Altromycins, novel pluramycin-like antibiotics. II. Isolation and elucidation of structure

A novel complex of Gram-positive Antibiotics was produced from the fermentation of an actinomycete culture AB 1246E-26. The Antibiotics were recovered from the whole fermentation broth by extraction with organic solvent and isolated using counter-current chromatography. UV and IR data place these compounds in the anthraquinone-derived class of Antibiotics. Mass spectral and NMR data indicate a new complex of compounds related to, but distinctly different from the pluramycin type Antibiotics.