Aryldiazepinothiophenones 4 were prepared from the reaction of o-phenylenediamines with acetone in the presence of 2-mercaptocarboxylic acids along with thiazolobenzodiazepines 6, thiazolobenzimidazoles 7 and 1,5-benzodiazepines 5, which were obtained as by-products. The benzodiazepinothiophenones 4a-d and the benzodiazepines 5a-d were also isolated from the reaction of o-phenylenediamines 1a-c with phorone. Structural assignments of the new compounds as well as complete assignment of H-1 and C-13 NMR signals were based on the analysis of their H-1 and C-13 NMR (1 D and 2D), IR, MS and elemental analysis data. Compounds 4 were evaluated for aldose reductase inhibition and also as antioxidants. (C) 2009 Elsevier Ltd. All rights reserved.
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Indian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, India
Reddy, K. Srinivasa
Reddy, Ch. Venkateshwar
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Indian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, India
Reddy, Ch. Venkateshwar
Mahesh, M.
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Indian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, India
Mahesh, M.
Reddy, K. Rosi
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Indian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, India
Reddy, K. Rosi
Raju, P. V. K.
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Indian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, India
Raju, P. V. K.
Reddy, V. V. Narayana
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Indian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem 2, Hyderabad 500007, Andhra Pradesh, India
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Purdue Univ, Dept Med Chem & Mol Pharmacol, Purdue Canc Ctr, W Lafayette, IN 47906 USAPurdue Univ, Dept Med Chem & Mol Pharmacol, Purdue Canc Ctr, W Lafayette, IN 47906 USA
De, SK
Gibbs, RA
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Purdue Univ, Dept Med Chem & Mol Pharmacol, Purdue Canc Ctr, W Lafayette, IN 47906 USAPurdue Univ, Dept Med Chem & Mol Pharmacol, Purdue Canc Ctr, W Lafayette, IN 47906 USA