Carbonic Anhydrase Inhibitors Part 721 Synthesis and Antiglaucoma Properties of Metal Complexes of p-Fluorobenzolamide

摘要

Metal complexes of a heterocyclic sulfonamides possessing very strong carbonic anhydrase (CA)inhibitory properties, i.e., 5-(p-fluorobenzenesulfonylamido)-1,3,4-thiadiazole-2-sulfonamide (p-fluorobenzolamide)were prepared. The new complexes contained metal ions such as Zn(II), Cu(II), Co(II), Ni(II),Cd(II) and Mn(II). The new compounds were characterized by standard physico-chemical procedures, andassayed as inhibitors of three CA isozymes, CA I, II and IV. Very good inhibition has been evidenced bothfor the parent sulfonamides as well as for the prepared complexes, against all three investigated isozymes.Some of these new complexes as well as the parent sulfonamide, strongly lowered intraocular pressure (IOP)in normotensive rabbits when administered as a 2% solution into the eye.