Abstract
Three new tetracyclic triterpenoids namely, integracides H (1), I (4), and J (5), along with integracides B (3) and F (2) have been isolated from the endophytic fungus Fusarium sp. isolated from the roots of Mentha longifolia L. (Labiatae) growing in Saudi Arabia. The structure elucidation of the isolated compounds was achieved by spectroscopic analysis including UV, IR, 1D (1H and 13C) and 2D (1H1H COSY, TOCSY, HSQC, HMBC, and NOESY) NMR as well as HRESIMS and comparison with literature data. Integracides H (1) and J (5) showed significant anti-leishmanial activity towards Leishmania donovani with IC50 values of 4.75 and 3.29μM, respectively compared to pentamidine (IC50 6.35μM). Moreover, they displayed potent cytotoxic activity towards BT-549, SKOV-3, and KB cell lines with IC50 values of 1.82, 1.32, and 0.18μM and 2.46, 3.01, and 2.54μM, respectively.
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