Some N-(5-methyl-1,3,4-thiadiazol-2-yl)-4-[(3-substituted)ureido/thioureido]benzenesulfonamides as carbonic anhydrase I and II Inhibitors

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Turk S., TOK F., Celik H., KARAKUŞ S., NADAROĞLU H., Kocyigit-Kaymakcioglu B., ...More

MARMARA PHARMACEUTICAL JOURNAL, vol.21, no.1, pp.89-95, 2017 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 1
  • Publication Date: 2017
  • Doi Number: 10.12991/marupj.259885
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.89-95
  • Karadeniz Technical University Affiliated: No


In the present study, N-(5-methyl-1,3,4-thiadiazol-2-yl)-4-[(3-substituted)ureido]benzenesulfonamide (1-9) and N-(5-methyl-1,3,4-thiadiazol-2-yl)-4-[(3-substituted) thioureido]benzenesulfonamide (10-14) derivatives were synthesized from 4-amino-N-(5-methyl-1,3,4-thiadiazol-2-yl) benzenesulfonamide (sulfamethizole). All new compounds were characterized by elemental analysis and various spectroscopic methods (FTIR, H-1-NMR and MS). These new sulfonamide derivatives were investigated as inhibitors of carbonic anhydrase especially human carbonic anhydrase I and II. The new compounds showed higher activity against the human cytosolic CA I (IC50 values 0.144-15.65 nM) and CA II (IC50 values 0.109-17.95 nM) in comparison with the clinically used CA inhibitor acetazolamide.