Antibiotica aus algen—XVI : Polyhydroxyphenyläther aus der phaeophycee Halidrys siliquosa |
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Authors: | E Sattler K-W Glombitza FW Wehrli G Eckhardt |
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Institution: | Institut für Pharmazeutische Biologie der Universität Bonn, BR Deutschland;Varian A.G , NMR Applications Laboratory, Zug, Schweiz, Deutschland;Institut für Organische Chemie und Biochemie Bonn, BRD |
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Abstract: | With the aid of preparative layer chromatography several compounds could be isolated from a mixture of acetylated phenols obtained from Halidrys siliquosa (L.) Lyngbye. Peracetylated heptafuhalol as well as its deacetylpermethyl derivative were examined by MS, IR, 1H NMR and 13C NMR methods. Other constituents are probably lower members of a homologous series with 6, 5 and 4 phloroglucinol nuclei, respectively. The established building principle is also valid for a “high molecular mass polymer” fraction of acetylated phenols from Halidrys. The free phenols have the properties of tannins, and will be denoted phlorotannins. |
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