Chemical constituents of antitumor active fraction of Lysimachia clethroides Chemical constituents of antitumor active fraction of Lysimachia clethroides Research on Active Constituents Research of Gualou xiebai baijiutang (Ⅲ) the Active Flavanoids Flavonoids from root of Stellera chamaejasme Chemical Constituents from the Flowers of Eupatorium adenophorum Advance in chemical constituents of genus Clematis Advance in chemical constituents of genus Clematis Chemical components of Rumex gmelini (Ⅳ) Variations of flavanoid contents in vine tips among different varieties, parts and time of topping of sweetpotato for vegetable-use Research progress on drug metabolism of flavanoids Nonflavanoid compounds from Epimedium koreanum