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DOI: 10.1055/s-2007-969389
© Georg Thieme Verlag Stuttgart · New York
Antibiotics from Algae XXXIII[1]: Phlorotannins of the Brown Alga Himanthalia elongata [2] , [3]
Publication History
1984
1984
Publication Date:
26 February 2007 (online)
![](https://www.thieme-connect.de/media/plantamedica/198501/lookinside/thumbnails/10.1055-s-2007-969389-1.jpg)
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
1 For Part XXXII see: Ref.(11)
2 dedicated to Prof. Dr.M. Steiner on his 80th birthday