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  • Title: Cyclobutenbriarein A, the first diterpene with a tricyclo[8.4.0.0(3,6)]tetradec-4-ene ring system isolated from the Gorgonian Briareum asbestinum.
    Author: González N, Rodríguez J, Kerr RG, Jiménez C.
    Journal: J Org Chem; 2002 Jul 26; 67(15):5117-23. PubMed ID: 12126395.
    Abstract:
    Cyclobutenbriarein A (2), a novel class of C20-rearranged diterpene briarane possessing an unprecedented tricyclo[8.4.0.0(3,6)]tetradec-4-ene ring system was isolated, along with five new briarane diterpenoids (1 and 3-6), from the organic extracts of the Bahamian gorgonian Briareum asbestinum. The structures of these secondary metabolites were established on the basis of extensive NMR studies and accurate mass measurements (HRFABMS).
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