Sulfonylpiperidines as novel, antibacterial inhibitors of Gram-positive thymidylate kinase (TMK)
作者:Gabriel Martínez-Botella、James T. Loch、Oluyinka M. Green、Sameer P. Kawatkar、Nelson B. Olivier、P. Ann Boriack-Sjodin、Thomas A. Keating
DOI:10.1016/j.bmcl.2012.10.128
日期:2013.1
is a potential new antibacterial drug target. Previously, we have described the first potent and selective inhibitors of Gram-positive TMK, leading to in vivo validation of the target. Here, a structure-guided design approach based on the initial series led to the discovery of novel sulfonylpiperidine inhibitors of TMK. Formation of hydrogen bonds with Arg48 in Staphylococcus aureus TMK was key to
胸苷酸激酶(TMK)是细菌中DNA合成的必需酶,可将脱氧胸苷单磷酸(dTMP)磷酸化为脱氧胸苷二磷酸(dTDP),因此是潜在的新型抗菌药物靶标。以前,我们已经描述了第一种有效的和选择性的革兰氏阳性TMK抑制剂,从而可以在体内验证靶标。在此,基于初始系列的结构指导设计方法导致了新型TMK磺酰基哌啶抑制剂的发现。金黄色葡萄球菌TMK中与Arg48形成氢键是获得出色的酶亲和力的关键,这已通过蛋白质晶体学证实。在保留结合构象的情况下,用磺酰胺取代了该系列中的亚甲基接头。日志D的进一步优化 产生了苯酚衍生物11,这是一种有效的TMK抑制剂,与人类TMK同源物相比,它对多种革兰氏阳性细菌表现出优异的MIC,并且具有超过10 5的选择性。