2-aminobenzotiyazolün karışık ligandlı metal kompleksleri ve biyolojik özellikleri hakkında literatür çalışması

2-Aminobenzotiyazol ile bazı organik bileşiklerin [β-pikolin, γ-pikolin, isokinolin, asetilaseton, o-hidroksiasetofenon, 1,2-etilendiamin, piperazin, N, N'-bis(4-antipirilmetil)piperazin, N,N'-tetra(4-antipirilmetil)-1,2-diaminoetan, N,N'-bis(4-antipirilmetil) piperazin, N, N'-tetra(4-antipirilmetil)-1,2-diaminoetan, ftalamid, malonamid, benzilaseton, tetrametilen sulfoksit, katekol, p-klorofenoksiasetik asit, 7-oksobisiklo[2.2.1] heptan-2,3-dikarboksilik asit, 2,2’-bipridin, 1.10-fenantrolin, propanoik asit, fenoksiasetik, 2-imino-3-allilbenzotiyazol, sakarin, trifenilfosfin, trifloroasetik asit, adipik asit, 1,4-benzendikarboksilik asit, süksinik asit, formik asit, pikrik asit, amino asit, p-formilfenoksiasetik asit ve 2,6-piridindikarboksilik asit] karışık ligandlı metal komplekslerinin (M = Mn, Fe, Co, Ni, Cu, Zn, Ag, Au, Ru, Os, Ir, Pd, Rh, U, Eu ve Tb) yapıları ve biyolojik özelliklerini anlatan çalışmalar literatürde gözlenmiştir. Bu bileşiklerde 2-aminobenzotiyazol metale tiyazol halkasının N ve/veya S ve/veya animo grubundan bağlanmakta ya da tamamlayıcı iyon şeklinde yapıda yer almaktadır. Bu komplekslerinin antibakteriyel, antikanser, antifungal, anti-inflamatuar, antitümör ve karbonik anhidraz inhibisyonu gibi biyolojik özellikleri bilinmektedir

Salisilik asit türevleri ile 2-aminobenzotiyazol türevlerinin karışık ligandlı Cu(II) komplekslerinin sentezi ve karakterizasyonu

Bu çalışmada, salisilik asit türevleri [salisilik asit (H2sal) veya asetilsalisilik asit (Hasal)] ile 2-aminobenzotiyazol türevlerinin [2-aminobenzotiyazol (abt) veya 2-amino-6-klorobenzotiyazol (Clabt) veya 2-amino-6-metilbenzotiyazol (Meabt)] karışık ligandlı Cu(II) geçiş metal kompleksleri sentezlenmiştir. Amorf halde elde edilen geçiş metal komplekslerinin yapıları elementel analiz, ICP-OES, FT-IR, UV-Vis, termal analiz, manyetik duyarlılık ve molar iletkenlik sonuçları dikkate alınarak önerilmiştir

Carbonic anhydrase inhibitory activities of novel proton transfer salts and their Cu(II) complexes

In this study, two new proton transfer salts of sulfonamide derivatives of maleic acid, namely (ClHabt)+(mabsmal)– (1) and (ClHabt)+(pabsmal)– (2), were obtained from 2-amino-6-chlorobenzo­thiazole (Clabt) and N-(3-sulfamoylphenyl)maleamide acid (Hmabsmal) and N-(4-sulfamoyl­phenyl)maleamide acid (Hpabsmal), respectively. Also, the Cu(II) complexes (3 and 4) of salts (1 and 2) and of Hmabsmal (5) were prepared. Compounds 1‒5 were characterized by elemental, NMR (1H and 13C), FTIR, and thermal analyses, as well as UV-Vis, magnetic moment, and molar conductivity measurements. Carbonic anhydrase isoenzymes (hCA I and II) were purified from human erythrocyte cells by affinity chromatography. The effects of the synthesized compounds on the hydratase and esterase activities of CA isoenzymes were studied in vitro. The results reveal that the synthesized compounds inhibit both esterase and hydratase activities of hCA I and hCA II. The inhibition constants of the compounds (Ki) were determined according to the esterase activity measurements. Ki values of 1‒5 are in the range of 0.06 ± 0.003 µM and 4.25 ± 0.100 µM for hCA I, and of 0.02 ± 0.001 µM and 3.21 ± 0.200 µM for hCA II

2-Aminopiridin Türevleri ile Sülfonamit İçeren Maleamik Asit Türevinin Proton Transfer Tuzları ve Cu(II) Komplekslerinin Sentezi, Karakterizasyonu ve İnsan Eritrosit Karbonik Anhidraz İzoenzimleri Üzerindeki Etkilerinin İncelenmesi

Bu çalışmada, ilk olarak 3-aminobenzensülfonamit (mabs) ile maleik anhidritin (mal) tepkimesinden sülfonamit içeren maleamik asit türevi (E)-4-okso-4-(3-sülfamoyilfenil)amino)büt-2-enoik asit (Hmabsmal) bileşiği sentezlenmiştir. Daha sonra Hmabsmal bileşiği ile 2-aminopiridin türevlerinin [2-amino-3-metilpiridin (2a3mp) (1); 2-amino-4-metilpiridin (2a4mp) (2); 2-amino-5-metilpiridin (2a5mp) (3) veya 2-amino-6-metilpiridin (2a6mp) (4)] proton transfer tuzları hazırlanmıştır. 1 ve 3 tuzlarının Cu(II) (5 ve 6) geçiş metal kompleksleri sentezlenmiştir. Proton transfer tuzlarının yapısı elementel analiz, 1H-NMR, 13C-NMR, FT-IR, UV-Vis metotları ile aydınlatılmıştır. Amorf halde elde edilen geçiş metal komplekslerinin yapıları ise elementel analiz, ICP-OES, FT-IR, UV-Vis, termal analiz, manyetik duyarlılık ve molar iletkenlik sonuçları dikkate alınarak önerilmiştir. Ayrıca, sentezlenen maddelerin insan eritrosit hCA I ve hCA II izoenzimleri üzerindeki inhibisyon etkilerini belirlemek üzere in vitro çalışmalar yapılmıştır. Yeni sentezlenen maddelerin izoenzimlerin esteraz aktivitesini inhibe ettiği tespit edilmiştir. Özellikle 5 ve 6 bileşikleri kayda değer inhibisyon etkisine sahiptirler. Bu maddelerin inhibisyon değerlerinin kontrol bileşiği asetazolamit (AAZ) değerleri ile kıyaslanabilir büyüklükte olduğu tespit edilmiştir

Synthesis, characterization, and pharmacological evaluation of the proton transfer salts of 2-aminobenzothiazole derivatives with 5-sulfosalicylic acid and their Cu(II) complexes

WOS: 000457548200025Two proton transfer compounds, formed between 2-aminobenzothiazole derivatives (2-aminobenzothiazole (abt) and 2-amino-6-ethoxybenzothiazole (EtOabt)) and 5-sulfosalicylic acid dihydrate (H3ssa) as parent compounds, (Habt)(+) (H2ssa)(-) (1) and (HEtOabt)(+) (H2ssa)(-) (2) and their Cu(II) complexes (3 and 4, respectively) have been prepared and characterized using spectroscopic techniques. The single crystal X-ray diffraction method has been also applied to 3 and 4. Although 3 has a distorted octahedral form, 4 exhibits a distorted square pyramidal geometry. All compounds, including saline and diclofenac sodium as standards, have been evaluated pharmacologically for their anti-inflammatory and analgesic activities in rats and mice. Parent compounds (abt, EtOabt, and H3ssa) 3 and 4 showsignificant anti-inflammatory and analgesic activities as compared with control compounds. [GRAPHICS] .Dumlupinar University Research Fund [2017/09]The authors acknowledge the support provided by Dumlupinar University Research Fund (Grant No. 2017/09)

Preparation of Two Maleic Acid Sulfonamide Salts and Their Copper(II) Complexes and Antiglaucoma Activity Studies

Two novel proton transfer compounds (HAP)+(SAMAL)- and (HBI)+(SAMAL)-.H2O were obtained from (E)-4-oxo-4-(4-sulfamoylphenylamino)but-2-enoic acid (HSAMAL) and 2-aminopyridine (AP) or 1H-benzimidazole (BI), respectively. Copper(II) complexes of salts and of HSAMAL have also been prepared. They have been characterized by elemental, spectral, thermal analyses, magnetic measurement and molar conductivity. Human carbonic anhydrase isozymes (hCA I and hCA II) were purified from erythrocytes by using affinity chromatography as 84.40 and 188.71 fold, respectively. The inhibitory effects of synthesized compounds and acetazolamide (AAZ, control compound) on the hydratase and esterase activities of hCA isozymes have been studied as in vitro to find out their antiglaucoma potentials. The inhibition constant (Ki) values of the compounds were in the range of 0.18 ± 0.007 to 10.24 ± 0.014 µmol L-1 for hCA I, and 0.12 ± 0.004 to 130.11 ± 0.021 µmol L-1 for hCA II

Synthesis and Structural Studies of Proton Transfer Salt Between Benzimidazole and (E)-4-oxo-4-(4-sulfamoylphenylamino)but-2-enoic Acid and Their Transition Metal Complexes, and Investigation of Inhibition Properties on hCAI and hCA II Isoenzymes

Bu çalışmada, ilk olarak sülfanilamit (sa) ve maleik anhidritin (mal) tepkimesinden (E)-3-(4- sülfamoyilfenil)amino)büt-2-enoik asit (Hsamal) bileşiği sentezlenmiş ve sonra bu bileşiğin 2-aminopiridin (ap) ile proton transfer tuzu (Hapsamal) hazırlanmıştır. Bu tuzun Fe(II), Co(II), Ni(II) ve Zn(II) geçiş metal kompleksleri sentezlenmiştir. Proton transfer tuzlarının yapısı elementel analiz, 1H-NMR, 13C-NMR, FT-IR, UV-Vis metotları ile aydınlatılmıştır. Amorf halde elde edilen geçiş metal komplekslerinin yapıları ise elementel analiz, ICP-OES, FT-IR, UV-Vis, manyetik duyarlılık ve molar iletkenlik sonuçları dikkate alınarak önerilmiştir. Ayrıca, sentezlenen maddelerin insan eritrosit hCA I ve hCA II izoenzimleri üzerindeki inhibisyon etkilerini belirlemek üzere in vitro çalışmalar yapılmıştır. Yeni sentezlenen maddelerin izoenzimlerin esteraz aktivitesini inhibe ettiği tespit edilmiştir. Bu maddelerin inhibisyon değerlerinin kontrol bileşiği asetazolamid (AAZ) değerleri ile kıyaslanabilir büyüklükte olduğu tespit edilmiştir.In this study, first (E)-4-oxo-4-(4-sulfamoylphenylamino)but-2-enoic acid (Hsamal) have been synthesized from the reaction between sulfanilamide (sa) and maleic anhydride (mal) and second, proton transfer salt (Hapsamal) has been prepared from 2-aminopyridine (ap) and Hsamal. Four transition metal complexes [Fe(II), Co(II), Ni(II) and Zn(II)] of the salt have also been synthesized. The structure of proton transfer compounds have been proposed by using elemantal analysis, 1H-NMR, 13C-NMR, FT-IR, UV-Vis techniques. The structure of amorphous metal complexes have been proposed by using elemantal analysis, ICP-OES, FT-IR, UV-Vis, magnetic susceptibility and molar conductivity techniques. In addition, in vitro studies have been performed to determine the inhibition effects of synthesized compounds on human erythrocyte hCA I and hCA II isoenzymes. It has been observed that synthesized compounds have affected esterase activities of hCA I and hCA II and the inhibition values of these compounds are comparable with the inhibition values of control compound acetazolamide (AAZ)

Synthesis and characterization of Cu(II) complexes of 2-amino-6-sulfamoylbenzothiazole and their inhibition studies on carbonic anhydrase isoenzymes

WOS: 0004401257000232-Amino-6-sulfamoylbenzothiazole (SMABT) and its proton transfer compound (HSMABT)(+)(HDPC)(-) (1) with 2,6-pyridinedicarboxylic acid (H2DPC), and their Cu(II) complexes (2 of SMABT, 3 and 4 of 1) have been prepared and characterized by spectroscopic techniques. Additionally, single crystal X-ray diffraction techniques were applied to all complexes. All compounds, including acetazolamide (AAZ) as the control compound, were also evaluated for their in vitro inhibition effects on human hCA I and hCA II for their hydratase and esterase activities. The synthesized complexes have remarkable inhibitory effects on hCA I and hCA II isoenzymes. The inhibition potentials of the proton transfer salt (1) and the metal complexes (2-4) are comparable with AAZ. Esterase K-i values of the compounds (1-4) are in the range of 0.089 +/- 0.008 mu M-0.149 +/- 0.017 mu M for hCA I and 0.046 +/- 0.008 mu M-0.085 +/- 0.019 mu M for hCA II. Inhibition data have been analyzed by using a one-way analysis of variance for multiple comparisons (p < 0.0001). (C) 2018 Published by Elsevier Ltd.Dumlupinar University Research Fund [2014/18]; Aksaray University of Science and Technology Application and Research Center [2010K120480]The authors acknowledge the support provided by Dumlupinar University Research Fund (grant No. 2014/18). In addition, the authors acknowledge Aksaray University of Science and Technology Application and Research Center, for the use of the Bruker SMART BREEZE CCD diffractometer (purchased under grant No. 2010K120480 of the State of Planning Organization)

A novel proton transfer salt of 2-amino-6-sulfamoylbenzothiazole and its metal complexes: the evaluation of their inhibition effects on human cytosolic carbonic anhydrases

WOS: 000392591100016PubMed: 28100079A novel proton transfer compound (SMHABT) (+)(HDPC)(-) (1) obtained from 2-amino-6-sulfamoylbenzothiazole (SMABT) and 2,6-pyridinedicarboxylic acid (H2DPC) and its Fe(III), Co(II), Ni(II) complexes (2-4), and Fe(II) complex of SMABT (5) have been prepared and characterized by spectroscopic techniques. Additionally, single crystal X-ray diffraction techniques were applied to complexes (2-4). All complexes (2-4) have distorted octahedral conformations and the structure of 5 might be proposed as octahedral according to spectral and analytical results. All compounds, including acetazolamide (AAZ) as the control compound, were also evaluated for their in vitro inhibition effects on human hCA I and hCA II for their hydratase and esterase activities. The synthesized compounds have remarkable inhibitory activities on hCA I and hCA II. Especially, the inhibition potentials of the salt and the metal complexes (1-5) are comparable with AAZ. Inhibition data have been analyzed by using a one-way analysis of variance for multiple comparisons (p < .0001).Dumlupinar University Research Fund [2014/18]This work was supported by the Dumlupinar University Research Fund [(grant No. 2014/18)]