Journal
CHEMMEDCHEM
Volume 8, Issue 4, Pages 603-613Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cmdc.201200386
Keywords
aldehyde reductase; aldose reductase; benzothiadiazines; inhibitors; structureactivity relationships
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Funding
- National Natural Science Foundation of China [51103012, 21272025]
- Research Fund for the Doctoral Program of Higher Education of China [20111101110042]
- Beijing Natural Science Foundation [7102091]
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The development and progression of chronic complications in diabetic patients, such as retinopathy, nephropathy, neuropathy, cataracts, and stroke, are related to the activation and/or overexpression of aldose reductase (ALR2), which is a member of the aldoketo reductase superfamily. A structureactivity relationship study focused on the C7 position of 1,2,4-benzothiadiazine-1,1-dioxide derivatives was pursued in an attempt to discover ALR2 inhibitors with enhanced potency and selectivity. These studies led to a series of new C7-substituted compounds, which were evaluated for their inhibitory activity against ALR2; they exhibited IC50 values in the range of 2.8045.13nM. Two compounds with a C7-dimethylcarbamoyl and a C7-diethylcarbamoyl substituent, respectively, were found to be the most active and presented excellent selectivity for ALR2 over aldehyde reductase (ALR1). The structureactivity relationship analyses and molecular modeling studies presented herein highlight the importance of hydrophobic and bulky groups at the C7 position for inhibitory activity and selectivity toward ALR2.
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