Sato T, Kawamoto I, Oka T, Okachi R
J Antibiot (Tokyo). 1982 Mar;35(3):266-71. doi: 10.7164/antibiotics.35.266.
Streptomyces echinosporus MK-213 produces a noval antibiotic echinosporin (XK-213). Isolation of echinosporin was performed by absorption on activated carbon under acidic conditions and then eluted by aqueous acetone. The compound crystallized from methanol is a water soluble white solid composed of C10H9NO5. Echinosporin exhibits weak antibacterial activities against Gram-positive and -negative microorganisms and its shows antitumor activity.