Facile syntheses of d-mannose hexa- and nonasaccharides: the di- and trimer of the trisaccharide repeating unit of the cell-wall mannans of Epidermophyton floccosum, Trychophyton mentagrophytes, Microsporum canis and related species of Microsporum

Abstract A highly efficient strategy for the preparation of d -mannose hexa- and nonasaccharides, the dimer and trimer of the α- d -Man p -(1→6)-[α- d -Man p -(1→2)-] d -Man p trisaccharide repeating unit of the cell-wall mannans from the fungi Epidermophyton floccosum , Trychophyton mentagrophytes , Microsporum canis , M . cookei and M . racemosum , has been developed using 1,2,6-tri- O -acetyl-3,4-di- O -benzoyl-α- d -mannopyranose ( 6 ) as the key synthon.