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Structural characterization of naphthalene sulfonamides and a sulfonate ester and theirin vitroefficacy againstLeishmania tarentolaepromastigotes

New Journal of Chemistry, ISSN: 1369-9261, Vol: 45, Issue: 10, Page: 4791-4801
2021
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Article Description

Leishmaniasis, a parasitic infectious disease transmitted by sandfly bites, is an extremely complex human and veterinary disease. In humans, it takes different forms ranging from self-healing cutaneous ulcers to severe, life-threatening visceral infections. Current treatments primarily rely on chemotherapies. The current chemotherapeutic drugs, developed decades ago, are costly, toxic, and have become problematic due to drug resistance. To this end, two naphthalene sulfonamides and one naphthalene sulfonate ester were subjected to a structure-activity relationship (SAR) study for inhibition ofLeishmania. The new chlorosulfonamide,N-(2′-chlorophenyl)-1-naphthalene sulfonamide (B), and sulfonate ester, 3-methyl-4-((naphthalen-1-ylsulfonyl)oxy)benzoic acid achieved (C) ICvalues of 9.5 μM and 7.4 μM, respectively, againstLeishmania tarentolaepromastigotesin vitro, which are notably lower than the ICvalue of 49 μM for our benchmark compound,N-(4′-carboxy-2′-methylphenyl)-1-napthalenesulfonamide (A). Additionally, all three compounds were analyzed by X-ray crystallography and show strong intermolecular interactions in the crystalline state. The new findings from this SAR study open new directions for advanced leishmaniasis treatment.

Bibliographic Details

Edward W. Li; Jade Katinas; Marjorie A. Jones; Christopher G. Hamaker

Royal Society of Chemistry (RSC)

Chemical Engineering; Chemistry; Materials Science

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