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W e have prepared three series of functionalized disaccharides of the type A(6->n)B and a trisaccharide with the formula A-O-B-O-C, in which A = D-glucose (or i t s derivatives) and both B and C are any of Dfructose, D-galactose, J3-glucose, xylitol and glycerol (or their derivatives). These compounds resulted from the regiospecific functionalization of either A or B and either the partial or t o t a l deprotection of either 6-C-(3-deoxy-l,2 : 5,6-di-G-isopropylidene-Dglucofuranos-3-yl) -3+alkyl-l,2i)-isopropylidene~-D-glucofuranose or its analogues of type 1 described i n part 1.1 W e also report results on surface activity and biological properties of some of the mlecules prepared.