Trihydroxyphlorethols from the brown alga Carpophyllum angustifolium |
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| Affiliation: | 1. Environment & Cleaner Production Institute, Marmara Research Center-TUBITAK, Gebze, Kocaeli, Turkey;2. Istanbul University, Institute of Marine Science and Management, Department of Chemical Oceanography, Vefa, 34134 Istanbul, Turkey;1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;2. Key Laboratory of Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, China;3. Food Technology Department, Faculty of Agriculture,13736, Moshtohor, Benha University, Egypt |
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| Abstract: | The structural elucidation of four phloroglucinol derivatives isolated from the ethanolic extract of the brown alga Carpophyllum angustifolium after peracetylation is described. Three of them, trihydroxyheptaphlorethol-A octadecaacetate, trihydroxyoctaphlorethol-A eicosaacetate and trihydroxyoctaphlorethol-B eicosaacetate, are described for the first time. Characterized by three additional hydroxyl groups and two 1,2-diphenoxylated 3,4,5-triacetoxybenzene rings directly linked by an ether bond they are called trihydroxyphlorethols as a novel group of phlorotannins. The structural elucidation was carried out on the basis of spectral data. |
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