New Okaramine Congeners, Okaramines D, E, and F, from<i>Penicillium simplicissimum</i>ATCC 90288

Abstract

Three new okaramine congeners, okaramines D (1), E (2), and F (3), were isolated from okara fermented with a strain of Penicillium simplicissimum ATCC 90288, and their structures were determined by spectroscopic methods. Okaramine D exhibited insecticidal activity against silkworms, but the other compounds showed no such activity.