Acyl-lupeol esters from Parahancornia amapa (Apocynaceae)

From the roots of Parahancornia amapa, family Apocynaceae, the following co mpounds were isolated and identified nine new and ten known 3b-O-acyl lupeo l esters, b-sitosterol, stigmasterol, b-sitosterone, the triterpenoids b-am yrin, a-amyrin, lupeol and their acetyl derivatives. The structures of thes e compounds were established by spectroscopic data, mainly H-1 and C-13 (HB BD 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.