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发表时间：2009-01-01

发表刊物：大连理工大学学报

所属单位：化工学院

期号：4

页面范围：482-487

ISSN号：1000-8608

摘要：To study the chemical constituents of aerial part of Gentiana scabra Bunge,the plant material was extracted with ethanol,and the constituents were separated and purified from the ethanol extraction by silica gel column chromatography.Their structures were identified as 6-demethoxy-7-methylcapillarisin (Ⅵ) and five other compounds,β-Amyrin(I),β-Sitosterol (II),β-Amyrin acetate (Ⅲ),Uvaol (IV) and Oleanolic acid (V) on the basis of physicochemical properties and spectral methods.Among them,Compound Ⅵ was isolated from Gentianaceae family for the first time.Its characterization of 1D and 2D NMR spectra and possible fragmentation pathway in EI-MS were discussed.The crystal structure of Compound Ⅵ was determined to be orthorhombic and Pbca space group by X-ray crystallographic analysis.Crystal data are as follows:a=1.291 83(19)nm, b=0.721 19(15)nm,c=2.923 7(5)nm,α=90°,β=90°,γ=90°,V=2.723 9(8)nm~3,Z=8,D_c=1.464 g/m~3,μ=0.114 mm~(-1),F(000)=1 248.The dihedral angle between B ring and A/C ring is 99.6°.There are π-π stacking interactions between molecules.

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