Potent inhibition of serine proteases by heterocyclic sulfide derivatives of 1,2,5-thiadiazolidin-3-one 1,1 dioxide
作者:Shu He、Rongze Kuang、Radhika Venkataraman、Juan Tu、Tien M Truong、Ho-Kit Chan、William C Groutas
DOI:10.1016/s0968-0896(00)00101-2
日期:2000.7
elements that can potentially interact with the Sn' subsites of these proteases might provide an effective means for optimizing enzyme potency and selectivity. Accordingly, a series of heterocyclic sulfide derivatives based on the 1,2,5-thiadiazolidin-3-one 1,1 dioxide scaffold (I) was synthesized and the inhibitory activity and selectivity of these compounds toward human leukocyte elastase (HLE), proteinase
在紧密相关的(胰凝乳蛋白酶)胰蛋白酶样丝氨酸蛋白酶的Sn'位点存在细微差异,并且1,2,5-噻二唑烷-3--1,1,1二氧化sc支架停靠在活性位点上(chymo)胰蛋白酶样酶以底物样方式,提示引入可能与这些蛋白酶的Sn'亚位点潜在相互作用的识别元件可能为优化酶效价和选择性提供了有效手段。因此,合成了一系列基于1,2,5-噻二唑啉-3--1,1二氧化物支架(I)的杂环硫化物衍生物,这些化合物对人白细胞弹性蛋白酶(HLE),蛋白酶的抑制活性和选择性然后确定3(PR 3)和组织蛋白酶G(Cat G)。发现P1 =异丁基的化合物有效,HLE的时间依赖性抑制剂,程度较小的PR 3,而P1 =苄基的抑制剂会迅速且不可逆地使Cat G失活。这项研究表明,1,2,5-噻二唑烷-3-一,1,1二氧化硫基杂环硫化物是(chymo)胰蛋白酶样丝氨酸蛋白酶的有效抑制剂。