Abstract
Carbonic anhydrase (CA, EC 4.2.1.1) inhibitors (CAIs) are a class of pharmaceuticals used as antiglaucoma agents, diuretics, antiepileptics, in the management of mountain sickness, gastric and duodenal ulcers, neurological disorders, or osteoporosis. We report here the inhibitory capacities of some organic nitrates against two human (hCA) isozymes, hCA I and hCA II. The IC 50 values of compounds 1– 12 against hCA I ranged between 7.13 mM and 124 mM, and against hCA II between 65.1 μM and 0.79 mM. Nitrate esters are thus interesting hCA I and II inhibitors, and might be used as leads for generating enzyme inhibitors eventually targeting other isoforms which have not been assayed yet for their interactions with such agents.
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