glycopeptidantibiotikum or its salts, their preparation and use as antibiotics and foderudnyttelses and maelkeproduktionsforbedrende resources

摘要

New glycopeptide antibiotics of the formula: CHEM wherein W is the remaining portion of a glycopeptide antibiotic selected from actaplanin factors B1, B2, B3, C1, C2, C3, D1, D2, E1, G, K, L, M, N, O and actaplanin psi aglycone, and salts thereof, particularly the pharmaceutically acceptable salts, are useful new antibiotics are active against gram-positive bacteria and increase feed-efficiency utilization and enhance milk production in ruminants.