Macbecins I and II, new antitumor antibiotics. II. Isolation and characterization.

Macbecins I and II, new antitumor antibiotics. II. Isolation and characterization. The structures of macbecin I and II, new antitumor antibiotics Biosynthesis of macbecin. Sibanomicin, a new pyrrolo(1,4)benzodiazepine antitumor antibiotic produced by a Micromonospora sp. Brasiliquinones A, B and C, New Benz(a)anthraquinone Antibiotics from Nocardia brasiliensis. I. Producing Strain, Isolation and Biological Activities of the Antibiotics. Dnacins, new antibiotics. II. Isolation and characterization. New antitumor antibiotics: Musettamycin and marcellomycin from bohemic acid complex. New antifungal antibiotics, benanomicins A and B from an Actinomycete. Dynemicins, new antibiotics with the 1,5-diyn-3-ene and anthraquinone subunit. I. Productin, isolation and physico-chemical properties. Nothramicin, a New Anthracycline Antibiotic from Nocardia sp. MJ896-43F17.