Chemical Constituents from the Heartwood of Dalbergia cochinchinensis

Ten compounds were isolated from the heartwood of Dalbergia cochinchinensis. On the basis of spectral analysis,their structures were elucidated as stigmasterol( 1),pterostilbene( 2),4-epicyptomeridiol( 3),pterocarpol( 4),7-epi-4-eudesmene-1β,11-diol( 5),oleanolic acid( 6),ferulaldehyde( 7),isoferulaldehyde( 8),1-( 4'-hydroxy-2'-methoxyphenyl)-3-( 3″-hydroxy-4″-methoxyphenyl)-propane( 9),vanillin( 10). All compoundswere isolated from this plant for the first time.