2Pelletier S W.etal.Constituents of Polygala species.structure of tenuifolin,a prosapogenin from Polygala senega and Polygala tenuifolia.Tetahedron.1971,27,4417.
6Liu JY, Yang XD, He JM, et al. Structure analysis oftriterpene- saponins in Polygala tenuifolia by electrospray ionization ion trap multiple-stage mass spectrometry [J]. J MassSpectrom, 2007, 42(7): 861-873.
7Fujita T, Liu D, Ueda S, et al. Xanthone from Polygala tenuifo- lia[J]. Phytoehemistry, 1992, 31 (11): 3997-4000.
8Hanjiro Ito,haruo Taniguehietal. Xanthones and a einnamieaeid- dervation from Polygala tennifolia[ J ] .Phytoehemistry,1977,16:1614.