Abstract
The aerial parts of
Hypoestes forskalei yielded a new fusicoccane diterpene ketone, named hypoestenone. Its structural assignment was based on chemical derivatization and
1H and
13C NMR spectroscopic studies, mainly 2D NMR experiments, including long-range COSY and HETCOR correlations. X-Ray crystallographic analysis established the complete structure and relative stereochemistry of the epoxide of hypoestenone.