Fucols and phlorethols from the brown alga Scytothamnus australis hook. et Harv. (Chnoosporaceae)
Fucols and phlorethols from the brown alga Scytothamnus australis hook. et Harv. (Chnoosporaceae)
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DOI：
10.1515/bot.2003.028
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发表时间：
2003-05-01
期刊：
影响因子：
2.2
通讯作者：
Pauli, K
中科院分区：
文献类型：
--
作者：
Glombitza, KW;Pauli, K
采用高效液相色谱法从褐藻（Scytothamnus australis）乙醇提取物中分离得到8种岩藻酚和2种邻苯二酚。由于其不稳定性，这些物质在分离前被过乙酰化。之前已经对三氟萘乙酸、四氟萘- a -十二乙酸、四氟萘- b -十二乙酸、顺-五氟萘-五乙酸、二苯萘- a -五乙酸和三苯萘- a -七乙酸进行了表征。除了这些物质外，我们还发现了羟基四氟醇- b -三乙酸酯、五氟醇- b -五乙酸酯、顺式、反式五氟醇- a -五乙酸酯和六氟醇- b -十八乙酸酯，这些物质都是首次被描述的。通过H-1 NMR、C-13 NMR、H-1 H-1 ROESY NMR和质谱数据对其结构进行了解析。
Eight fucols and two phlorethols were isolated by HPLC from the ethanolic extract of the brown alga Scytothamnus australis,. Because of their instability the substances were peracetylated before isolation. The phlorotannins trifucolnonaacetate, tetrafucol-A-dodecaacetate, tetrafucol-B-dodecaacetate, cis-pentafucolA-pentadecaacetate, diphlorethol-A-pentaacetate and triphlorethol-A-heptaacetate have been characterized previously. In addition to these substances we found hydroxytetrafucol-B-tridecaacetate, pentafucol-B-pentadecaacetate, cis, trans-pentafucol-A-pentadecaacetate and hexafucol-B-octadecaacetate all of which are described for the first time. The elucidation of their structure was achieved by H-1 NMR, C-13 NMR, H-1 H-1 ROESY NMR and mass spectral data.