Benzoic acid derivatives from Piper species and their antiparasitic activity

Ninoska Flores, Ignacio A. Jiménez, Alberto Giménez, Grace Ruiz, David Gutiérrez, Genevieve Bourdy, Isabel L. Bazzocchi

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Piper glabratum and P. acutifolium were analyzed for their content of main secondary constituents, affording nine new benzoic acid derivatives (1, 2, 4, 5, 7, and 10-13), in addition to four known compounds (3, 6, 8, and 9). Their structures were elucidated on the basis of spectroscopic data. Riguera ester reactions and optical rotation measurements established the new compounds as racemates. In the search for antiparasitic agents, the compounds were evaluated in vitro against the promastigote forms of Leishmania spp., Trypanosoma cruzi, and Plasmodium falciparum. Among the evaluated compounds, methyl 3,4-dihydroxy-5-(3′-methyl-2′-butenyl)benzoate (7) exhibited leishmanicidal effect (IC50 13.8-18.5 μg/mL) against the three Leishmania strains used, and methyl 3,4-dihydroxy-5-(2-hydroxy-3-methylbutenyl) benzoate (1), methyl 4-hydroxy-3-(2-hydroxy-3-methyl-3-butenyl)benzoate (3), and methyl 3,4-dihydroxy-5-(3-methyl-2-butenyl) benzoate (7) showed significant trypanocidal activity, with IC50 values of 16.4, 15.6, and 18.5 μg/mL, respectively.

Original languageEnglish
Pages (from-to)1538-1543
Number of pages6
JournalJournal of Natural Products
Issue number9
StatePublished - Sep 2008


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