的活性。该化合物可单独使用,也可与式 (II) 的罗丹宁或其药学上可接受的盐结合使用:(II) 其中 R3、环 A1、n、环 A2、L 和环 B 如本文所定义。还提供了与β-内酰胺类抗生素制剂联合使用治疗或预防细菌感染的方法。
Syntheses of Novel 1,3-Oxathiolan-5-one Derivatives