α-Substituted norstatines as the transition-state mimic in inhibitors of multiple digestive vacuole malaria aspartic proteases
作者:Kristina M. Orrling、Melissa R. Marzahn、Hugo Gutiérrez-de-Terán、Johan Åqvist、Ben M. Dunn、Mats Larhed
DOI:10.1016/j.bmc.2009.06.065
日期:2009.8
compounds provided Ki values in the nanomolar range for all PM4, with a best value of 110 nM in PM4 from Plasmodium ovale. In addition, excellent selectivity over the closely related human aspartic protease Cathepsin D was achieved. The loss of affinity to Plasmodium falciparum PM4, which was experienced upon the move of the P1 substituent, was rationalized by the calculation of inhibitor–protein binding
研究了含降nor素的纤溶酶抑制剂中P1侧链从β位置移动到α位置的影响,产生了两类新的含叔醇的α-苄基去甲他汀和α-苯基去甲他汀。设计,合成和评估了十二种α-取代的诺他汀类药物对所有四种导致人类疟疾的疟原虫的消化液中存在的纤溶酶II和纤溶酶IV直向同源物(PM4)的抑制作用。已开发出新的合成路线来生产所需的α-取代的诺他汀类药物,为纯立体异构体。最好的化合物为所有PM4提供的K i值都在纳摩尔范围内,椭圆疟原虫的PM4的最佳值为110 nM。另外,获得了与密切相关的人天冬氨酸蛋白酶组织蛋白酶D的优异的选择性。通过使用线性相互作用能法(LIE)计算抑制剂与蛋白质的结合亲和力,可以合理化丧失P1取代基后对恶性疟原虫PM4的亲和力。