Structure of conocephalenol, a sesquiterpenoid alcohol from the European liverwort Conocephalum conicum: determination of the absolute configuration by total synthesis
Abstract
The structure of conocephalenol, a brasilane sesquiterpenoid alcohol isolated from the European liverwort Conocephalum conicum, has been determined by extensive NMR studies including a 2D INADEQUATE experiment and by total synthesis, which established the absolute stereochemistry as 1R,9S.