Antibacterial and cytotoxic activities of undescribed cassiaric acid and other constituents from stem barks.

A new lupane-type triterpene, 2,3-dihydroxylupan-29-oic acid (), and one new ceramide derivative: (2,2',3,4,57',11,12',20)--[2'-hydroxyoctadeca-6,11-dienoyl]-2-aminohexacosa-11,20-diene-1,3,4,5-tetrol () were isolated from the ethyl acetate fraction obtained from the methanol extract of the stem barks of together with seven known compounds. Their structures were characterized using two-dimensional NMR, mass spectrometry, and compared with reported data. To date, this is the first report of the isolation of a multiple double bonds sphingolipid type from this genus.