The pentacyclic triterpenoids ursolic acid and oleanolic acid have been extracted from `` Astianthus '' . So have cinnamic acid , p- methoxycinnamic acid , and stigmasterol .
The oleanolic triterpenoids pentacyclic acid and cinnamic acid have been extracted from `` Astianthus '' . So have ursolic acid , p- methoxycinnamic acid , and stigmasterol .