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Studies on chemical constituents of Chamaenerion angustifolium Ⅰ. Flavonoids from Chamaenerion angustifolium

LIU Yan ze 1, WANG Cai fang 2, ZHANG Zhen zhong 2, HAN Quan bin 1, DING Gang 1 (1 Department of Phytochemistry, Henan College of TCM, Zhengzhou Henan 450008, China; 2 Department of Materia Medica, Medical College of Zhengzhou University, Zh  
Object To study the chemical constituents of Chamaenerion angustifolium (L ) Scop Methods The compounds were isolated on Diaion HP 20 (Tsk), Toyoperari HW 40 (C), MCI gel CHP 20P (Mitsubishi) column and their structures were identified by physiochemical properties and spectral methods Results Four flavonoids were isolated from the whole plant of C angustifolium and they were identified as quercetin 3 O β D galactoside (Ⅰ), quercetin 3 O α L arabinoside (Ⅱ), quercetin 3 O (6′ O galloyl) β D galactoside (Ⅲ), quercetin (Ⅳ) respectively Conclusion Compounds Ⅰ, Ⅱ, Ⅲ were isolated from this plant for the first time
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