GLYCOPEPTIDE ANTIBIOTICS

摘要

Antibiotic A 40926 complex or a factor thereof are microbially deacylated to produce novel de-acyl A 40926 antibiotics of formula (I) wherein A represents a 2-amino-2-deoxy-beta-D-glucopyranosiduronic acid group and B represents hydrogen, alpha-D-mannopyranosyl or 6-acetyl-alpha-D-mannopyranosyl and the addition salts thereof. The de-acyl A 40926 antibiotics and their addition salts are especially active against gram-positive bacteria.