Studies of HIV-1 Protease Inhibitors. II. Incorporation of Four Types of Hydroxyethylene Dipeptide Isosteres at the Scissile Site of Substrate Sequences.
作者:Mitsuya SAKURAI、Susumu HIGASHIDA、Machiko SUGANO、Takahide NISHI、Fujio SAITO、Yasuo OHATA、Hiroshi HANDA、Tomoaki KOMAI、Ryuichi YAGI、Takashi NISHIGAKI、Yuichiro YABE
DOI:10.1248/cpb.41.1378
日期:——
hydroxyethylene dipeptide isosteres. For the synthesis of the latter two isosteres, a newly developed synthetic method for gamma-lactone was applied. The inhibitory activities of these peptides were evaluated by cleavage assay of partially purified gag proteins or purified synthetic peptide. Of the inhibitors examined, compounds 2c (Z-Asn-(2S,3R,4S,5S)-Phe-psi[H.E.]-Pro-NHB(un); Bu(n) = n-butyl, Ki
设计并合成了包含四种类型的羟乙烯二肽等排体的人免疫缺陷病毒1型(HIV-1)蛋白酶抑制剂。这些抑制剂由八种苯丙氨酰基脯氨酸的立体异构体(Phe-psi [HE] -Pro),四种苯丙氨酰基丙氨酸[Phe-psi [HE] -Ala]立体异构体和一种苯丙酰基甘氨酸(Phe-psi [HE] -Gly)立体异构体组成。和环己基丙氨酰丙氨酸(Cha-psi [HE] -Ala)羟乙烯二肽等排体。对于后两个等排物的合成,使用了新开发的γ-内酯合成方法。这些肽的抑制活性通过部分纯化的gag蛋白或纯化的合成肽的裂解测定来评估。在所检测的抑制剂中,化合物2c(Z-Asn-(2S,3R,4S,5S)-Phe-psi [HE] -Pro-NHB(un); Bu(n)=正丁基,Ki = 0.50 microM) ,21a(Z-Asn-(2R,4S,5S)-Phe-psi [HE] -Ala-NHBu(n),Ki