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- Increase of leishmanicidal and tubercular activities using steroids linked to aminoquinoline
- Universidade Federal de Juiz de Fora (UFJF)
- Universidade Estadual Paulista (UNESP)
- Institut de Chimie des Substances Naturelles
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Bolsas de Iniciação Científica (BIC/UFJF)
- Background: Aminoquinoline/steroid conjugates were synthesized based on the fact that steroid transporters have been shown to accept and carry a variety of drugs. So, in continuing our research of antileishmanial and antitubercular drugs, aminoquinoline/steroid conjugates (12, 13, and 14) were regioselectively synthesized via 1, 3-dipolar cycloaddition of alkynes 3, 5, and 7 with azide 12. The aminoquinoline/steroids conjugates were evaluated in vitro against Leishmania major and Mycobacterium tuberculosis. Results: Regioselective synthesis of the novel aminoquinoline/steroid conjugates was achieved in very high yield. All aminoquinoline/steroid conjugates (12, 13, and 14) exhibited best results against Leishmania and M. tuberculosis than the respective alkyne intermediate structures (3, 5, and 7, respectively). Among them, the compound 12 exhibited the best activity for M. tuberculosis (MIC = 8.8 μM). This result is comparable to drugs commonly used in tuberculosis treatment. Also, for antileishmanial assay, the aminoquinoline/steroid conjugates demonstrated a significant activity against promastigote and amastigote forms of L. major. Conclusions: Addition of a steroid group to aminoquinoline molecules enhanced the leishmanicidal and antitubercular activities. These results highlight the importance of steroids as carrier.
- Organic and Medicinal Chemistry Letters, v. 2, n. 16, p. 1-8, 2012.
- Antileishmanial drugs
- Antituberculosis drugs
- Click chemistry
- Acesso aberto
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