Chemical constituents from Dendrobium nobile / 中成药

AIM To study the chemical constituents from Dendrobium nobile Lindl..METHODS The 95％ ethnol extract from D.nobile was isolated and purified by silica and Sephadex LH-20,then the structures of obtained compounds were identified by physicochemical properties and spectral data.RESULTS Eight compounds were isolated and identified as erianin (1),gigantol (2),moscatin (3),confusarin (4),4,5-dihydroxy-2-methoxy-9,10-dihydro-phenanthrene (5),coumarin (6),hexadecanoic acid,methyl ester (7),dibutyl phthalate (8).CONCLUSION Compounds 1,3,5,6,7,8 are isolated from this plant for the first time.