Synthetic Approaches to Nuclease-Resistant, Nonnatural Dinucleotides of Anti-Hiv Integrase Interest
作者:Guochen Chi、Vasu Nair
DOI:10.1080/15257770500265703
日期:2005.9.1
New, nonnatural dinucleotide 5'-monophosphates with a surrogate isonucleoside component of L-related stereochemistry, have been synthesized. Structures of the target compounds were confirmed by multinuclear NMR spectra (H-1, C-13, P-31, COSY), UV hypochromicity, FAB HRMS data and X-ray crystallography. These compounds are totally resistant to cleavage by 3'- and 5'-exonucleases. Dinucleotides of this study with a terminal L-isonucleoside component showed remarkable selectivity for inhibition of the strand transfer step of HIV-1 integrase. To the best of our knowledge, these compounds represent only the second example of this type of selectivity of inhibition of the strand transfer step.