Highly oxygenated triterpenes from the roots of Atropa acuminata.

Two new oleanane triterpenes; 2alpha,3alpha,24-trihydroxyolean-12-ene-28,30-dioic acid (1) and 2alpha,3alpha,24,28-tetrahydroxyolean-12-ene (2) have been isolated from the roots of A tropa acuminata. Anti-oxidant p-hydroxyphenethyl trans-ferulate (3), beta-sitosterol-3-O-beta-D-glucopyranoside (4) and oleanolic acid (5) have also been reported for the first time from this species. The structures were determined by spectroscopic studies including 2D-NMR.