New chemotypes acting as isozyme-selective carbonic anhydrase inhibitors with low affinity for the offtarget cytosolic isoform II
- 作者：Fabrizio Carta ; Daniela Vullo ; Alfonso Maresca ; Andrea Scozzafava ; Claudiu T. Supuran ; claudiu.supuran@unifi.it
- 关键词：Carbonic anhydrase ; Offtarget isoform ; 2-Hydroxyquinoline ; Coumarin oxime ; Coumaphos
- 刊名：Bioorganic and Medicinal Chemistry Letters
- 出版年：2012
- 期刊代码：10_0960894x
- 类别：ch
- 出版时间：15 March, 2012
- 卷：22
- 期：6
- 页码：2182-2185
- 文件大小：451 K
摘要
Considering phenols and coumarins as lead molecules for obtaining non-sulfonamide inhibitors of carbonic anhydrases (CAs, EC 4.2.1.1), we screened a large number of compounds possessing diverse chemotypes, but structural features which resemble the two chemical classes. Here we report an investigation of such derivatives which do not significantly inhibit CA II, but show interesting inhibition profiles against other isozymes. Pyridine-N-oxide-2-thiophenol, thiobenzoic acid, thimerosal, two oximes derived from a six-membered-ring lactone and from coumarin; 2-hydroxyquinoline and coumaphos, were investigated as inhibitors of CA I-XIV. All these compounds did not inhibit CA II, whereas the two oximes and 2-hydroxyquinoline were low nanomolar inhibitors of CA I, IX, XII, XIII and XIV, showing a very different inhibition profile compared to sulfonamides and sulfamates. Some other compounds showed low micromolar inhibition of other isoforms of interest, such as CA VA/VB, CA VI and VII. This study demonstrates that a rather wide range of structures show low nanomolar鈥攎icromolar inhibitory activity against many CA isozymes, without inhibiting significantly the offtarget isoform CA II.