title: Antileishmanial and antibacterial activity of a new pyrazole derivative designated 4-[2-(1-(ethylamino)-2-methyl- propyl)phenyl]-3-(4-methyphenyl)-1-phenylpyrazole.
abstract: Here, we report for the first time the synthesis and the antileishmanial activity of a new pyrazole derivative, namely 4-[2-(1-(ethylamino)-2-methylpropyl)phenyl]-3-(4-methyphenyl)-1-phenylpyrazole). Micromolar concentrations of this compound were found to inhibit the in vitro multiplication of Leishmania tropica, Leishmania major, and Leishmania infantum, three species causing different forms of leishmaniasis. Furthermore, the 50% inhibitory concentration (IC50) values for the compound are only slightly higher than those of amphotericin B, one of the most active antileishmanial agents used as a satisfactory substitute in cases not responding to pentostam. The IC50 values after 48 h for L. tropica, L. major, and L. infantum promastigote growth were 0.48 microg/mL, 0.63 microg/mL and 0.40 microg/mL, respectively for the compound, while they were 0.23 microg/mL, 0.29 microg/mL and 0.24 microg/mL, respectively for amphotericin B. We also tested this compound for its antibacterial activity against several bacteria. The strongest antibacterial activity was observed against Entrococcus feacalis and Staphylococcus aureus with a minimal inhibitory concentration (MIC) of 60 microg/mL.
authors.affiliation: Laboratoire de Microbiologie et Biologie Moléculaire, Département de Biologie, Faculté des Sciences Ben M'sik-Casablanca, Université Hassan Il-Mohammedia, Casablanca, Morocco. dzainaba@yahoo.fr
authors.forename: Zainaba
authors.initials: Z
authors.lastname: Dardari
authors.forename: Meryem
authors.initials: M
authors.lastname: Lemrani
authors.forename: Abdelfatah
authors.initials: A
authors.lastname: Sebban
authors.forename: Abdelmejid
authors.initials: A
authors.lastname: Bahloul
authors.forename: Mohammed
authors.initials: M
authors.lastname: Hassar
authors.forename: Said
authors.initials: S
authors.lastname: Kitane
authors.forename: Mohammed
authors.initials: M
authors.lastname: Berrada
authors.forename: Mohammed
authors.initials: M
authors.lastname: Boudouma
mesh_terms: D000666:Amphotericin B / Q000494:pharmacology; D000818:Animals; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000494:pharmacology*; D000981:Antiprotozoal Agents / Q000138:chemical synthesis / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D013293:Enterococcus faecalis / Q000187:drug effects / Q000254:growth & development; D005021:Ethylamines / Q000138:chemical synthesis / Q000494:pharmacology*; D018314:Leishmania infantum / Q000187:drug effects / Q000254:growth & development; D018320:Leishmania major / Q000187:drug effects / Q000254:growth & development; D007895:Leishmania tropica / Q000187:drug effects / Q000254:growth & development; D008826:Microbial Sensitivity Tests; D011720:Pyrazoles / Q000138:chemical synthesis / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development
chemical_list: C512134:4-(2-(1-(ethylamino)-2-methyl- propyl)phenyl)-3-(4-methyphenyl)-1-phenylpyrazole; D000900:Anti-Bacterial Agents; D000981:Antiprotozoal Agents; D005021:Ethylamines; D011720:Pyrazoles; D000666:Amphotericin B