ACID-INDUCED ANOMERIZATIONS OF 1-DEOXY-1-C-ALKENYLGLYCOPYRANOSE DERIVATIVES

[摘要] Precise conditions permitting equilibration between alpha- and beta-anomers of certain 1-deoxy-1-C-alkenylglycopyranose compounds have been established. It is shown that the beta-configuration is favored over the alpha- by a ratio of more than 9:1 at equilibrium. Under these conditions stereoconvergent access to the beta-alkenylglycopyranose derivatives may be achieved in preparatively useful yields.

[发布日期] 1991-05-13