13C NMR Analysis: Terpenoids, Steroids and Carotenoid from Diospyros soubreana (Ebenaceae)

ABSTRACT

Phytochemical investigations on bark of trunks and leaves of Diospyros soubreana (Ebenaceae) led to the isolation and characterisation of nine molecules one monocyclic sesquiterpenoid lactone (1), five pentacyclic triterpenes (2, 3, 4, 5 and 6), two sterols (7 and 8) and one carotenoid alcohol (9), all isolated for the first time from this species. The structural elucidation of these compounds was carried out by 13C NMR spectroscopy.