The synthesis and evaluation of 6-alkylidene-2'β-substituted penam sulfones as β-lactamase inhibitors
作者:John D. Buynak、A.Srinivasa Rao、Venkata Ramana Doppalapudi、Greg Adam、Peter J. Petersen、Sirishkumar D. Nidamarthy
DOI:10.1016/s0960-894x(99)00325-x
日期:1999.7
Penicillinsulfones, which structurally incorporate both a 6-position alkylidene substituent and a 2'beta substituent, have been synthesized and evaluated as inhibitors of class C and class A serine beta-lactamases. Incorporation of the 2'beta-substituent generally improves inhibitory activity. Substituents that improve transport across the bacterial cell membrane have also been incorporated.
structure. Forty amide and ester derivatives of 3,4-dihydroxyphenylacetic acid, caffeic acid, ferulic acid and gallic acid were obtained and screened against Sporosarcinia pasteurii urease. The most active compound, namely propargyl ester of 3,4-dihydroxyphenylacetic acid exhibited IC50 = 518 nM andkinact/Ki = 1379 M-1 s-1. Inhibitory activity of this compound was better and toxicity lower than those obtained
基于儿茶酚结构开发了靶向的脲酶共价抑制剂。获得了40种3,4-二羟基苯基乙酸,咖啡酸,阿魏酸和没食子酸的酰胺和酯衍生物,并针对巴氏芽孢杆菌巴氏脲酶进行了筛选。活性最高的化合物,即3,4-二羟基苯基乙酸的炔丙基酯显示IC50 = 518 nM,运动/ Ki = 1379 M-1 s-1。与起始化合物邻苯二酚相比,该化合物的抑制活性更好,毒性更低。分子建模研究揭示了一种结合结构-活性关系的结合方式。