Triterpenes, Flavonoids, and Lignans from Dracocephalum heterophyllum
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Dracocephalum heterophyllum (Labiatae) is a traditional Tibetan medicine growing on the Qinghai-Tibet Plateau in a special living environment of high elevation and strong sunlight irradiation. The plant is distributed widely in Sitsang, Qinghai, Sinkiang, and Gansu Provinces of China. In traditional Tibetan Medicine, D. heterophyllum is known as “Ao-Ga” or “Ji-Mei-Qing-Bao,” which has been used as an ethnomedicine to treat various ailments such as jaundice, hepatopathy, cough, lymphangitis, mouth ulcers, and tooth diseases. There are reports that the herb possesses antiviral activity , anti-anoxic effect , anti-asthma, anti-coughing, and disinfectant action . The chemical composition of the volatile oil of D. heterophyllum has been reported . The present work reports the nonvolatile components of D. heterophyllum. Fourteen different compounds were found in this plant that contain triterpenes, flavonoids, lignans, and some other compounds. It is suggested that triterpenes...
The authors gratefully appreciate support from Senior Engineer Li-Juan Mei from the Northwest Institute of Plateau Biology, CAS, who helped us to identify the authenticity of D. heterophyllum. The authors also like to thank the grant support from the advanced technology research and development program of Qinghai Province (2014-GX-220).
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