Macrolide antibiotic M 119

Abstract

Disclosed is a novel macrolide antibiotic, M 119, of the formula (A): ##STR1## wherein the substituent R designates either (a) or (d): (a) R: H (d) R: OH. The antibiotic M 119 has antimicrobial activity, particularly against Gram-positive bacteria, typical pathogenic bacteria falling under Gram-negative bacteria such as Haemophilus influenzae, and mycoplasmas, and is effective against infections induced by such bacteria.

Dependencies are inferred from the claim text.