Synthesis of unsaturated 4′-azido pyranosyl thymines as potential antiviral and anti-HIV agents
作者:Michel Bessodes、Marie-José Egron、Jean Filippi、Kostas Antonakis
DOI:10.1039/p19900003035
日期:——
Condensation of thymine with diacetyl-D-xylal and triacetyl-D-glucal afforded the unsaturated nucleosides 1, 6 and 7. After deacetylation and selective protection of the primary hydroxy groups in the case of the glucose derivatives, these compounds were either submitted to Mitsunobu reaction with hydrazoic acid to give the azides 4, 14 and 15, or oxidised with PDC–molecular sieves to give the unsaturated keto
的缩合胸腺嘧啶与二乙酰基d -xylal和三乙酰基d -glucal得到不饱和的核苷1,6和7。脱乙酰化,并在葡萄糖衍生物的情况下的伯羟基的选择性保护后,这些化合物要么提交Mitsunobu反应与叠氮酸,得到叠氮化物4,14和15,或者用PDC-分子筛,得到不饱和的氧化的酮核苷3,12和13。该叠氮化物的还原4,14和15得到氨基衍生物5,18和19。后两种化合物的氧化得到氨基脲酸酯核苷20和21。在各种病毒模型,包括HIV初步测试,表明酮3,12和13是这一系列中最活跃的化合物。