Microbial conversion of .EPSILON.-pyrromycinone and .EPSILON.-isorhodomycinone to 1-hydroxy-13-dihydrodaunomycin and n-formyl-1-hydroxy-13-dihydrodaunomycin and their bioactivities.

Abstract
New anthracycline antibiotics, I-hydroxy-13-dihydrodaunomycin and N-formyl-1-hydroxy-13-dihydrodaunomycin were biosynthesized by a blocked mutant of Streptomyces coeruleorubidus ME130-A4 from .epsilon.-pyrromycinone or .epsilon.-isorhodomycinine.

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