Crude oil of Copaifera cearensis was subjected to flash chromatography
on KOH-impregnated silica gel from which three fractions were obtaine
d: hexane, dichloromethane and methanol fractions. From the MeOH fract
ion a new sesquiterpenoid acid was identified. (C) 1998 Elsevier Scien
ce Ltd. All rights reserved.