An extension of the cycloSal-pronucleotide approach is presented. Attachment of an enzyme-cleavable ester/acylal group to the cycloSal-d4TMP triesters should allow these compounds to be trapped intracellularly after cleavage. The ester/acylal groups were introduced in the 3- or 5-position of the cycloSal ring system, and surprising differences were observed in hydrolysis studies in CEM cell extracts
介绍了 cycloSal-核苷酸方法的扩展。将酶可裂解的酯/酰基基团连接到 cycloSal-d4
TMP 三酯上应该允许这些化合物在裂解后被捕获在细胞内。在环Sal环系统的3-或5-位引入酯/酰基基团,并且在C
EM细胞
提取物的
水解研究中观察到关于酯/酰基部分的惊人差异。虽然乙酰基酯和
乙酰丙酸酯很容易裂解,但 cycloSal-d4
TMP 酸的烷基酯证明对酶促裂解具有抗性。相比之下,
AM-、POM- 和 POC-酰基在
提取物中迅速裂解,产生 cycloSal-d4
TMP 酸。还介绍了化合物对 HIV 的抗病毒活性。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)