New formylated phloroglucinol compounds from Eucalyptus globulus foliage

Abstract : Two new acylphloroglucinols were isolated from the leaves of Eucalyptus globulus Labill and identified as macrocarpals P (1) and Q (2). Structural elucidations were carried out using conventional 1D and 2D NMR and mass spectrometry together with complementary techniques (UV and IR). Macrocarpal Q was a diastereoisomer of macrocarpal E (3), configuration of which was not precised. Simultaneous isolation of macrocarpals E and Q allowed to determine the configurations of both compounds. The diformylphloroglucinol (4) was also isolated as well as already known compounds grandinol, macrocarpals D, I, L, N, O and am-1.
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Submitted on : Tuesday, November 17, 2015 - 5:11:15 PM
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Sophie Chenavas, Christel Fiorini-Puybaret, Philippe Joulia, Camille Larrouquet, Hugues Waton, et al.. New formylated phloroglucinol compounds from Eucalyptus globulus foliage. Phytochemistry Letters, Elsevier, 2015, 11, pp.69-73. ⟨10.1016/j.phytol.2014.11.002⟩. ⟨hal-01230089⟩



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