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C-glycosylflavones from Stellaria media

HU Yong-Mei 1,YE Wen-Cai 1,2*,LI Qian 1,TIAN Hai-Yan 1,WANG Hao 1,DU Hong-Yu3 1Department of Phytochemistry,China Pharmaceutical University,Nanjing 210009;2Institute of Traditional Chinese Medicine and Natural Products,Jinan University,Guangzhou 510632;3Zhe Jiang Apeloa Pharmaceutical Co.Ltd,Hengdian 3221184,P.R.China  
AIM:To isolate the chemical constituents from the aerial parts of Stellaria media(L.)Cyr..METHODS:The compounds were isolated through column chromatography and recrystallization.The structures were elucidated by means of physio-chemical data and spectroscopy.RESULT:Fourteen C-Glycosylflavones were isolated from this plant,and their structures were elucidated as apigenin(1),vicenin(6,8-di-C-β-D-glucopyranosyl apigenin)(2),8-C-β-D-galactopyranosyl isovitexin(6-C-β-D-glucopyranosyl-8-C-β-D-galactopyranosyl apigenin)(3),6-C-β-D-galactopyranosyl vitexin(6-C-β-D-galactopyranosyl-8-C-β-D-glucopyranosyl apigenin)(4),6,8-di-C-α-L-arabinopyranosyl apigenin(5),schaftoside(6-C-β-D-glucopyranosyl-8-C-α-L-arabinosyl apigenin)(6),isoschaftoside(6-C-α-L-arabinosyl-8-C-β-D-glucopyranosyl apigenin)(7),6-C-β-D-galactopyranosyl-8-C-α-L-arabinosyl apigenin(8),8-C-β-D-galactosyl apigenin(9),vitexin(8-C-β-D-glucopyranosyl apigenin)(10),isovitexin(6-C-β-D-glucopyranosyl apigenin)(11),tricetin 6,8-di-C-β-D-glucopyranosyl(12),tricetin 6-C-α-L-arabinosyl-8-C-β-D-glucopyranosyl(13)and 7-O-β-D-glucopyranosyl-6-C-β-D-6″-acetyl-glucopyranosyl apigenin(14).CONCLUSIONS:Compounds 3~8 and compounds 12 and 13 have been found in the plant for the first time,and compound 14 is a new C-glycosylflavone.
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