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Abstract:

As a part of our project directed at the search of new chemotherapeutic agents against American trypanosomiasis (Chagas' disease), several drugs possessing the 4-phenoxyphenoxy skeleton and other closely related structures employing the thiocyanate moiety as polar end group were designed, synthesized, and evaluated as antiproliferative agents against Trypanosoma cruzi, the parasite responsible for this disease. These thiocyanate analogues were envisioned bearing in mind the potent activity shown by 4- phenoxyphenoxyethyl thiocyanate (compound 8) taken as lead drug. This compound had previously proved to be an extremely active growth inhibitor against T. cruzi with IC50 values ranging from the very low micromolar level in epimastigotes to the low nanomolar level in the intracellular form of the parasite. Of the designed compounds, the ethyl thiocyanate drugs connected to nonpolar skeletons, namely, arylthio, 2,4-dichlorophenoxy, ortho-substituted aryloxy, and 2-methyl-4-phenoxyphenoxy (compounds 15, 34, 47, 52, 72, respectively), were shown to be very potent antireplicative agents against T. cruzi. On the other hand, conformationally restricted analogues as well as branched derivatives at the aliphatic side chain were shown to be moderately active against T. cruzi growth. The biological activity of drugs bearing the thiocyanate group correlated quite well with the activity exhibited by their normal precursors, the tetrahydropyranyl ether derivatives, when bonded to the same nonpolar skeleton. Compounds having the tetrahydropyranyl moiety as polar end were proportionally much less active than sulfur-containing derivatives in all cases. Drugs 47 and 72 also resulted to be very active against the amastigote form of the parasite growing in myoblasts; however, they were slightly less active than the lead drug 8. On the other hand, compounds 34 and 52 were almost devoid of activity against myoblasts. Surprisingly, the dithio derivative 15 was toxic for myoblasts.

Registro:

Documento: Artículo
Título:Design and synthesis of aryloxyethyl thiocyanate derivatives as potent inhibitors of Trypanosoma cruzi proliferation
Autor:Szajnman, S.H.; Yan, W.; Bailey, B.N.; Docampo, R.; Elhalem, E.; Rodriguez, J.B.
Filiación:Depto. de Quim. Orgánica, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, RA-1428 Buenos Aires, Argentina
Laboratory of Molecular Parasitology, Department of Pathobiology, Univ. Illinois at Urbana-Champaign, 2001 South Lincoln Avenue, Urbana, IL 61802, United States
Palabras clave:2 (4 phenoxyphenylthio)ethyl thiocyanic acid; 2 bromo 4 phenoxyphenoxyethyl thiocyanic acid; 2 iodo 4 phenoxyphenoxyethyl 4 thiocyanic acid; 2,4 dichlorophenoxyethyl thiocyanic acid; 4 (2 methylphenoxy)phenoxyethyl thiocyanic acid; antiprotozoal agent; thiocyanic acid derivative; unclassified drug; antiprotozoal activity; article; Chagas disease; drug potency; drug synthesis; growth inhibition; nonhuman; Trypanosoma; Trypanosoma cruzi; trypanosomiasis; Animals; Cell Division; Drug Design; Indicators and Reagents; Magnetic Resonance Spectroscopy; Mass Spectrometry; Spectrophotometry, Ultraviolet; Structure-Activity Relationship; Thiocyanates; Trypanocidal Agents; Trypanosoma cruzi
Año:2000
Volumen:43
Número:9
Página de inicio:1826
Página de fin:1840
DOI: http://dx.doi.org/10.1021/jm9905007
Título revista:Journal of Medicinal Chemistry
Título revista abreviado:J. Med. Chem.
ISSN:00222623
CODEN:JMCMA
CAS:Indicators and Reagents; Thiocyanates; Trypanocidal Agents
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222623_v43_n9_p1826_Szajnman

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Citas:

---------- APA ----------
Szajnman, S.H., Yan, W., Bailey, B.N., Docampo, R., Elhalem, E. & Rodriguez, J.B. (2000) . Design and synthesis of aryloxyethyl thiocyanate derivatives as potent inhibitors of Trypanosoma cruzi proliferation. Journal of Medicinal Chemistry, 43(9), 1826-1840.
http://dx.doi.org/10.1021/jm9905007
---------- CHICAGO ----------
Szajnman, S.H., Yan, W., Bailey, B.N., Docampo, R., Elhalem, E., Rodriguez, J.B. "Design and synthesis of aryloxyethyl thiocyanate derivatives as potent inhibitors of Trypanosoma cruzi proliferation" . Journal of Medicinal Chemistry 43, no. 9 (2000) : 1826-1840.
http://dx.doi.org/10.1021/jm9905007
---------- MLA ----------
Szajnman, S.H., Yan, W., Bailey, B.N., Docampo, R., Elhalem, E., Rodriguez, J.B. "Design and synthesis of aryloxyethyl thiocyanate derivatives as potent inhibitors of Trypanosoma cruzi proliferation" . Journal of Medicinal Chemistry, vol. 43, no. 9, 2000, pp. 1826-1840.
http://dx.doi.org/10.1021/jm9905007
---------- VANCOUVER ----------
Szajnman, S.H., Yan, W., Bailey, B.N., Docampo, R., Elhalem, E., Rodriguez, J.B. Design and synthesis of aryloxyethyl thiocyanate derivatives as potent inhibitors of Trypanosoma cruzi proliferation. J. Med. Chem. 2000;43(9):1826-1840.
http://dx.doi.org/10.1021/jm9905007