DUMORTENOLS, NOVEL SKELETAL SESQUITERPENOIDS FROM THE ARGENTINIAN LIVERWORT DUMORTIERA HIRSUTA

Abstract

The diethyl ether extract of the Argentina liverwort Dumortiera hirsuta yielded a sesquiterpenoid with a novel carbon skeleton. The structure was estalished by extensive 2D NMR techniques and X-ray crystallographic analysis. It was shown to be 3, 4, 11-trimethyl-7-methylenebicyclo [6. 3. 0] undec-2-en-11α-ol.