The Presence of Substituents on the Aryl Moiety of the Aryl Phosphoramidate Derivative of d4T Enhances Anti-HIV Efficacy in Cell Culture: A Structure−Activity Relationship
作者:Adam Q. Siddiqui、Carlo Ballatore、Christopher McGuigan、Erik De Clercq、Jan Balzarini
DOI:10.1021/jm9803931
日期:1999.2.1
used to establish the stability of the compounds to enzymatic degradation. While there was no apparent correlation between in vitro activity and half-life of enzymatic degradation, there was a close correlation between compound lipophilicity, determined by octanol/water partition coefficient, and in vitro potency. We suggest that substitutions made to the aryl moiety of the aryl phosphoramidate of d4T
合成了抗HIV药物d4T的新的取代芳基氨基磷酸酯衍生物,作为膜溶性细胞内前药,用于游离的生物活性磷酸盐,从而建立化合物结构与体外抗病毒活性之间的关系。相对于亲本核苷,大多数化合物表现出体外效力的提高,并且与d4T不同,它们在胸苷激酶缺陷型细胞中均保留了全部活性。带有对氯芳基(8e)的化合物在体外表达纳摩尔活性,相对于未取代的氨基磷酸酯而言,活性提高了14倍(与d4T相比,提高了100倍)。使用猪肝酯酶的测定用于建立化合物对酶促降解的稳定性。虽然在体外活性和酶促降解的半衰期之间没有明显的相关性,但由辛醇/水分配系数确定的化合物亲脂性与体外效能之间却有着密切的相关性。我们建议对d4T的氨基磷酸氨基磷酸酯的芳基部分进行取代,从而导致亲脂性增强,这可能通过被动扩散增加前药的细胞摄取,从而导致前药浓度降低时抗病毒效力的表达。