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Chemical constituents from the Algerian ash Fraxinus dimorpha Coss. & Dur. and their chemotaxonomic significance
(PERGAMON-ELSEVIER SCIENCE LTD, 2025-03-21) Bouhentala, Sabrine; Chabani, Sonia; Benkhaled, Mohammed; Haba, Hamada
The investigation of the chemical composition of n-hexane and ethyl acetate extracts from the aerial parts of Fraxinus dimorpha resulted in the isolation of a new compound (1), identified as a fatty acid ester, along with fifteen previously reported secondary metabolites (2–16). These included one fatty acid (2), four triterpenoids (3–6), two phytosterols (7 and 8), three coumarins (9–11), one phenylpropanoid glucoside (12), three secoiridoids (13–15), and one free sugar (16). Among them, undecanoic acid (2), oleanolic acid acetate (4), lupeol (5) and lupenone (6) were identified for the first time within the Fraxinus genus. The structures of isolated compounds (1–16) were elucidated through extensive spectroscopic analyses such as 1D- and 2D-NMR and HR-ESI-MS as well as by comparing experimental data with those reported in the literature. Additionally, the chemotaxonomic significance of the isolated bioactive compounds was discussed.