Stereoselective synthesis of 1′β-2′,3′-dideoxy-2′-bis(ethoxycarbonyl)methyluridine nucleosides by ring opening of cyclopropanated glycals
Abstract
Cyclopropanations of glycals followed by Lewis acid-mediated glycosylations with 5-substituted uracils afforded 1′β-2′,3′-dideoxy-2′-bis(ethoxycarbonyl)methyluridine nucleosides in a highly regiospecific and stereoselective manner in good yields.