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Home / Archives for Jemnitz K

Selective hydroboration of dieneamines. Formation of hydroxyalkylphenothiazines as MDR modulators.

  • Authors: Amaral L, Bombicz P, Egyed O, Hajos G, Jemnitz K, Molnar J, Nagy I, Riedl Z, Takács D
  • Journal: Bioorganic & Medicinal Chemistry
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=Selective+hydroboration+of+dieneamines.+Formation+of+hydroxyalkylphenothiazines+as+MDR+modulators

N-dienylphenothiazines synthesized from tetrazolo[1,5-a]pyridinium salts by treatment with phenothiazine were subjected to catalytic hydrogenation to yield N-butylphenothiazines, whereas transformation of these dienes with borane dimethyl sulfide (BH(3) × Me(2)S) resulted in selective hydroboration of one double bond and full reduction of the other double bond to give 2-hydroxybutylphenothiazines. Position of the hydroxyl group was supported by NMR spectroscopy and verified by X-ray analysis. Comparison of MDR modulatory activity of the new derivatives revealed that the hydroxybutyl compounds are promising candidates for development of novel MDR inhibitors.
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GHTM is a R&D Unit that brings together researchers with a track record in Tropical Medicine and International & Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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