A stereocontrolled radical access to C-allyl β-D-glycopyranosides from glycopyranosylidene dihalides found en route to C-glycodienes
摘要:
Application of the Keck reaction to peracetylated glycopyranosylidene dihalides under mild conditions led efficiently to chloro C-allyl glycosides which were converted to either the corresponding C-allyl beta-D-glycosides or C-D-glycodienes on treatment with, respectively, tri-n-butyltin hydride and DBU. (C) 1997 Elsevier Science Ltd.