Copper complexes modelling the interaction between benzolamide and Cu-substituted carbonic anhydrase. Crystal structure of Cu(bz)(NH3)4 complex
摘要:
New copper benzolamide (H(2)bz, 5-phenylsulfonamide-1,3,4-thiadiazole-2-sulfonamide) complexes with ammonia, diethylentriamine (dien) and dipropylentriamine (dipn) have been prepared. The complex [Cu(bz)(NH3)(4)] crystallises in the monoclinic space group P2(1)/n with a = 7.621(3), b = 19.91(5), c = 11.291(3) Angstrom, beta = 93.17(4)degrees and Z = 4. The Cu(II) is five-coordinated with an almost regular square pyramidal geometry. The dideprotonated sulfonamide behaves as monodentate ligand interacting with the metal ion through the N atom of the unsubstituted sulfonamide group. In the EPR spectrum, exchange coupling between Cu(II) polyhedra of different orientations in the unit cell is observed. The dien and dipn ligands provide a model of the histidine environment of the metal ion in carbonic anhydrase (CA). From the spectroscopic properties, the ternary triamine complexes can be considered as analogous of the adducts formed by Cu-CA and the inhibitor benzolamide. (C) 1998 Elsevier Science S.A. All rights reserved.
合成了一系列新的磺酰胺衍生物,其结构经1 H NMR和ESI-MS确证。用Dock6的工具评估了一些目标化合物,并研究了所有新化合物对碳酸酐酶II的抑制作用。另外,已经研究了某些化合物在小鼠中的抗缺氧作用。结果表明,九种目标化合物表现出与乙酰唑酰胺一样有效的效果,而十种化合物对碳酸酐酶II的抑制作用比乙酰唑酰胺更强。其中三个(I-8,I-18和I'-3)可以明显延长缺氧小鼠的存活时间,值得进一步研究。
A series of new sulfamide derivatives have been synthesized, their structures were confirmed by 1H NMR and ESI-MS. Some target compounds were assessed by the tool of Dock6, and inhibition effects of all the new compounds on carbonicanhydrase II have been investigated. In addition, some compounds have been investigated for their antihypoxic effects in mice. Results indicated that nine target compounds
合成了一系列新的磺酰胺衍生物,其结构经1 H NMR和ESI-MS确证。用Dock6的工具评估了一些目标化合物,并研究了所有新化合物对碳酸酐酶II的抑制作用。另外,已经研究了某些化合物在小鼠中的抗缺氧作用。结果表明,九种目标化合物表现出与乙酰唑酰胺一样有效的效果,而十种化合物对碳酸酐酶II的抑制作用比乙酰唑酰胺更强。其中三个(I-8,I-18和I'-3)可以明显延长缺氧小鼠的存活时间,值得进一步研究。
Ophthalmic compositions comprising combinations of carbonic anhydrase inhibitors and S-(-)-1-(tert-butylamino)-3-(4-morpholino-1,2,5-thiadiazol-3-yl)-oxy-2-propanol for topical application in the treatment of elevated intraocular pressure
申请人:Merck & Co., Inc.
公开号:EP0014642A2
公开(公告)日:1980-08-20
Although carbonic anhydrase inhibitors (C.A.l) can be administered systemically by oral or intravenous routes, attempts to administer them topically have been ineffective and inactive in the treatment of intraocular hypertension. The alkali metal salts, especially the sodium and potassium salts, of salt-forming carbonic anhydrase inhibitors in combination with S-(-)-1- (tert-butylamino) -3-[(4-morpholino-1,2,5-thiadiazol -3-yl)oxy] -2-propanol or its racemic modification are now found to be remarkably effective in lowering intraocular pressure, even in normotensive hosts, but especially in those hosts having an elevated intraocular pressure.
Ophthalmic compositions of carbonic anhydrase inhibitors for topical application in the treatment of elevated intraocular pressure
申请人:Merck & Co., Inc.
公开号:EP0036351A2
公开(公告)日:1981-09-23
Although dibasic carbonic anhydrase inhibitors (CAI.) can be administered systemically by oral or intravenous routes, attempts to administer them topically were inadvisable because of their elevated pH. The mono-alkali metal salts in the treatment of intraocular hypertension especially the sodium and potassium salts, of dibasic salt-forming C.A.I. are as effective in lowering intraocular pressure as dialkali metal salts of dibasic C.A.I. while having a pH more in harmony with ocular pH. They are found particularly useful when administered in conjunction with an ophthalmologically acceptable water-soluble polymer such as hydroxypropylcellulose in an aqueous carrier.
Ophthalmic inserts for lowering intraocular pressure comprising carbonic anhydrase inhibitors
申请人:Merck & Co., Inc.
公开号:EP0033042A1
公开(公告)日:1981-08-05
Although carbonic anhydrase inhibitors (C.A.I.) can be administered systemically by oral or intravenous routes, attempts to administer them topically have been ineffective and inactive in the treatment of intraocular hypertension. The alkali metal salts, especially the sodium and potassium salts, of salt-forming C.A.I. are now found to be remarkably effective in lowering intraocular pressure, even in normotensive hosts, but especially in those hosts having an elevated intraocular pressure.