Crystal structure of two natural polyprenylated benzophenones from the Brazilian Cerrado, including a new natural product
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2017
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The elucidation of the complex structure of a new benzophenone named goianone (1) was achieved through single-crystal X-ray diffraction, 1H and 13C NMR and ESI(+)-MS/MS data. Crystal structure of the known propolone A (2) was also determined for the first time here. Both compounds were isolated from floral resin and fruits extracts of Clusia rosea harvested in the Brazilian Cerrado. Compound 1 has a substituted homo-adamantyl ketone core with two seven-membered cycles and an additional spirofused seven-membered ring containing a peroxide bond. Its crystal structure represents the first crystallographic report of its complex pentacyclic core as well as the first report of a crystal structure of a peroxide prenylated benzophenone. Its pentacyclic structure is formed with two six-membered rings and three seven-membered rings. To date, this is only the second crystal structure report for a molecule bearing the lavandulyl moiety.
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NOVAIS, Celice et al. Crystal structure of two natural polyprenylated benzophenones from the Brazilian Cerrado, including a new natural product. Chemical Data Collections, Amsterdam, v. 9/10, p. 24-34, 2017. DOI: 10.1016/j.cdc.2017.03.001. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S2405830016301033?via%3Dihub. Acesso em: 28 jun. 2023.