Sakyomicin C is a Benzoquinone antibiotic. Sakyomicin C has activity against Gram-positive bacteria and mycobacteria[1].
References
[1] T Nagasawa, et al. Sakyomicins A, B, C and D: new quinone-type antibiotics produced by a strain of Nocardia. Taxonomy, production, isolation and biological properties. J Antibiot (Tokyo). 1984 Jul;37(7):693-9. DOI:10.7164/antibiotics.37.693