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Bromoisoxazoline Alkaloids from the Caribbean Sponge Aplysina insularis Thomas Fendert

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Bromoisoxazoline Alkaloids from the Caribbean Sponge Aplysina insularis

Thomas Fendert

a

, Victor Wray

b

, Rob W. M. van Soest

c

and Peter Proksch

a

a Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Pharmazeutische Biologie, Universität Würzburg, Julius-von-Sachs-Platz 2, D-97082 Würzburg, Germany

b Gesellschaft für Biotechnologische Forschung mbH, Mascheroder Weg 1, D-38124 Braunschweig, Germany

c Instituut voor Systematiek en Populatiebiologie, Zöologisch Museum, P. O. Box 94766, Universiteit van Amsterdam, 1090 GT Amsterdam, The Netherlands

Z. Naturforsch.54 c,246Ð252 (1999); received December 23, 1998/January 22, 1999 Sponges,Aplysina insularis,Bromoisoxazoline Alkaloids, Chemotaxonomy, Structure Elucidation

An investigation ofa specimen ofthe Caribbean spongeAplysina insularisresulted in the isolation offourteen bromoisoxazoline alkaloids (1Ð14), ofwhich 14-oxo-aerophobin-2 (1)*

is a novel derivative. Structure elucidation ofthe compounds have been established from spectral studies and data for1are reported. Constituents2to6and11to14have not been identified sofar inAplysina insularisspecies. The presence ofthe known compounds7to9 inAplysina insularisindicates that their use for chemotaxonomical purposes is questionable.

Reprint requests to Prof. Proksch. Fax: 0931/888-6182, e-mail: proksch@botanik.uni-wuerzburg.de

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