A new C-glycosylflavone,5-hydroxyl-4′,7-dimethoxyflavone-6-C-[0-(α-L-3″-acetylrhamno-pyranosy)-1→2-β-D-glucopyranoside](1),along with five known C-glycosylflavones,5-hydroxy-4′,7-dimethoxyfavone-6-C-[0-(α-L-2′...A new C-glycosylflavone,5-hydroxyl-4′,7-dimethoxyflavone-6-C-[0-(α-L-3″-acetylrhamno-pyranosy)-1→2-β-D-glucopyranoside](1),along with five known C-glycosylflavones,5-hydroxy-4′,7-dimethoxyfavone-6-C-[0-(α-L-2′″-acetylrhamnopyranosy1)-1→2-β-D-glucopyranoside](2),embinin(3),embigenin(4),swertisin(5)and swertiajaponin(6)were isolated from the leaves of Iris tectorum Maxim.Their structures were elucidated on the basis of extensive NM R experiments and spectral methods and their cytotoxic activities against A 549(lung cancer)human cell lines were determined.展开更多
AIM: To investigate the chemical constituents of Iris tectorum Maxim. METHOD: The chemical constituents were isolated and purified by solvent extraction together with various chromatographic techniques. The structures...AIM: To investigate the chemical constituents of Iris tectorum Maxim. METHOD: The chemical constituents were isolated and purified by solvent extraction together with various chromatographic techniques. The structures were elucidated on the basis of chemical evidence and spectral data. RESULTS: Seven compounds were isolated from the EtOAc extracts of the rhizome of Iris tectorum Maxim.,which were apocynin (Ⅰ),rhamnocitrin (Ⅱ),tectorigenin (Ⅲ),iristectorigenin A (Ⅳ),β-sitosterol(Ⅴ),dihydrokaempferide (Ⅵ) ,irigenin(Ⅶ);seven compounds were isolated from the n-BuOH extracts,which were tectoridin (Ⅷ),androsin (Ⅸ),n-Butyl-β-D-fructopyranoside (Ⅹ),iristectorin B (Ⅺ),iridin (Ⅻ),tectorigenin-7-O-β-glucosyl-4′-O-β-glucoside (),daucosterol (■). CONCLUSION: Compound Ⅱ,Ⅵ,Ⅹ were isolated from Iris for the first time.展开更多
基金The project supported by the National Natural Science Foundation of China(Grant No.30170103).
文摘A new C-glycosylflavone,5-hydroxyl-4′,7-dimethoxyflavone-6-C-[0-(α-L-3″-acetylrhamno-pyranosy)-1→2-β-D-glucopyranoside](1),along with five known C-glycosylflavones,5-hydroxy-4′,7-dimethoxyfavone-6-C-[0-(α-L-2′″-acetylrhamnopyranosy1)-1→2-β-D-glucopyranoside](2),embinin(3),embigenin(4),swertisin(5)and swertiajaponin(6)were isolated from the leaves of Iris tectorum Maxim.Their structures were elucidated on the basis of extensive NM R experiments and spectral methods and their cytotoxic activities against A 549(lung cancer)human cell lines were determined.
文摘AIM: To investigate the chemical constituents of Iris tectorum Maxim. METHOD: The chemical constituents were isolated and purified by solvent extraction together with various chromatographic techniques. The structures were elucidated on the basis of chemical evidence and spectral data. RESULTS: Seven compounds were isolated from the EtOAc extracts of the rhizome of Iris tectorum Maxim.,which were apocynin (Ⅰ),rhamnocitrin (Ⅱ),tectorigenin (Ⅲ),iristectorigenin A (Ⅳ),β-sitosterol(Ⅴ),dihydrokaempferide (Ⅵ) ,irigenin(Ⅶ);seven compounds were isolated from the n-BuOH extracts,which were tectoridin (Ⅷ),androsin (Ⅸ),n-Butyl-β-D-fructopyranoside (Ⅹ),iristectorin B (Ⅺ),iridin (Ⅻ),tectorigenin-7-O-β-glucosyl-4′-O-β-glucoside (),daucosterol (■). CONCLUSION: Compound Ⅱ,Ⅵ,Ⅹ were isolated from Iris for the first time.