Bioorganic & medicinal chemistry letters · 2009
Nitric oxide-donating carbonic anhydrase inhibitors for the treatment of open-angle glaucoma.
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Steele Rebecca M, Benedini Francesca, Biondi Stefano, Borghi Valentina, Carzaniga Laura, Impagnatiello Francesco, Miglietta Daniela, Chong Wesley K M, Rajapakse Ranjan, Cecchi Alessandro, Temperini Claudia, Supuran Claudiu T
Аннотация
Novel bi-functional compounds with a nitric oxide (NO)-releasing moiety bound to a dorzolamide scaffold were investigated. Several compounds were synthesized and their activity as selective carbonic anhydrase inhibitors (CAI) evaluated in vitro on recombinant hCA type I, II and IV enzyme isoforms where they showed different degrees of potency and selectivity to hCA II. A high resolution X-ray crystal structure for the CA II adduct with 8 confirmed the high affinity of this class of compounds for the enzyme. Compounds 4, 6, and 8 showed highly potent and efficacious NO-mediated properties as assessed by their vascular relaxant effect on methoxamine-precontracted rabbit aortic rings. Finally, compounds 4 and 6 exerted potent intraocular pressure (IOP) lowering effects in vivo in normotensive rabbits thereby anticipating their potential for the treatment of hypertensive glaucoma.