Diastereoselective Synthesis of Aryloxy Phosphoramidate Prodrugs of 3′-Deoxy-2′,3′-didehydrothymidine Monophosphate
作者:Cristina Arbelo Roman、Jan Balzarini、Chris Meier
DOI:10.1021/jm100817f
日期:2010.11.11
-2-thione 1 was used as a chiral auxiliary to introduce the stereochemistry at the phosphorus atom. In the last step of the developed reaction sequence, the nucleoside analogue d4T was introduced to a stereochemically pure phosphordiamidate which led to the formation of the almost diastereomerically pure phosphoramidate prodrugs 8a−d (≥95% de). As expected, the individually prepared diastereomers of
报道了3'-脱氧-2',3'-二氢胸苷单磷酸酯(d4TMP)的芳氧基氨基磷酸氨基酯前药的第一个非对映选择性合成。在我们的方法中,(S)-4-异丙基噻唑烷-2-硫酮1被用作手性助剂,以在磷原子上引入立体化学。在开发的反应序列的最后一步,将核苷类似物d4T引入到立体化学纯的磷酰胺二酸酯中,这导致了几乎非对映体纯的氨基磷酸酯前药8a - d的形成。(≥95%de)。如所预期的,单独制备的氨基磷酸酯前药的非对映异构体在抗病毒活性方面显示出显着差异。此外,差异强烈取决于连接至氨基磷酸酯部分的芳基取代基。