Abstract : The facile synthesis of 1-aryl-5-hepta- o -acetyl- β-D -maltosyl-2- S -benzyl-2, 4-isodithiobiurets (IIIa-g) has been achieved by the interaction of 1-hepta- O -acetyl- β–D -maltosyl isothiocyanate (I) with various1-aryl- S -benzyl isothiocarbamides (IIa-g) . All the newly synthesized N -maltosylated compounds characterized by elemental analysis, IR, NMR and Mass spectral studies.