New anthracycline antibiotics, auramycins and sulfurmycins. I. Isolation and characterization of auramycins A and B, and sulfurmycins A and B.

Abstract
Auramycins A and B and sulfurmycins A and B, new anthracycline antibiotics were discovered from the culture of a strain OBB-111, which was identified as Streptomyces galilaeus. The structures of the antibiotics were determined, indicating that auramycins and sulfurmycins are anthracycline glycosides of new aglycones designated auramycinone and sulfurmycinone.