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Abstract

Semi-synthetic glycopeptides having antibacterial activity are described. Also described are processes of preparing such semi-synthetic glycopeptides by chemical modification of a glycopeptide (Compound A, Compound B, Compound H or Compound C) or the monosaccharide made by hydrolyzing the disaccharide moiety of the amino acid-4 of the parent glycopeptide in mild acidic medium to give the amino acid-4 monosaccharide; protection of the amino groups in the molecule; and conversion of the acid moiety on the macrocyclic ring of these scaffolds to certain substituted amides. Also included are the process of conversion of the amide group in amino acid-3 on these scaffolds to various acylureas, acylamide, acylsulfonamide, acylsulfonylurea derivatives and aminomethylation with substituent containing sulfonamide or acylsulfonamide group on amino acid-7 through Mannich reaction procedures. Further provided herein are pharmaceutical compositions containing the compounds, and methods of use of the compounds for the treatment and/or prophylaxis of diseases, including bacterial infections.

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