Piceatannol derivatives from Rheum austral D. Don and their chemotaxonomic significance |
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| Affiliation: | 1. Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan University of Nationalities, Kunming, Yunnan 650031, PR China;2. Kunming Xianghao Technology Co., Ltd., Kunming, Yunnan 650204, PR China;3. Department of Plant Resources Utilization, School of Forestry, Southwest Forestry University, Kunming, Yunnan 650224, PR China;1. College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Pratacultural Engineering Laboratory of Gansu Province, Sino-U. S. Centers for Grazing Land Ecosystem Sustainability, Gansu Agricultural University, Lanzhou 730070, PR China;2. Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, PR China;3. Institute of Natural and Mathematical Sciences, Massey University, Private Bag 102 904 North Shore Mail Centre 0632, Auckland, New Zealand;4. Ecological Genetics Laboratory, Landcare Research, Private Bag 92170, Auckland, New Zealand;5. Institute for Applied Ecology, University of Canberra, Bruce ACT 2601, Australia;1. Department of Ornamental Horticulture, School of Landscape Architecture, Zhejiang Agriculture and Forestry University, 311300 Lin''an, Hangzhou, China;2. Nurturing Station for State Key Laboratory of Subtropical Silviculture, 311300 Lin''an, Hangzhou, China;1. Institute of Applied Physics, TU Wien, 1040 Vienna, Austria;2. CEITEC BUT, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic;3. Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic |
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| Abstract: | This paper reports the isolation and characterization of seven piceatannol derivatives (1–7), including two new compounds (4 and 6), along with resveratrol (8) and polydatin (9), from the underground parts of Rheum austral D. Don collected from Tibet. The structures of the isolates were identified based on analysis of their spectroscopic data and comparison with literature. Compounds 3–7, piceatannol-4′-O-glucopyranoside and its 6″-O-acylated derivatives reported in this study may be useful chemotaxonomic markers for R. austral collected from Tibet. |
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| Keywords: | Polygonaceae Piceatannol derivatives Chemotaxonomy |
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