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Planta Med 1985; 51(1): 42-46
DOI: 10.1055/s-2007-969389
Research Articles

© Georg Thieme Verlag Stuttgart · New York

Antibiotics from Algae XXXIII[1]: Phlorotannins of the Brown Alga Himanthalia elongata [2] , [3]

K.-W. Glombitza, J. Große-Damhues
  • Institut für Pharmazeutische Biologie, Universität Bonn, Nußallee 6, D-5300 Bonn 1, West Germany
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Publication History

1984

1984

Publication Date:
26 February 2007 (online)

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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) Bonn

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) Bonn