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Pipecolisporin, a Novel Cyclic Peptide with Antimalarial and Antitrypanosome Activities from a Wheat Endophytic Nigrospora oryzae.

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Date

2021-03-16

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Fernández-Pastor, Ignacio
González-Menéndez, Victor
Annang, Frederick
Toro, Clara
Mackenzie, Thomas A
Bosch-Navarrete, Cristina
Genilloud, Olga
Reyes, Fernando

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Abstract

A novel cyclic antimalarial and antitrypanosome hexapeptide, pipecolisporin (1), was isolated from cultures of Nigrospora oryzae CF-298113, a fungal endophyte isolated from roots of Triticum sp. collected in a traditional agricultural land of Montefrío, Granada, Spain. The structure of this compound, including its absolute configuration, was elucidated by HRMS, 1-D and 2-D NMR spectroscopy, and Marfey's analysis. This metabolite displayed interesting activity against Plasmodium falciparum and Trypanosoma cruzi, with IC50 values in the micromolar range, and no significant cytotoxicity against the human cancer cell lines A549, A2058, MCF7, MIA PaCa-2, and HepG2.

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Marfey’s analysis, Nigrospora oryzae, antiparasitic activity, fungal endophyte, pipecolisporin, structural elucidation

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