Abstract:
:A new series of 5-(1-aryl-3-methyl-1H-pyrazol-4-yl)-1H-tetrazole derivatives (4a-m) and their precursor 1-aryl-3-methyl-1H-pyrazole-4-carbonitriles (3a-m) were synthesized and evaluated as antileishmanials against Leishmania braziliensis and Leishmania amazonensis promastigotes in vitro. In parallel, the cytotoxicity of these compounds was evaluated on the RAW 264.7 cell line. The results showed that among the assayed compounds the substituted 3-chlorophenyl (4a) (IC50/24h=15±0.14 μM) and 3,4-dichlorophenyl tetrazoles (4d) (IC50/24h=26±0.09 μM) were the most potent against L. braziliensis promastigotes, as compared the reference drug pentamidine, which presented IC50=13±0.04 μM. In addition, 4a and 4d derivatives were less cytotoxic than pentamidine. However, these tetrazole derivatives (4) and pyrazole-4-carbonitriles precursors (3) differ against each of the tested species and were more effective against L.braziliensis than on L. amazonensis.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Faria JV,dos Santos MS,Bernardino AM,Becker KM,Machado GM,Rodrigues RF,Canto-Cavalheiro MM,Leon LLdoi
10.1016/j.bmcl.2013.09.062subject
Has Abstractpub_date
2013-12-01 00:00:00pages
6310-2issue
23eissn
0960-894Xissn
1464-3405pii
S0960-894X(13)01136-0journal_volume
23pub_type
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