as well as glutathione-containing water, and their instability was closely related to their HCV inhibitory activity. A preliminary study of the mechanism of action showed that the sulfonamide bond at the 9-position of purine would be the primary degradation site and the resulting sulfonylation degradation species would mediate the anti-HCV activity of 9-sulfonyl-9(H)-purines. Results of this study demonstrated
基于细胞的特权小分子文库筛选导致发现9-磺酰基-9(H
嘌呤作为丙型肝炎病毒(HCV)
抑制剂的新支架。关于
嘌呤核中2、6和9位的结构活性关系研究,鉴定出了几种对HCV
基因型1b具有中等效力的活性化合物。随后的稳定性研究表明,这种类型的HCV
抑制剂在Dulbecco改良的Eagle
培养基(
DMEM)和血浆以及含
谷胱甘肽的
水中不稳定,并且其不稳定性与其HCV抑制活性密切相关。作用机理的初步研究表明,
嘌呤9位上的磺酰胺键是主要的降解位点,所产生的磺酰化降解物种将介导9-磺酰基-9(H)-
嘌呤。这项研究的结果表明9-磺酰基-9(H)-
嘌呤是HCV
抑制剂的不稳定支架,因此需要进一步详细分析降解物质,以确定此类分子的主要活性成分和直接靶标。