G7063-2, a new nitrogen-containing antibiotic of the epoxydon group, isolated from the fermentation broth of a species of Streptomyces.

Antibiotic G7063-2, isolated from a Streptomyces species, is a new nitrogen-containing analogue of phyllostine and terreic acid. In vitro G7063-2 is moderately active against both Gram-positive and Gram-negative bacteria and weakly active against fungi. It is toxic to mice.