Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 22, Issue 24, Pages 6768-6775Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2014.10.041
Keywords
Carbonic anhydrase; Isoform-selective CA inhibitors; Ureido-substituted sulfonamide; GABA
Funding
- EU
- Erasmus Project
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Reaction of gamma-Boc-GABA, prepared by protecting the gamma-amino moiety of the amino butyric acid with the tert-butyloxycarbonyl (Boc) protecting group, with 4-methyl/ethyl benzenesulfonamide, followed by removal of the Boc protecting group in 3 M HCl afforded the corresponding hydrochlorides, which were further derivatized by reaction with a varying of aryl isocyanates to give a new classes of ureido substituted benzenesulfonamide containing a GABA moiety. Inhibition studies of the human carbonic anhydrase (CA, EC 4.2.1.1) isoforms, CA I-XIV with these new compounds revealed that they possess moderate-weak inhibition potency against hCA III, IV, VA, VI and XIII, rather efficient inhibitory power against hCA I, VI, and IX, and excellent inhibition of the physiologically relevant hCA II and VII, as well as of the two tumor-associated isoforms CA IX and XII. The inhibition profile of the new ureido-substituted benzenesulfonamides reported here is thus very different from the corresponding ureido-substituted analogs incorporating sulfanilamide, which were previously investigated as inhibitors of some of these enzymes. (C) 2014 Elsevier Ltd. All rights reserved.
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