The role of carbohydrates in tailoring the synthesis of heterocyclic compounds has grown substantially since it was last reviewed (Current Org. Chem., 2000, 4, 609). This article includes correcting, revising, inserting of missing references, and updating the earlier account. The sequence for numbering the formulae is the same as in the earlier one and the new formulae following the old ones.
Keywords: Carbohydrate, Osazones, Heterocycles, Hydrazones, Nucleosides, Organic Raw Materials