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  • Title: Further galphimines from a new population of Galphimia glauca.
    Author: Ortega A, Pastor-Palacios G, Ortiz-Pastrana N, Ávila-Cabezas E, Toscano RA, Joseph-Nathan P, Morales-Jiménez J, Bautista E.
    Journal: Phytochemistry; 2020 Jan; 169():112180. PubMed ID: 31634725.
    Abstract:
    Both DNA barcoding and phylogenetic data of the studied botanical material suggested the existence a new population of Galphimia glauca. Their leaves afforded three new nor-3,4-seco-friedelanes named galphimines M-O, together with known galphimines D, E, G, and I. Galphimines M and N possess bicyclic orthoacetates which are the first examples of orthoesters found in the Malpighiaceae family, while galphimine O has a 27,20-δ-lactone moiety. The structures elucidation followed from spectroscopic means and the absolute configuration followed from single crystal X-ray diffraction analyses. Tests for antibacterial and antifungal activities of galphimines N and M showed no promising effects.
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