QSAR studies for the inhibition of the transmembrane carbonic anhydrase isozyme XIV with sulfonamides using PRECLAV software.
QSAR studies for the inhibition of isozyme XIV of human carbonic anhydrase (CA, EC 4.2.1.1) by a series of sulfonamides including clinically used derivatives (acetazolamide, methazolamide, ethoxzolamide, dichlorophenamide, dorzolamide, brinzolamide, benzolamide, and zonisamide) are presented. Statistical calculations done using the PRECLAV program, for the correlation between the observed inhibition values and the calculated ones were good (s = 0.2416, r(2) = 0.9259, F = 75.0196, [image omitted] ). The obtained results by using PRECLAV descriptors have been compared with those where the descriptors have been calculated with HYPERCHEM. The obtained QSAR equations pointed out the fact that the CA inhibitory activity decreased for unsubstituted (at the organic scaffold) aromatic/heteroaromatic sulfonamides, but was favored by the presence of alkyl groups substituting the scaffold, which led to a higher internal topological diversity, as well as by the presence of condensed aromatic rings in the structure of these enzyme inhibitors.
Singh
Shalini
S
Department of Chemistry, Bareilly College, Bareilly, (U.P), India.
Khadikar
Padmakar V
PV
Scozzafava
Andrea
A
Supuran
Claudiu T
CT
D002257:Carbonic Anhydrase Inhibitors / Q000737:chemistry* / Q000494:pharmacology; D002256:Carbonic Anhydrases / Q000378:metabolism*; D006801:Humans; D021281:Quantitative Structure-Activity Relationship; D012984:Software; D013449:Sulfonamides / Q000737:chemistry* / Q000494:pharmacology
D002257:Carbonic Anhydrase Inhibitors; D013449:Sulfonamides; D002256:Carbonic Anhydrases; C466621:carbonic anhydrase XIV