Pentacyclic triterpenoids from the leaves of Terminalia brasiliensis

摘要

Eleven oleanane, ursane and lupane-type triterpenes were isolated from the leaves of Terminalia brasiliensis Camb, daturadiol (3b,6b-dihydroxy-olean-12-ene), 3b-hydroxy-30-norlupan-20-one, lupenone, b-amyrenone, a-amyrenone, lupeol, b-amyrin, a-amyrin, betulin, erythrodiol and uvaol, in addition to squalene, sitosterol and a-tocopherol. The structures of these compounds were identified by 1H and 13C NMR spectral analysis and comparison with literature data.