Studies of Human Immunodeficiency Virus Type 1 (HIV-1) Protease Inhibitors. III. Structure-Activity Relationship of HIV-1 Protease Inhibitors Containing Cyclohexylalanylalanine Hydroxyethylene Dipeptide lsostere.
作者:Mitsuya SAKURAI、Susumu HIGASHIDA、Machiko SUGANO、Hiroshi HANDA、Tomoaki KOMAI、Ryuichi YAGI、Takashi NISHIGAKI、Yuichiro YABE
DOI:10.1248/cpb.42.534
日期:——
replacement of the P4-P2 subsites of substrate-based human immunodeficiency virus type 1 protease (HIV-1 PR) inhibitors containing cyclohexylalanylalanine hydroxyethylene dipeptide isostere (Cha-psi [H.E.]-Ala) at positions corresponding to the scissile sites of substrates was carried out. The structure-activity relationship revealed that compounds with the combination of hydrophilic P3 and beta-branched hydrophobic
在对应于底物易裂解位点的位置上,系统性替换了含有环己基丙氨酰丙氨酸羟乙基二肽等排物(Cha-psi [HE] -Ala)的基于底物的人类免疫缺陷病毒1型蛋白酶(HIV-1 PR)抑制剂的P4-P2亚位点执行。构效关系表明,具有亲水性P3和β-支链疏水性P2氨基酸的化合物通常对HIV-1 PR具有很强的抑制活性。特别是化合物4(Boc-Orn-Val-Cha-psi [HE] -Ala-NHBun; Bu(n)=正丁基,Ki = 11 nM)和6(Z-Orn-Val-Cha-psi [ HE] -Ala-NHBun,Ki = 8 nM)表现出良好的酶选择性,对紧密相关的天冬氨酸蛋白酶,胃蛋白酶,组织蛋白酶D和肾素没有明显的抑制活性。作为(抗-Mo-MSV / MLV复合物(Mo-MSV =莫洛尼氏鼠肉瘤病毒; MLV =鼠白血病病毒))活性的可能模型系统,进行了研究。发现这两种化合物在NIH3T3细胞中均适度抑制Mo-MSV