Acyclic purine phosphonate analogs as antiviral agents. Synthesis and structure-activity relationships
作者:Choung Un Kim、Bing Yu Luh、Peter F. Misco、Joanne J. Bronson、Michael J. M. Hitchcock、Ismail Ghazzouli、John C. Martin
DOI:10.1021/jm00166a019
日期:1990.4
observed by the bovine brain guanylate kinase. Since all isosteric analogues of PMEG (7-9) were not inhibitory against HSV-1 and HSV-2, the presence of the 3'-oxygen atom in the PME purines proved critical for anti-HSV activity. Introduction of the 1'-methyl group on the PMEG side chain significantly reduced its anti-HSV activity. Analogue 11, which is a mimic of the phosphate by incorporation of the alpha
合成了一系列9-(膦酰基烷基)嘌呤,它们是9- [2-(膦酰基甲氧基)乙基]嘌呤的类似物(鸟嘌呤,PMEG,1;腺嘌呤,PMEA,2)。测试了类似物对1型和2型单纯疱疹病毒(HSV-1和HSV-2),人巨细胞病毒(HCMV),罗氏鼠白血病病毒(R-MuLV)和1型人类免疫缺陷病毒(HIV-1)的活性)。随着烷基链长度的变化,嘌呤碱和膦酰基甲氧基官能团之间有两个碳原子,从而实现了最佳活性。尽管与PMEG的结构相似且pKa2值接近8,但牛脑鸟苷酸激酶未观察到8的磷酸化。由于所有PMEG的等距类似物(7-9)均不能抑制HSV-1和HSV-2,因此存在3' PME嘌呤中的-氧原子被证明对抗HSV活性至关重要。在PMEG侧链上引入1'-甲基会大大降低其抗HSV活性。通过掺入α,α-二氟碳来模拟磷酸盐的类似物11对HSV-1和HSV-2无效。这些结果表明,PME嘌呤的抗HSV活性的结构要求似乎非常严格。