Antibiotics from Algae XXXIII: Phlorotannins of the Brown AlgaHimanthalia elongata,
- 26 February 1985
- journal article
- research article
- Published by Georg Thieme Verlag KG in Planta Medica
- Vol. 51 (01) , 42-46
- https://doi.org/10.1055/s-2007-969389
Abstract
It is possible to obtain approximately 0.2% (relative to dry weight) phenols soluble in ethyl acetate from Himanthalia elongata. After removal of a fraction containing high-molecular weight substances, a total of 17 oligomeric phlorotannins with 2 to 8 aromatic rings can be isolated from the mixture of the acetylated phenol fraction. Apart from 2 derivatives belonging to the fucol group, diphlorethol and a tetraphlorethol not yet fully identified, all the other substances are fucophlorethols. Amongst these substances, a phenoxylated therphenyl derivative and several fucophlorethols with two-fold phenoxy-substituted biphenyl moieties were identified for the first time. 1 For Part XXXII see: Ref.(11) 2 dedicated to Prof. Dr.M. Steiner on his 80th birthday 3 Part of dissertation Große-Damhues (1983) BonnKeywords
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