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  • Title: Meroterpenoids with New Skeletons from Myrtus communis and Structure Revision of Myrtucommulone K.
    Author: Liu C, Ang S, Huang XJ, Tian HY, Deng YY, Zhang DM, Wang Y, Ye WC, Wang L.
    Journal: Org Lett; 2016 Aug 19; 18(16):4004-7. PubMed ID: 27471772.
    Abstract:
    Five sesquiterpene-based meroterpenoids with three kinds of new skeletons [1, 2, 3, (+)-4, and (-)-4] were isolated from the leaves of Myrtus communis. Compound 1 featured a new carbon skeleton with an unprecedented octahydrospiro[bicyclo[7.2.0]undecane-2,2'-chromene] tetracyclic ring system, which possessed two preferred conformations detected by variable-temperature NMR spectroscopy experiments. In addition, the structure of reported myrtucommulone K was revised to be compound 3. The plausible biosynthetic pathways of these meroterpenoids and their cytotoxicities are discussed.
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