An attempt to develop a water-soluble carbonic anhydrase inhibitor focused on exploring structure-activity relationships in the thienothiopyransulfonamide class. The strategy to influence water solubility while retaining carbonic anhydrase activity involved the introduction of a hydroxyl moiety and adjusting the oxidation state of the sulfur on the thiopyran portion of the molecule. Compounds 4 and 17 best fit the criteria of aqueous solubility and inhibitory potency vs. human carbonic anhydrase II and are candidates for evaluation as topically effective antiglaucoma agents.

Thienothiopyran-2-sulfonamides show potential as water-soluble carbonic anhydrase inhibitors with potential for topically effective antiglaucoma agents.

Paper

Thienothiopyran-2-sulfonamides: a novel class of water-soluble carbonic anhydrase inhibitors.

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