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从银杏叶的乙酸乙酯部分首次分离得到一黄酮甙类成分，经理化常数测定、光谱分析，确定为山奈酚３Ｏ鼠李糖甙
The flavonoid glycosides were first isolated from the ethyl acetate fraction of Ginkgo biloba leaves, and the determination of the managerial constants and the spectral analysis were performed to determine the kaempferol 3-O-rhamnoside.