Some 2′-Modified 4′-Thionucleosides via Sulfur Participation and Synthesis of Thio-Azt from 4′-Thiofuranoid 1,2-Glycal
作者:Najim A. Al-Masoudi、Yaseen A. Al-Soud、Ahmed I. Khodair
DOI:10.1080/10426500307902
日期:2003.6
ThioAZT 14 was synthesized in eight steps from D-arabinose derivative 4 via the new thiofuranoid 1,2-glycal, 5-O-Acetyl-1,2,4-trideoxy-1,4-epithio-3-O-p-toluenesulfonyl-D- threo -pent-1-enitol ( 8 ). Ribosylation of the thiosugar 6 with thymine afforded regioselectively the nucleoside 16 . Treatment of 16 with sodium azide in hot DMF gave, after spontaneous intramolecular displacment, the 2'-azido-xylo