Studies on ezomycins, antifungal antibiotics. IX. Isolation and antimicrobial activities of ezomycins B1, B2, C1, C2, D1 and D2

From the antifungal ezomycin complex produced by a strain of Streptomyces were isolated six new components named ezomycins B1, B2, C1, C2, D1 and D2. They are novel pseudouridine-type C-C nucleoside antibiotics, of which B1 is the most active.