介绍了环Sal-核苷酸方法的概念扩展。抗 HIV 活性核苷类似物 d4T 1 的新环盐衍生物的特征是掺入了可酶切的羧酸酯部分,目的是将三酯捕获在细胞内(“锁定”概念)。描述了在环Sal部分的3-或5-位带有不同酯基的环Sal-三酯。令人惊讶的是,只有乙酰基酯和乙酰丙酸酯在 CEM 细胞提取物中容易裂解,而烷基酯被发现是稳定的。尽管如此,在体外抗 HIV 检测中,大多数化合物实现了胸苷激酶旁路,从而证明它们至少充当核苷酸传递系统。†为了纪念和庆祝 Leroy B. Townsend 教授 70 岁生日。
“LOCK-IN” MODIFIED <i>CYCLOSAL</i> NUCLEOTIDES—THE SECOND GENERATION OF <i>CYCLOSAL</i> PRODRUGS
作者:D. Vukadinović、N. P. H. Böge、J. Balzarini、C. Meier
DOI:10.1081/ncn-200059298
日期:2005.4.1
A new generation of cycloSal-pronucleotides is presented. CycloSal-d4TMPs have been modified by introduction of an esterase-cleavable site in order to trap them inside cells. Hydrolysis studies in different media (PBS, CEM/O- and liver extracts) and anti-HIV evaluation of separated diastereomers revealed unexpected differences between the isomers.