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- Title
Expanding the Repertoire of Spongian-16-One Derivatives in Australian Nudibranchs of the Genus Goniobranchus and Evaluation of Their Anatomical Distribution.
- Authors
Forster, Louise C.; Clegg, Jack K.; Cheney, Karen L.; Garson, Mary J.
- Abstract
Extracts of the mantle and viscera of the Indo-Pacific nudibranchs Goniobranchus aureopurpureus and Goniobranchus sp. 1 afforded 11 new diterpenoids (1–11), all of which possess a tetracyclic spongian-16-one scaffold with extensive oxidation at C-6, C-7, C-11, C-12, C-13, and/or C-20. The structures and relative configuration were investigated by NMR experiments, while X-ray crystallography provided the absolute configuration of 1, including a 2′S configuration for the 2-methylbutanoate substituent located at C-7. Dissection of animal tissue revealed that the mantle and viscera tissues differed in their metabolite composition with diterpenes 1–11 present in the mantle tissue of the two nudibranch species.
- Subjects
NUDIBRANCHIA; X-ray crystallography; DITERPENES; VISCERA
- Publication
Marine Drugs, 2021, Vol 19, Issue 12, p680
- ISSN
1660-3397
- Publication type
Article
- DOI
10.3390/md19120680