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  • Title: Briaexcavatolides K-N, new briarane diterpenes from the gorgonian Briareum excavatum.
    Author: Sung PJ, Su JH, Duh CY, Chiang MY, Sheu JH.
    Journal: J Nat Prod; 2001 Mar; 64(3):318-23. PubMed ID: 11277747.
    Abstract:
    Four new briarane diterpenes, briaexcavatolides K-N (1-4), along with a known diterpene, 5, have been isolated from the Taiwanese gorgonian Briareum excavatum. The structures of the new metabolites were established by extensive spectral analyses. Furthermore, the structure, including the relative configuration of briaexcavatolide K (1), was confirmed by a single-crystal X-ray analysis. Briaexcavatolides K and L (1 and 2) are the only briarane diterpenes known to possess hydroxyl groups at the C-8beta and C-17alpha positions, respectively. Cytotoxicity of these metabolites toward various cancer cell lines also is described.
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