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[Studies on antiviral flavonoids in yinqiaosan powder]
1School of Chinese Pharmacology, Beijing University of Chinese Medicine, Beijing 100029, China.
Abstract
Objective:
To study the chemical constituents in Yinqiaosan Powder that have antiviral action on influenza.
Method:
Isolation of the constituents by different kinds of column chromatography and elucidation of their structures by chemical and spectral methods.
Results:
Seven flavonoids were obtained, and six of them were identified as linarin, acacetin, hesperidin, isoquiritigenin, isoquiritin and hyperoside respectively.
Conclusion:
Linarin and acacetin were isolated from Yinqiaosan Powder for the first time.