Secondary Metabolites from the Marine Alga Caulerpa brownii (Chlorophyta)

Jackie T. Handley; Adrian J. Blackman

doi:10.1071/CH04174

RESEARCH ARTICLE

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Secondary Metabolites from the Marine Alga Caulerpa brownii (Chlorophyta)

Jackie T. Handley ^A and Adrian J. Blackman ^A ^B

+ Author Affiliations

- Author Affiliations

^A School of Chemistry, University of Tasmania, Hobart TAS 7001, Australia.

^B Corresponding author. Email: adrian.blackman@utas.edu.au

Australian Journal of Chemistry 58(1) 39-46 https://doi.org/10.1071/CH04174
Submitted: 9 August 2004 Accepted: 18 November 2004 Published: 14 January 2005

Abstract

The green seaweed Caulerpa brownii (Chlorophyta, Caulerpaceae) occurs in Tasmania in two morphological forms (branched and unbranched) and each form has a different profile of diterpenoid secondary metabolites. Unbranched specimens gave rise to the novel secondary metabolites 11, 13, 14, 17, and 18, the secondary metabolite 8 that has been isolated for the first time as a natural product, as well as the known compounds 1 and 3–7. Branched specimens of C. brownii yielded the novel terpenoid esters 21 and the known compounds 1 and 2.

Acknowledgments

We thank Dr Evan Peacock (University of Tasmania) for his assistance in obtaining HMBC, HMQC, and NOESY NMR spectroscopic data; Dr Noel Davies (University of Tasmania) for the determination of MS and LC-MS data; Martin Hitchman, and Christian Narkowicz for collection of algal samples; and the Australian Research Council (ARC) for financial support (Australian Postgraduate Award for J.H. and ARC Small Grant).

References

Secondary Metabolites from the Marine Alga Caulerpa brownii (Chlorophyta)

Abstract

Acknowledgments

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