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Karakılıç E, Baran Ş, Öğütçü H, Akdemir A, Baran A. rac- and meso-Cyclohexanoids: Their α-, β-glycosidases, antibacterial, antifungal activities, and molecular docking studies. Arch Pharm (Weinheim) 2020; 353:e1900267. [PMID: 31922281 DOI: 10.1002/ardp.201900267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/23/2019] [Accepted: 12/08/2019] [Indexed: 11/12/2022]
Abstract
An efficient and versatile synthesis method has been postulated for hydroxymethylated rac- and meso-cyclohexanoid derivatives. The synthesis of these stereoisomers was achieved easily with traditional methods using hexahydroisobenzofuran 6, prepared from commercially available cis-hydrophthalic anhydride. The study, involving diastereoselective epoxidation and cis-hydroxylation, was conducted to obtain epoxy-, cis-, and trans-diol-furans 7, 8, and 9. After sulfamic acid-catalyzed ring-opening reaction of the epoxide and furan rings, rac- and meso-tetraacetates 14, 15, and 16 were afforded. Hydrolysis of acetate groups with ammonia in absolute methanol yielded the desired tetrols rac-17, meso-18, and meso-19. All structures, after purification by chromatographic methods and elucidation by spectral techniques, were screened against α- and β-glucosidases. Compounds 7, 8, 10, 17, 18, and 19 were also evaluated for their antibacterial and antifungal activity against some selected synthesized compounds with varying degrees of inhibitory effects on the growth of different pathogenic microorganisms by the well-diffusion method. In addition, Saccharomyces cerevisiae α-glucosidase molecular modeling studies were performed for all rac- and meso-compounds 7, 8, 10, 17, 18, and 19.
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Affiliation(s)
- Emel Karakılıç
- Department of Chemistry, Sakarya University, Sakarya, Turkey
| | - Şule Baran
- Department of Biology, Sakarya University, Sakarya, Turkey
| | - Hatice Öğütçü
- Department of Biology, Ahievran University, Kırşehir, Turkey
| | - Atilla Akdemir
- Department of Pharmacology, Bezmialem Vakif University, Istanbul, Turkey
| | - Arif Baran
- Department of Chemistry, Sakarya University, Sakarya, Turkey
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Nandi S, Das K, Datta A, Roy S, Garribba E, Akitsu T, Sinha C. A rare cobalt(III) paramagnetic derivative incorporating 1-alkyl-2-[(o-thioalkyl)phenylazo]imidazole (SMeaaiNEt): EPR, redox and magnetic interpretation. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Intercalated iodobismuthate in the layers of azoimidazoles. Structure, photochromism and DFT computation. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.01.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Saha G, Sarkar KK, Sardar D, Cheng J, Lu TH, Sinha C. Structure, electrochemistry and photochromism of [Cu(RaaiR′)(PPh3)X] (RaaiR′=1-alkyl-2-(arylazo)imidazole; X=Cl, Br, I) and correlation with theoretical calculations. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.07.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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The synthesis, structure and photochromism of mercury(II)-iodide complexes of 1-CnH2n+1-2-(arylazo)imidazoles (n=4, 6, 8). Polyhedron 2012. [DOI: 10.1016/j.poly.2011.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Synthesis, structure, photochromism and DFT calculations of copper(I)-triphenylphosphine halide complexes of thioalkylazoimidazoles. Polyhedron 2011. [DOI: 10.1016/j.poly.2010.11.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pramanik A, Das G. Aryl azo imidazole assisted self-assembly of d10 metal complexes: Influence of halogen substitution and counter ions. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bhunia P, Sardar D, Sarker K, Ray U, Wu JS, Lu TH, Sinha C. Nickel(II)-azido/thiocyanato complexes of 1-alkyl-2-(arylazo) imidazole: single crystal X-ray structure of [Ni(Pai-Me)2(N3)2] (Pai-Me=1-methyl-2(phenylazo)imidazole). J COORD CHEM 2010. [DOI: 10.1080/00958970802291282] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- P. Bhunia
- a Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700 032, India
| | - D. Sardar
- a Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700 032, India
| | - K.K. Sarker
- a Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700 032, India
| | - U.S. Ray
- a Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700 032, India
| | - J.-S. Wu
- b Department of Physics , National Tsing Hua University , Hsinchu, Taiwan 300, ROC
| | - T.-H. Lu
- b Department of Physics , National Tsing Hua University , Hsinchu, Taiwan 300, ROC
| | - C. Sinha
- a Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700 032, India
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Bhunia P, Ray U, Cheng J, Lu TH, Sinha C. Nickel(II)-azido/thiocyanato complexes of 1-alkyl-2-(naphthylazo)imidazole. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.04.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ruthenium–carbonyl complexes of 1-alkyl-2-(arylazo)imidazoles: Synthesis, structure, spectra and redox properties. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.06.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Sarker KK, Sardar D, Suwa K, Otsuki J, Sinha C. Cadmium(II) complexes of (arylazo)imidazoles: synthesis, structure, photochromism, and density functional theory calculation. Inorg Chem 2007; 46:8291-301. [PMID: 17824607 DOI: 10.1021/ic7012073] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction between CdX2 and 1-alkyl-2-(phenylazo)imidazole (RaaiR') has isolated complexes of composition Cd(RaaiR')2X2 in MeOH or MeCN. Crystallization of Cd(RaaiR')2I2 from N,N-dimethylformamide (DMF) has separated [Cd(RaaiR')I2.DMF], while Cd(RaaiR')2X2 (X = Cl and Br) remains unchanged in its composition upon crystallization under identical conditions. The structure has been established by spectral (UV-vis and 1H NMR) data and confirmation in the latter case by a single-crystal X-ray diffraction study of [Cd(TaiMe)I2.DMF] [where TaiMe = 1-methyl-2-(p-tolylazo)imidazole]. UV-light irradiation in a MeCN solution of Cd(RaaiR')2I2 and [Cd(RaaiR')I2.DMF] shows trans-to-cis isomerization of coordinated azoimidazole. The reverse transformation, cis-to-trans, is very slow with visible light irradiation. Quantum yields (phit-->c) of trans-to-cis isomerization are calculated, and the free ligand shows higher phi values than their cadmium(II) iodo complexes. The cis-to-trans isomerization is a thermally induced process. The activation energy (Ea) of cis-to-trans isomerization is calculated by a controlled-temperature experiment. The effects of the anions (Cl-, Br-, I-, and ClO4-) and the number of coordinated azoimidazoles (RaaiR') [Cd(RaaiR') or Cd(RaaiR')2] on the rate and quantum yields of photochromism are established in this work. A slow rate of photoisomerization of [Cd(RaaiR')4](ClO4)2 compared to Cd(RaaiR')I2 or Cd(RaaiR')2X2 may be associated with the increased mass and rotor volume of the complexes. The rate of isomerization is also dependent on the nature of X and follows the sequence Cd(RaaiR')2Cl2 < Cd(RaaiR')2Br2 < Cd(RaaiR')2I2. It may be related to the size and electronegativity of halide, which reduces the effective molar association in the order of I < Br < Cl and hence the rate. Gaussian 03 calculations of representative complexes and free ligands are used to explain the difference in the rates and quantum yields of photoisomerization.
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Affiliation(s)
- K K Sarker
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 7000 032, India
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Otsuki J, Suwa K, Sarker KK, Sinha C. Photoisomerization and thermal isomerization of arylazoimidazoles. J Phys Chem A 2007; 111:1403-9. [PMID: 17352038 DOI: 10.1021/jp066816p] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photoisomerization and thermal isomerization behaviors of an extensive series of arylazoimidazoles are investigated. Absorption spectra are characterized by a structured pipi* absorption band around 330-400 nm with a tail on the lower energy side extending to 500 nm corresponding to an npi* transition. The trans-to-cis photoisomerization occurs on excitation into these absorption bands. The quantum yields are dependent on the excitation wavelength, as observed for azobenzene derivatives, but are generally larger than those of azobenzene. The thermal cis-to-trans isomerization rates are also generally larger than that of azobenzene and are comparable to those of 4-N,N-dimethylaminoazobenzene and 4-nitroazobenzene. Arylazoimidazoles with no substituent on the imidazole nitrogen are unique in that the quantum yield for the trans-to-cis photoisomerization and the rate of thermal cis-to-trans isomerization are particularly large. It is proposed that the fast thermal isomerization is due to an involvement of self-catalyzed and protic molecule-assisted tautomerization to a hydrazone form.
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Affiliation(s)
- Joe Otsuki
- College of Science and Technology, Nihon University, 1-8-14 Kanda Surugadai, Tokyo 101-8308, Japan.
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Datta P, Gayen P, Sinha C. Naphthylazoimidazole complexes of tetracarbonylchromium and molybdenum: Synthesis, spectra, electrochemistry and photophysical studies. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.06.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Copper(I) and Silver(I) Complexes of 1-alkyl-2-(methyl)-4-(arylazo)imidazole. Synthesis, Spectral Studies and Electrochemistry. TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-005-6376-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Azoimidazole Complexes of Manganese(II)-thiocyanate. X-ray Structures of 2-(p-tolylazo)imidazole and Bis-[1-methyl-2-(p-tolylazo)imidazole]- Di-thiocyanato-manganese(II). TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-005-6401-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Sarker KK, Chand BG, Jana AD, Mostafa G, Sinha C. Cd(II)–NCS/NCO complexes of 1-alkyl-2-(arylazo)imidazole: Single crystal X-ray structure of [Cd(HaaiMe)2(SCN)2]. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.10.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Otsuki J, Suwa K, Narutaki K, Sinha C, Yoshikawa I, Araki K. Photochromism of 2-(Phenylazo)imidazoles. J Phys Chem A 2005; 109:8064-9. [PMID: 16834190 DOI: 10.1021/jp0531917] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The isomerization behaviors of 2-(phenylazo)imidazole (Pai-H) and 1-N-methyl-2-(phenylazo)imidazole (Pai-Me) have been investigated. The crystal structure of trans-Pai-Me was determined, revealing that key structures around the azo group are nearly identical among azobenzene, Pai-H, and Pai-Me. Pai-Me undergoes reversible cis/trans photoisomerization, whereas Pai-H responds poorly to irradiation. The quantum yields of trans-to-cis isomerization of Pai-Me on 454 and 355 nm excitation are 0.35 +/- 0.03 and 0.25 +/- 0.03, respectively, in toluene. The wavelength-dependent isomerization quantum yield is well-known for azobenzene, but these values are substantially higher than those of azobenzene. The activation energy of thermal cis-to-trans isomerization of Pai-Me in toluene is 79.0 +/- 3.5 kJ mol(-1), which is lower than that of azobenzene by 15 kJ mol(-1). The thermal cis-to-trans isomerization of Pai-H is even faster. Density functional theory calculations were performed, revealing that the energy gaps between the azo n-orbital and the highest pi-orbital of azoimidazoles are much narrower than that of azobenzene. Finally, a preliminary study suggested that metal ions can modulate the absorption spectrum of Pai-Me without a loss of the gross photochromic behavior.
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Affiliation(s)
- Joe Otsuki
- College of Science and Technology, Nihon University, 1-8-14 Kanda Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan. otsuki@ chem.cst.nihon-u.ac.jp
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Ray U, Banerjee D, Liou JC, Lin CN, Lu TH, Sinha C. Iron(II) and nickel(II)-thiocyanato complexes of 1-alkyl-2-(arylazo)imidazole: single crystal X-ray structure of [Fe(MeaaiEt)2(NCS)2] (MeaaiEt=1-ethyl-2(p-tolylazo)imidazole) and [Ni(MeaaiMe)(NCS)2(H2O)2]·2DMF (MeaaiMe=1-methyl-2(p-tolylazo)imidazole). Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.11.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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