Stereoselectivity in the Coupling Reaction between 2-Phenylthio-2,3-dideoxyribose and Silylated Pyrimidine Bases

Abstract
Coupling reaction between 2-α-phenylthio-2,3-dideoxyribose and silylated pyrimidine bases in the presence of SnCl4 proceeded stereoselectively to give the β-anomers. These nucleosides were converted to 2′,3′-dideoxy-2′,3′-didehydronucleosides by oxidation followed by thermal elimination.