Synthesis of S-hepta-O-acetyl lactosyl-1,5-disubstituted-2-isothiobiurets and 1,5-disubstituted-2,4-isodithiobiurets

摘要

Several S-hepta-O-acetyl lactosyl-1,5-disubstituted-2-isothio-biurets 4 and l,5-disubstituted-2,4-isodithiobiurets 5 have been synthesized by the interaction of S-hepta-O-acetyl lactosyl-1-arylisothiocarbamides 3 with phenyl isocyanate and phenyl iso-thiocyanate,respectively.The identities of these newly synthesized compounds are established on the basis of elemental analysis,1R,NMR and mass spectral analysis.