Abstract:
Conformational properties of three novel zidovudine analogs, namely 3′-azido-3′-deoxy-5′-O-isonicotinoylthymidine (AZT-Iso, 2), (-)-trans-(5S,6S)-5-bromo-6, 5′-epoxy-5,6-dihydro-3′-azido-3′-deoxythymidine (3) and (+)-trans-(5R,6R)-5-bromo-6,5′-epoxy-5,6-dihydro-3′- azido-3′-deoxythymidine (4), have been investigated by AM1 calculations and NMR studies, and compared with those of the parent nucleoside (AZT, 1). Based on the results obtained the following correlation may be established, a) AZT and AZT-Iso exhibit a conformational behavior analog to other pyrimidinic nucleosides, displaying a dynamic equilibrium in solution where the two conformers (North and South) undergo a constant transformation. b) Compounds 3 and 4 show a different conformational profile. The estimate of the pseudorotation phase angle reveals the rigid structures of the latter compounds, which do not evidence conformational equilibrium in solution; the azide group being the only group free to rotate. c) Diastereoisomers 3 and 4 exhibit an extra conformational parameter compared with other pyrimidinic nucleosides: the chair or boat conformation in the third ring formed between the sugar and the base. In all cases, a reasonable correlation was obtained between theoretical and NMR spectroscopic data.
Registro:
Documento: |
Artículo
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Título: | Conformational studies of novel antiretroviral analogs of zidovudine |
Autor: | Baumgartner, M.T.; Motura, M.I.; Contreras, R.H.; Pierini, A.B.; Briñón, M.C. |
Filiación: | Depto. de Quimica Organica-INFIQC, Ciudad Universitaria, Universidad Nacional de Cordoba, Córdoba, Argentina Departamento de Farmacia, Ciudad Universitaria, Universidad Nacional de Cordoba, 5000 Córdoba, Argentina Departamento de Física, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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Palabras clave: | AM1 calculations; Antiretroviral analogs; Conformational analysis; NMR studies; Novel AZT derivatives; 3' azido 3' deoxy 5' o isonicotinoylthymidine; 5 bromo 6,5' epoxy 5,6 dihydro 3' azido 3' deoxythymidine; nucleoside; unclassified drug; zidovudine; zidovudine derivative; analytic method; article; calculation; correlation analysis; diastereoisomer; drug conformation; nuclear magnetic resonance; nuclear magnetic resonance spectroscopy; rotation; structure analysis; Anti-Retroviral Agents; Magnetic Resonance Spectroscopy; Molecular Conformation; Zidovudine |
Año: | 2003
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Volumen: | 22
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Número: | 1
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Página de inicio: | 45
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Página de fin: | 62
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DOI: |
http://dx.doi.org/10.1081/NCN-120018622 |
Título revista: | Nucleosides, Nucleotides and Nucleic Acids
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Título revista abreviado: | Nucleosides Nucleotides Nucleic Acids
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ISSN: | 15257770
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CODEN: | NNNAF
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CAS: | zidovudine, 30516-87-1; 3'-azido-3'-deoxy-5'-O-isonicotinoylthymidine; Anti-Retroviral Agents; trans-(5S,6S)-5-bromo-6, 5'-epoxy-5,6-dihydro-3'-azido-3'-deoxythymidine; Zidovudine, 30516-87-1
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15257770_v22_n1_p45_Baumgartner |
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- note
Citas:
---------- APA ----------
Baumgartner, M.T., Motura, M.I., Contreras, R.H., Pierini, A.B. & Briñón, M.C.
(2003)
. Conformational studies of novel antiretroviral analogs of zidovudine. Nucleosides, Nucleotides and Nucleic Acids, 22(1), 45-62.
http://dx.doi.org/10.1081/NCN-120018622---------- CHICAGO ----------
Baumgartner, M.T., Motura, M.I., Contreras, R.H., Pierini, A.B., Briñón, M.C.
"Conformational studies of novel antiretroviral analogs of zidovudine"
. Nucleosides, Nucleotides and Nucleic Acids 22, no. 1
(2003) : 45-62.
http://dx.doi.org/10.1081/NCN-120018622---------- MLA ----------
Baumgartner, M.T., Motura, M.I., Contreras, R.H., Pierini, A.B., Briñón, M.C.
"Conformational studies of novel antiretroviral analogs of zidovudine"
. Nucleosides, Nucleotides and Nucleic Acids, vol. 22, no. 1, 2003, pp. 45-62.
http://dx.doi.org/10.1081/NCN-120018622---------- VANCOUVER ----------
Baumgartner, M.T., Motura, M.I., Contreras, R.H., Pierini, A.B., Briñón, M.C. Conformational studies of novel antiretroviral analogs of zidovudine. Nucleosides Nucleotides Nucleic Acids. 2003;22(1):45-62.
http://dx.doi.org/10.1081/NCN-120018622