Flavonoids from the Aerial Parts of Blumea megacephala
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Blumea is a genus of the Compositae, comprising more than 80 species distributed mainly in tropical and subtropical Asia, Africa, and Oceania . Some important medicinal plants of this genus are used in traditional medicine. Among them, Blumea megacephala is chiefly distributed in the south of China and is used as traditional herbal medicine for treating diseases such as malaria, bronchitis, puerperal metrorrhagia, puerperal edema, and barrenness . Previous phytochemical investigations on this plant indicated the presence of phenolic acids, triterpenoids, and essential oils [2, 3, 4]. As part of an ongoing research on the secondary metabolites from the genus Blumea, we sequentially performed a phytochemical study on the aerial parts of B. megacephala. As a result, eight flavonoids were obtained.
The aerial parts of this plant were collected from Guizhou Province of P. R. China in June 2015 and were identified by Dr. Daopeng Tan (pharmacognosy). A voucher specimen (No. BM150601)...