Altromycins E, F, G, H and I; additional novel components of the altromycin complex.

Abstract

The altromycins are a novel complex of anthraquinone-derived Gram-positive antibiotics with potent antitumor activity. These compounds are produced by an actinomycete, AB 1246E-26 (NRRL 18371), obtained from a South African bushveld soil.1* Altromycins A, B, C, and D, compoundsstructurally related to the pluramycingroup of antibiotics, have been previously reported