[Study on Chemical Constituents of Panzeria alaschanica].
Cai-yun Shao, Qinghu Wang, Rong-jun Wu, Jiesi Wu, Narenchaoketu Han, Nayintai Dai
Abstract
Cai-yun Shao, Qinghu Wang, Rong-jun Wu, Jiesi Wu, Narenchaoketu Han, Nayintai Dai
Abstract
OBJECTIVE: To study the chemical constituents of the ethyl acetate extract from Panzeria alaschanica. METHODS: The chemical constituents of ethyl acetate extract from Panzeria alaschanica were isolated and purified by silica gel. Their structures were i- dentified by means of spectra. RESULTS: Nine compounds were obtained and identified as 7-Methoxy coumarin (1), Isorhamnetin (2), Caf- feic acid (3), 5-Hydroxy-7,3',4'-trimethoxyflavone (4), 5-Hydroxy-7,4'-dimethoxyflavone (5),Kaempferol (6), Isorhamnetin-3-O-β-D- glucoside (7) Kaempferol-3-O-β-D-glucoside (8), and Isorhamnetin-7-O-β-D-glucuronyl-(1-->6)-O-α-L-rhamnoside (9). CONCLUSION: Compounds 1-4,6,7 and 9 are isolated from this plant for the first time.
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OBJECTIVE: To study the chemical constituents of the ethyl acetate extract from Panzeria alaschanica. METHODS: The chemical constituents of ethyl acetate extract from Panzeria alaschanica were isolated and purified by silica gel. Their structures were i- dentified by means of spectra. RESULTS: Nine compounds were obtained and identified as 7-Methoxy coumarin (1), Isorhamnetin (2), Caf- feic acid (3), 5-Hydroxy-7,3',4'-trimethoxyflavone (4), 5-Hydroxy-7,4'-dimethoxyflavone (5),Kaempferol (6), Isorhamnetin-3-O-β-D- glucoside (7) Kaempferol-3-O-β-D-glucoside (8), and Isorhamnetin-7-O-β-D-glucuronyl-(1-->6)-O-α-L-rhamnoside (9). CONCLUSION: Compounds 1-4,6,7 and 9 are isolated from this plant for the first time.
Key concepts: Isorhamnetin, Kaempferol, Chemistry, Ethyl acetate, Coumarin, Chemical constituents, Silica gel, Chromatography