Isolation and Structures of Dicyanide Derivatives, Epurpurins A to C, from Emericella purpurea.

Chemical and Pharmaceutical Bulletin
1996.0

Abstract

Three new yellow pigments, designated epurpurins A-C(1-3), were isolated along with variecolin and emindole PA from the dichloromethane extract of rice fermented with Emericella purpurea. Compounds of 1-3 were established as 2,3-dicyano-1,4-di(4-hydroxyphenyl)-1,3-butadiene derivatives by spectroscopic and chemical investigation and X-ray analysis of the dimethyl ether of epurpurin C(4).

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