摘要:
Cleavage of glucosides with NalO4 in MeOH furnishes sesqui-acetals (protected dialdehydes). Olefination of these substrates, followed by endocyclic oxymercuration-demercuration furnishes substituted tetrahydrofurans (1,2-dideoxy-1-aryl-D-ribofuranoses). Proper choice of protecting groups can affect the face selectivity of the oxymercuration step to provide only the desired beta-C-anomer.