Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>

The development of novel pharmaceutical tools to efficiently tackle tuberculosis is the order of the day due to the rapid development of resistant strains of <i>Mycobacterium tuberculosis</i>. Herein, we report novel potential formulations of a repurposed drug, the antimalarial mefloquin...

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Main Authors: Dário Silva, Márcio V. C. Lopes, Željko Petrovski, Miguel M. Santos, Jussevania P. Santos, Sueli F. Yamada-Ogatta, Marcelle L. F. Bispo, Marcus V. N. de Souza, Ana Rita C. Duarte, Maria C. S. Lourenço, Raoni Schroeder B. Gonçalves, Luis C. Branco
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Molecules
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Online Access:https://www.mdpi.com/1420-3049/27/16/5167
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author Dário Silva
Márcio V. C. Lopes
Željko Petrovski
Miguel M. Santos
Jussevania P. Santos
Sueli F. Yamada-Ogatta
Marcelle L. F. Bispo
Marcus V. N. de Souza
Ana Rita C. Duarte
Maria C. S. Lourenço
Raoni Schroeder B. Gonçalves
Luis C. Branco
author_facet Dário Silva
Márcio V. C. Lopes
Željko Petrovski
Miguel M. Santos
Jussevania P. Santos
Sueli F. Yamada-Ogatta
Marcelle L. F. Bispo
Marcus V. N. de Souza
Ana Rita C. Duarte
Maria C. S. Lourenço
Raoni Schroeder B. Gonçalves
Luis C. Branco
author_sort Dário Silva
collection DOAJ
description The development of novel pharmaceutical tools to efficiently tackle tuberculosis is the order of the day due to the rapid development of resistant strains of <i>Mycobacterium tuberculosis</i>. Herein, we report novel potential formulations of a repurposed drug, the antimalarial mefloquine (MFL), which was combined with organic anions as chemical adjuvants. Eight mefloquine organic salts were obtained by ion metathesis reaction between mefloquine hydrochloride ([MFLH][Cl]) and several organic acid sodium salts in high yields. One of the salts, mefloquine mesylate ([MFLH][MsO]), presented increased water solubility in comparison with [MFLH][Cl]. Moreover, all salts with the exception of mefloquine docusate ([MFLH][AOT]) showed improved permeability and diffusion through synthetic membranes. Finally, in vitro activity studies against <i>Mycobacterium tuberculosis</i> revealed that these ionic formulations exhibited up to 1.5-times lower MIC values when compared with [MFLH][Cl], particularly mefloquine camphorsulfonates ([MFLH][(1<i>R</i>)-CSA], [MFLH][(1<i>S</i>)-CSA]) and mefloquine HEPES ([MFLH][HEPES]).
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spelling doaj.art-a6a4378ca57e49f6ae1230e45fe18e102023-12-03T14:11:18ZengMDPI AGMolecules1420-30492022-08-012716516710.3390/molecules27165167Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>Dário Silva0Márcio V. C. Lopes1Željko Petrovski2Miguel M. Santos3Jussevania P. Santos4Sueli F. Yamada-Ogatta5Marcelle L. F. Bispo6Marcus V. N. de Souza7Ana Rita C. Duarte8Maria C. S. Lourenço9Raoni Schroeder B. Gonçalves10Luis C. Branco11LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, 2829-516 Caparica, PortugalInstituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149, Cidade Universitaria, Rio de Janeiro 21941-909, BrazilLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, 2829-516 Caparica, PortugalLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, 2829-516 Caparica, PortugalDepartamento de Microbiologia, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid (PR 445), Km 380, Campus Universitário, Londrina 86057-970, BrazilDepartamento de Microbiologia, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid (PR 445), Km 380, Campus Universitário, Londrina 86057-970, BrazilDepartamento de Microbiologia, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid (PR 445), Km 380, Campus Universitário, Londrina 86057-970, BrazilFioCruz-Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far-Manguinhos, Rua Sizenando Nabuco, 100, Manguinhos, Rio de Janeiro 21041-250, BrazilLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, 2829-516 Caparica, PortugalInstituto de Pesquisas Clínica Evandro Chagas—IPEC, Av. Brasil, 4365, Manguinhos, Rio de Janeiro 21040-900, BrazilInstituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149, Cidade Universitaria, Rio de Janeiro 21941-909, BrazilLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, 2829-516 Caparica, PortugalThe development of novel pharmaceutical tools to efficiently tackle tuberculosis is the order of the day due to the rapid development of resistant strains of <i>Mycobacterium tuberculosis</i>. Herein, we report novel potential formulations of a repurposed drug, the antimalarial mefloquine (MFL), which was combined with organic anions as chemical adjuvants. Eight mefloquine organic salts were obtained by ion metathesis reaction between mefloquine hydrochloride ([MFLH][Cl]) and several organic acid sodium salts in high yields. One of the salts, mefloquine mesylate ([MFLH][MsO]), presented increased water solubility in comparison with [MFLH][Cl]. Moreover, all salts with the exception of mefloquine docusate ([MFLH][AOT]) showed improved permeability and diffusion through synthetic membranes. Finally, in vitro activity studies against <i>Mycobacterium tuberculosis</i> revealed that these ionic formulations exhibited up to 1.5-times lower MIC values when compared with [MFLH][Cl], particularly mefloquine camphorsulfonates ([MFLH][(1<i>R</i>)-CSA], [MFLH][(1<i>S</i>)-CSA]) and mefloquine HEPES ([MFLH][HEPES]).https://www.mdpi.com/1420-3049/27/16/5167API-OSILsionic liquidsmefloquinepolymorphismtuberculosis
spellingShingle Dário Silva
Márcio V. C. Lopes
Željko Petrovski
Miguel M. Santos
Jussevania P. Santos
Sueli F. Yamada-Ogatta
Marcelle L. F. Bispo
Marcus V. N. de Souza
Ana Rita C. Duarte
Maria C. S. Lourenço
Raoni Schroeder B. Gonçalves
Luis C. Branco
Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>
Molecules
API-OSILs
ionic liquids
mefloquine
polymorphism
tuberculosis
title Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>
title_full Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>
title_fullStr Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>
title_full_unstemmed Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>
title_short Novel Organic Salts Based on Mefloquine: Synthesis, Solubility, Permeability, and In Vitro Activity against <i>Mycobacterium tuberculosis</i>
title_sort novel organic salts based on mefloquine synthesis solubility permeability and in vitro activity against i mycobacterium tuberculosis i
topic API-OSILs
ionic liquids
mefloquine
polymorphism
tuberculosis
url https://www.mdpi.com/1420-3049/27/16/5167
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