A novel product, isolated from a culture broth of Actinoplanes ianthinogenes fermented for producing purpuromycin, was purified and its structure established on the basis of physico-chemical data and chemical reactions. The new product resulted to be structurally related to griseorhodins, a group of hydroquinonic antibiotics obtained from Streptomyces californicus. This compound showed a weak activity against Gram-positive and resulted inactive against Gram-negative bacteria and Candida albicans.
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PANZONE et al. (1997) studied this question.