Acyclic Nucleoside Phosphonates Containing a Second Phosphonate Group Are Potent Inhibitors of 6-Oxopurine Phosphoribosyltransferases and Have Antimalarial Activity
作者:Dianne T. Keough、Petr Špaček、Dana Hocková、Tomáš Tichý、Silvie Vrbková、Lenka Slavětínská、Zlatko Janeba、Lieve Naesens、Michael D. Edstein、Marina Chavchich、Tzu-Hsuan Wang、John de Jersey、Luke W. Guddat
DOI:10.1021/jm301893b
日期:2013.3.28
Acyclic nucleoside phosphonates (ANPs) that contain a 6-oxopurine base are good inhibitors of the Plasmodium falciparum (Pf) and Plasmodium vivax (Pv) 6-oxopurine phosphoribosyltransferases (PRTs). Chemical modifications based on the crystal structure of 2-(phosphonoethoxy)ethylguanine (PEEG) in complex with human HGPRT have led to the design of new ANPs. These novel compounds contain a second phosphonate
包含6-氧代嘌呤碱基的无环核苷膦酸酯(ANP)是恶性疟原虫(Pf)和间日疟原虫(Pv)6-氧代嘌呤磷酸核糖基转移酶(PRT)的良好抑制剂。基于2-(膦酰基乙氧基)乙基鸟嘌呤(PEEG)与人类HGPRT配合物的晶体结构的化学修饰,导致了新ANP的设计。这些新颖的化合物包含连接至ANP支架的第二膦酸酯基团。[([[2-[(Guanine-9 H -yl)methyl] propane-1,3-diyl)bis(oxy)] bis(substan)}二膦酸(化合物17)对人体的K i值为30 nM HGPRT和Pf为70 nMHGXPRT。该化合物与人类HGPRT形成复合物的晶体结构表明,它填充或部分填充了活性位点中的三个关键位置:嘌呤碱基,5'-磷酸基团和焦磷酸盐的结合位点。这是第一个能够达到该结果的HG(X)PRT抑制剂。已合成前药,导致细胞培养中生长的Pf的IC 50值低至3.8μM,比母体化合物低25倍。