A Strategy for the Stereoselective Preparation of Thymidine Phosphorothioates with the (R) or the (S) Configuration at the Stereogenic Phosphorus Atom and Their Application to the Synthesis of Oligodeoxyribonucleotides with Stereochemically Pure Phosphate/Phosphorothioate Chimeric Backbones
作者:Yoshihiro Hayakawa、Yoshiko Hirabayashi、Mamoru Hyodo、Satoko Yamashita、Tomoyuki Matsunami、Dong-Mei Cui、Rie Kawai、Hidehiko Kodama
DOI:10.1002/ejoc.200600155
日期:2006.9
(Sp)-thymidine 3′,5′-cyclic phosphate to give the (Sp) isomer as the major component, 2) stereospecific sulfurization of the allyl (Sp)-thymidine 3′,5′-cyclic phosphate to afford an allyl (Rp)-thymidine 3′,5′-cyclic phosphorothioate, 3) regioselective and stereoselective methanolysis of the allyl (Rp)-thymidine 3′,5′-cyclic phosphorothioate to provide an allyl methyl (Rp)-thymidine 3′-phosphorothioate
所得(Rp)-和(Sp)-二胸苷硫代磷酸酯被转化为它们的3'-亚磷酰胺。然后通过使用这些亚磷酰胺作为构建单元合成具有立体化学纯磷酸盐/硫代磷酸酯混合骨架的寡聚脱氧核糖核苷酸。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)