Acyl-lupeol esters from Parahancornia amapa (Apocynaceae)

from the roots of parahancornia amapa, family apocynaceae, the following compounds were isolated and identified nine new and ten known 3b-o-acyl lupeol esters, b-sitosterol, stigmasterol, b-sitosterone, the triterpenoids b-amyrin, a-amyrin, lupeol and their acetyl derivatives. the structures of these compounds were established by spectroscopic data, mainly 1h and 13c (hbbd and dept) nmr spectra. the methyl esters obtained by hydrolysis of acyl lupeol esters and methylation of the corresponding acids were characterized by ms-gc analysis.