Isolation and structural elucidation of the constituents of China mangrove Sonneratia apetala.chromatography methods were used for isolation of compounds, spectroscopic methods were used for structural identifyication.seven known compounds named (+/-) symgaresinol, betulinic acid, lupeol, lupeone, stigmast-5-ene-3beta, 7alpha-diol, beta-alpha myrin hexadecaneate, physcoion were isolated.these known compouns were unreported previously from this plant.