Design and Synthesis of Oxymatrine Analogues Overcoming Drug Resistance in Hepatitis B Virus through Targeting Host Heat Stress Cognate 70
作者:Li-Mei Gao、Yan-Xing Han、Yu-Ping Wang、Yu-Huan Li、Yong-Qiang Shan、Xin Li、Zong-Gen Peng、Chong-Wen Bi、Tian Zhang、Na-Na Du、Jian-Dong Jiang、Dan-Qing Song
DOI:10.1021/jm101325h
日期:2011.2.10
density on the ring D reduced the activity, and (iii) introducing a proper substituent at the 13- and/or 14-position(s), especially electron-withdrawing groups, might enhance the activity. Among the analogues, 6b possessing 13-ethoxyl afforded an increased activity in respect to 1. Importantly, it was active for either wild-type or lamivudine-resistant HBV, as its target is host Hsc70 but not viral enzymes
热应激同源蛋白70(Hsc70)是乙型肝炎病毒(HBV)复制所需的宿主蛋白,而氧化苦参碱(1)抑制Hsc70表达。以Hsc70为抗HBV的靶标,合成了22个1,在位置1、13或14处定义有取代基的类似物,并评估了其对Hsc70 mRNA表达的活性。SAR显示(i)1位上的氧原子不是必不可少的;(ii)D环上电子密度的增加会降低活性;(iii)在13-和/或14-处引入适当的取代基位置,特别是吸电子基团,可能会增强活性。在类似物中,具有13-乙氧基的6b相对于1具有更高的活性。。重要的是,它对野生型或耐拉米夫定的HBV均具有活性,因为其靶标是宿主Hsc70,而不是病毒酶。LD 50的图6b中的小鼠在口服途径超过750毫克/公斤。我们认为化合物6b有希望进一步研究。