Abstract: Reaction of sucrose with trialkyl orthoacetate,subsequent tritylation,acetylation,and detritylation afforded derivatives of sucrose acetate by selectively blocking specific hydroxyls in sucrose and 4-6 acetyl migration.The treatment of sucrose alkyl 4,6-orthoacetate hexaaeetate with water or alcohol in the presence of an acid catalyst afforded corresponding 2,3,6,1',3',4',6'-hepta-O-acetylsucrose and 2,3.1',3',4',6'-hexa-O-acetylsucrose.These derivatives of sucrose acetate were available from sucrochemical studies and have been developed as convenient intermediate for the synthesis of sucrose derivatives.

Key words: Sucrose acetate, Trialkyl orthoacetate, Sucrose aikyl 4,6-orthoacetate hexaacetate