The Protium heptaphyllum (almecegueira) exudes an amorphous resin consisting of four binary mixtures of triterpenoids, and the mixture of ,-amyrin its major constituent. In folk medicine, the resin of Protium heptaphyllum is used as anti-inflammatory, gastroprotective, analgesic, expectorant and healing. The mixture of pentacyclic triterpenes ,-amyrin (AB) (63:37) has gastroprotective, antipruritic, antiinf...