New Okaramine Congeners, Okaramines D, E, and F, from Penicillium simplicissimum 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 spectro-scopic methods. Okaramine D exhibited insecticidal activity against silkworms, but the other compounds showed no such activity.