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Ahmed HA, Abolibda TZ, Ismail YAM, Almohammedi A, Aly KA, Ibrahim MS, Gomha SM. Novel maleic anhydride derivatives: liquid crystalline materials with enhanced mesomorphic and optical characteristics. Front Chem 2023; 11:1287883. [PMID: 38025055 PMCID: PMC10665853 DOI: 10.3389/fchem.2023.1287883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
A new class of liquid crystalline materials, 4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)phenyl 4-(alkoxy)benzoates (Mn), derived from maleic anhydride, was synthesized and studied for mesomorphic and optical properties. These materials consist of three derivatives with varying terminal flexible chain lengths (6-12 carbons) linked to the phenyl ring near the ester bond. The study employed differential scanning calorimetry and polarized optical microscopy (POM) to characterize the mesomorphic properties. Molecular structures were elucidated using elemental analysis, FT-IR, and NMR spectroscopy. The findings reveal that all the synthesized maleic anhydride derivatives exhibit enantiotropic nematic (N) mesophases. The insertion of the heterocyclic maleic anhydride moiety into the molecular structure influences the stability and range of the N phase. Additionally, entropy changes during N-isotropic transitions are of small magnitude and exhibit non-linear trends independent of the terminal alkoxy chain length (n). This suggests that the ester linkage group does not significantly promote molecular biaxiality, and the clearing temperature values are relatively high. By comparing the investigated materials with their furan derivatives found in existing literature, it was established that the substitution examined in this study induces the formation of nematic phases.
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Affiliation(s)
- Hoda A. Ahmed
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
- Chemistry Department, College of Sciences, Taibah University, Yanbu, Saudi Arabia
| | - Tariq Z. Abolibda
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia
| | - Yasser A. M. Ismail
- Department of Physics, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia
| | - Abdullah Almohammedi
- Department of Physics, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia
| | - K. A. Aly
- Department of Physics, Collage of Science and Arts Khylais, University of Jeddah, Khulais, Saudi Arabia
- Department of Physics, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut, Egypt
| | - Mohamed S. Ibrahim
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia
| | - Sobhi M. Gomha
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia
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Bamoniri A, Yaghmaeiyan N, Omidvar SMH. Nano TiCl4/γ-Al2O3: An efficient heterogeneous solid acid catalyst for rapid and solvent-less synthesis of azo dyes based on 2-naphthol at room temperature. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
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Masoud MS, Hemdan SS, Elsamra RMI. Synthesis, Ligating Properties, Thermal Behavior, Computational and Biological Studies of Some Azo-transition Metal Complexes. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02483-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
AbstractSynthesis of new Fe(III), Co(II), Ni(II), and Cu(II) complexes of two azo ligands; 1-(phenyldiazenyl) naphthalene-2-ol (sudan orange R, HL1), and sodium 2-hydroxy-5-[(E)-(4-nitrophenyl) diazenyl]benzoate (alizarin yellow GG, HL2) have been reported. Stoichiometries of 1:2 and 1:3 (M:L) of the synthesized complexes were approved by total-reflection X-ray fluorescence technique (TXRF) and by elemental analyses. The geometry of complexes (octahedral and square planar) was typified by various spectroscopic, thermal, and magnetic techniques. The ESR spectroscopy showed that Cu(II) complexes are of different isotropic and rhombic symmetries with the existence of Cu–Cu ions interaction. TGA, DTA, and DSC analyses supported the multi-stage thermal decomposition mechanisms, where the thermal breakdown is ended by the formation of metal oxide in most cases. Moreover, chemical reactivity modeling using the density functional theory (DFT) method with the B3LYP/6–31 basis set, showed that metal complexes are more biologically active than their precursor ligands. The calculated lipophilicity character for metal complexes is in the range of 33.8–37.5 eV. Docking results revealed high scoring energy for [Fe(HL2)3].H2O complex and moderate inhibition strength of [Cu(L1)2].H2O complex versus 1bqb, 3t88, and 4esw proteins. Ultimately, the extent of biological effectiveness was endorsed experimentally against four microbial strains. The results are guidelines for toxicological investigations.
Graphical Abstract
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Korčušková M, Petruš J, Lepcio P, Kučera F, Jančář J. Novel approaches for functionalization of polypropylene by maleimides. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ponhong K, Siriangkhawut W, Lee CY, Teshima N, Grudpan K, Supharoek SA. Dual determination of nitrite and iron by a single greener sequential injection spectrophotometric system employing a simple single aqueous extract from Areca catechu Linn. serving as a natural reagent. RSC Adv 2022; 12:20110-20121. [PMID: 35919603 PMCID: PMC9272472 DOI: 10.1039/d2ra03870f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 06/25/2022] [Indexed: 11/24/2022] Open
Abstract
Dual determination of nitrite and iron was proposed by using a single greener sequential injection (SI) spectrophotometric system employing a simple single aqueous extract from Areca catechu Linn. The extract served as a natural reagent to replace N-(1-naphthyl)ethylenediamine (NED) of the Griess reagent with nitrite and 1,10-phenanthroline with iron. The color products possessed analytical wavelengths at 430 and 560 nm, respectively. Conditions for the SI procedure were optimized using a univariate experimental design. Calibration ranges were up to 5.0 mg L−1 and 10.0 mg L−1 with limits of detection (LODs) of 0.04 mg L−1 and 0.05 mg L−1 for nitrite and iron(iii), respectively, and relative standard deviations (RSDs) being less than 3%. Recoveries of spiked standard nitrite and iron(iii) at 0.3 mg L−1 and 0.5 mg L−1 in water samples were 88 to 104% and 84 to 109%, respectively. The developed method successfully achieved dual determination of nitrite and total iron agreeing at a 95% confidence level with the reference methods of the conventional Griess assay and flame atomic absorption spectrometry (FAAS), respectively. The proposed method utilized locally available material from plants and serves the UN-SDGs. Dual determination of nitrite and iron was proposed by using a single greener sequential injection (SI) spectrophotometric system employing a simple single aqueous extract from Areca catechu Linn.![]()
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Affiliation(s)
- Kraingkrai Ponhong
- Multidisciplinary Research Unit of Pure and Applied Chemistry, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
| | - Watsaka Siriangkhawut
- Multidisciplinary Research Unit of Pure and Applied Chemistry, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
| | - Chang Young Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Norio Teshima
- Department of Applied Chemistry, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
| | - Kate Grudpan
- Department of Chemistry, Faculty of Science and Center of Excellence for Innovation in Analytical Science and Technology for Biodiversity-based Economic and Society, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sam-ang Supharoek
- Department of Medical Science, Mahidol University, Amnatcharoen Campus, Amnat Charoen 37000, Thailand
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
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Dhumad AM, Hassan QM, Fahad T, Emshary C, Raheem NA, Sultan H. Synthesis, structural characterization and optical nonlinear properties of two azo-β-diketones. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130196] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Sultan HA, Dhumad AM, Hassan QMA, Fahad T, Emshary CA, Raheem NA. Synthesis, characterization and the nonlinear optical properties of newly synthesized 4-((1,3-dioxo-1-phenylbutan-2-yl)diazenyl)benzenesulfonamide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 251:119487. [PMID: 33503561 DOI: 10.1016/j.saa.2021.119487] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
The dye of azo compound is prepared by coupling reaction of dizonium salt of sulfanilamide with benzoylacetone. The product is characterized by FTIR spectroscopy, Mass spectroscopy and 1H NMR spectroscopy. The geometries of the synthesized dye is optimized using B3LYP method and 6-31G (d,p) basis sets. Nonlinear optical properties are investigated theoretically by calculation of some quantum chemical descriptors using the DFT/B3LYP method with a 6-31G(d,p) basis set in comparison with urea as a standard. The UV-visible spectrum of synthesized azo dye are calculated using TD-DFT with B3LYP/6-31G(d,p) level. The nonlinear refractive index of the prepared dye is calculated via the diffraction ring patterns and Z-scan techniques using 473 nm visible, continuous wave laser light. The diffraction ring patterns are numerically simulated using the Fresnel-Kirchhoff theory with reasonable agreements. The property of optical limiting of the azo dye is tested.
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Affiliation(s)
- H A Sultan
- Department of Physics, College of Education for Pure Sciences, University of Basrah, Basrah 61001, Iraq
| | - Adil Muala Dhumad
- Department of Chemistry, College of Education for Pure Sciences, University of Basrah, 61001, Iraq
| | - Qusay M A Hassan
- Department of Physics, College of Education for Pure Sciences, University of Basrah, Basrah 61001, Iraq.
| | - Tarek Fahad
- Department of Chemistry, College of Education for Pure Sciences, University of Basrah, 61001, Iraq
| | - C A Emshary
- Department of Physics, College of Education for Pure Sciences, University of Basrah, Basrah 61001, Iraq
| | - Nabeel A Raheem
- Department of Chemistry, College of Education for Pure Sciences, University of Basrah, 61001, Iraq
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Alotaibi KM, Almethen AA, Beagan AM, Alfhaid LH, Ahamed M, El-Toni AM, Alswieleh AM. Poly(oligo(ethylene glycol) methyl ether methacrylate) Capped pH-Responsive Poly(2-(diethylamino)ethyl methacrylate) Brushes Grafted on Mesoporous Silica Nanoparticles as Nanocarrier. Polymers (Basel) 2021; 13:823. [PMID: 33800258 PMCID: PMC7962535 DOI: 10.3390/polym13050823] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 11/21/2022] Open
Abstract
In this paper, a new pH-responsive nanosystem based on mesoporous silica nanoparticles (MSNs) was developed for cancer therapy. Poly(2-(diethylamino) ethyl methacrylate) (PDEAEMA) was grafted on their outer surface and acts as a gatekeeper, followed by subsequent modification of the polymer by cysteine (MSN-PDEAEMA-Cys) and poly(oligo(ethylene glycol) methyl ether methacrylate) (MSN-PDEAEMA-Cys-POEGMEMA). The physicochemical properties of these nanocarriers were characterized using scanning and transmission electron microscopies (SEM and TEM), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and dynamic light scattering (DLS). The synthesized nanoparticles were well-dispersed with a diameter of ca. 200 nm. The obtained XPS results confirm the successful modification of MSN-PDEAEMA with Cys and POEGMEMA by increasing the peak intensity of C-O and C=O groups at 286.5 and 288.5 eV, respectively. An anti-cancer drug, doxorubicin (DOX), was encapsulated into the fabricated nanoplatform. The DOX release amount at physiological pH of 7.4 was limited (10%), while an accumulation drug release of ca. 35% was accomplished after 30 h in acidic media. The MTT cell line was used to assess the cytotoxicity of the unloaded and DOX-loaded fabricated nanoplatforms. Upon loading of DOX on these nanomaterials, they showed significant toxicity to human liver cancer cells. These results suggest that the prepared nano-structured materials showed good biocompatibility as well, and they can serve as nanocarriers for the delivery of anti-cancer drugs.
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Affiliation(s)
- Khalid M Alotaibi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Abeer M Beagan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Latifah H Alfhaid
- Department of Physics, College of Science, University of Ha'il, Ha'il 2240, Saudi Arabia
| | - Maqusood Ahamed
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed M El-Toni
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah M Alswieleh
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Aragaw TA, Aragaw BA. Synthesis and characterization of α-Fe2O3/γ-Fe2O3-nanoparticles from recyclable electro-coagulated sludge: insights and predictions for different application. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03553-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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10
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Chhetri A, Chettri S, Rai P, Mishra DK, Sinha B, Brahman D. Synthesis, characterization and computational study on potential inhibitory action of novel azo imidazole derivatives against COVID-19 main protease (M pro: 6LU7). J Mol Struct 2020; 1225:129230. [PMID: 32963413 PMCID: PMC7499073 DOI: 10.1016/j.molstruc.2020.129230] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 12/19/2022]
Abstract
Six azo imidazole derivatives have been synthesized and characterized by spectroscopic and analytical tools. Inhibitory potential against main protease (6LU7) have been investigated using computational techniques. Binding energy of the ligands has found in the range −6.7 Kcal/mole to −8.1 Kcal/mole. The order of the ligands towards the protein 6LU7 are L5> L4≈L6>L1>L2>L3.
A series of six novel imidazole anchored azo-imidazole derivatives (L1-L6) have been prepared by the simple condensation reaction of azo-coupled ortho-vaniline precursor with amino functionalised imidazole derivative and the synthesized derivatives (L1-L6) have been characterized by different analytical and spectroscopic techniques. Molecular docking studies were carried out to ascertain the inhibitory action of studied ligands (L1-L6) against the Main Protease (6LU7) of novel coronavirus (COVID-19). The result of the docking of L1-L6 showed a significant inhibitory action against the Main protease (Mpro) of SARS-CoV-2 and the binding energy (ΔG) values of the ligands (L1-L6) against the protein 6LU7 have found to be -7.7 Kcal/mole (L1), -7.4 Kcal/mole (L2), -6.7 Kcal/mole (L3), -7.9 Kcal/mole (L4), -8.1 Kcal/mole (L5) and -7.9 Kcal/mole (L6). Pharmacokinetic properties (ADME) of the ligands (L1-L6) have also been studied.
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Affiliation(s)
- Abhijit Chhetri
- Department of Microbiology, St. Joseph's College, Darjeeling-734104, India
| | - Sailesh Chettri
- Department of Chemistry, St. Joseph's College, Darjeeling-734104, India
| | - Pranesh Rai
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India
| | - Dipu Kumar Mishra
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India
| | - Biswajit Sinha
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India
| | - Dhiraj Brahman
- Department of Chemistry, St. Joseph's College, Darjeeling-734104, India
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Khayer K, Haque T. Density Functional Theory Calculation on the Structural, Electronic, and Optical Properties of Fluorene-Based Azo Compounds. ACS OMEGA 2020; 5:4507-4531. [PMID: 32175498 PMCID: PMC7066559 DOI: 10.1021/acsomega.9b03839] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/19/2020] [Indexed: 06/02/2023]
Abstract
In the present work, a theoretical study was carried out to study the molecular structure, harmonic vibrational frequencies, normal force field calculations, and Raman scattering activities for fluorene π-conjugation spacer containing azo-based dye named trans- and cis-bis(9H-fluoren-2-yl)diazene (AzoFL) at density functional theory using B3LYP (Becke-3-Lee-Yang-Parr) functional and 6-31+G(d,p) basis set. The theoretical calculations have also been performed with fluorene and the trans- and cis-isomers of diazene, difluorodiazene by the same method DFT-B3LYP/6-31+G(d,p) and basis set. The present DFT calculation shows that the trans-AzoFL is more stable than the cis-AzoFL by 16.33 kcal/mol. We also report the results of new assignments of vibrational frequencies obtained on the basis of the present calculations. Time-dependent DFT (TD-DFT) and ZIndo calculations have been performed to study the UV-vis absorption behavior and frontier molecular orbitals for the above-mentioned compounds. The UV-vis spectrum from TD-DFT calculation shows the π-π* transition bands at λmax 423.53 nm (εmax 6.0 × 104 M-1 cm-1) and at λmax 359.45 nm (εmax 1.7 × 104 M-1 cm-1), respectively, for trans- and cis-AzoFL. Compared to parent trans-diazene (λmax 178.97 nm), a significant variation to longer wavelength (∼245 nm) is observed due to the incorporation of the fluorene (FL) ring into the -N=N- backbone. The co-planarity of the two FL rings with the longer N=N bond length compared to the unsubstituted parent diazene indicates the effective red shift due to the extended π-conjugation in trans-AzoFL. The nonplanarity of cis-AzoFL (48.1° tilted about the C-N bond relative to the planar N=N-C bond) reflects its ∼64 nm blue shift compared to that of trans-counterpart.
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Affiliation(s)
- Khurshida Khayer
- Department of Chemistry, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
| | - Tahmina Haque
- Department of Chemistry, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
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Kolawole OA, Banjo S. In Vitro Biological Estimation of 1,2,3-Triazolo[4,5-d]pyrimidine Derivatives as Anti-breast Cancer Agent: DFT, QSAR and Docking Studies. Curr Pharm Biotechnol 2020; 21:70-78. [DOI: 10.2174/1389201020666190904163003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/03/2019] [Accepted: 08/18/2019] [Indexed: 11/22/2022]
Abstract
Background & Objective:
Series of synthesized molecular compounds were considered as
anti-breast cancer. The molecular descriptors which describe the microbial activities of the studied
compounds were calculated using theoretical approach.
Methods:
The calculated parameters obtained EHOMO (eV), ELUMO (eV), dipole moment (Debye), log P,
molecular weight (amu), HBA, HBD, Vol and Ovality were screened. The obtained calculated descriptors
were used to develop QSAR model for prediction of experimental inhibition concentration
(IC50) using SPSS and Gretl software packages for multiple linear regression (MLR) and MATLAB for
the artificial neural network (ANN).
Results:
From this statistical analysis, MLR and ANN were observed to be predictive, however, ANNQSAR
model predicted more efficiently than MLR.
Conclusion:
Furthermore, molecular docking study was executed with breast cancer cell line
(PDB ID: 1hi7); it was observed that BS20 with binding energy of -7.0 kcal/mol bounded more efficiently
than other compounds also, it inhibited more than the standard used (5-FU).
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Affiliation(s)
- Oyebamiji A. Kolawole
- Computational Chemistry Laboratory, Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
| | - Semire Banjo
- Computational Chemistry Laboratory, Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
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Wang Y, Yang Z, Xia T, Pan G, Zhang L, Chen H, Zhang J. Azo‐Group‐Containing Organic Compounds as Electrode Materials in Full‐Cell Lithium‐Ion Batteries. ChemElectroChem 2019. [DOI: 10.1002/celc.201901267] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yingqian Wang
- College of Material Science and EngineeringCentral South University of Forestry and Technology Changsha 410000 Hunan China
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
- Research Centre of Flexible Printed Electronic TechnologyHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
| | - Zhixiong Yang
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
- Research Centre of Flexible Printed Electronic TechnologyHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
| | - Tianlai Xia
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
- Research Centre of Flexible Printed Electronic TechnologyHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
| | - Guangxing Pan
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
- Research Centre of Flexible Printed Electronic TechnologyHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
| | - Ling Zhang
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
- Research Centre of Flexible Printed Electronic TechnologyHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
| | - Hong Chen
- College of Material Science and EngineeringCentral South University of Forestry and Technology Changsha 410000 Hunan China
- School of Materials Science and Energy EngineeringFoshan University Foshan 528000 Guangdong China
| | - Jiaheng Zhang
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
- Research Centre of Flexible Printed Electronic TechnologyHarbin Institute of Technology (Shenzhen) Shenzhen 518055 Guangdong China
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Morrison JJ, Brandt VK, Yeates SG. Comment on: Synthesis of New Azo Compounds Based on N-(4-Hydroxyphenyl)maleimide and N-(4-Methylphenyl)maleimide. Molecules 2010, 15, 7498-7508. Molecules 2019; 24:molecules24122319. [PMID: 31234570 PMCID: PMC6630594 DOI: 10.3390/molecules24122319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 06/12/2019] [Indexed: 11/17/2022] Open
Abstract
The synthesis of (E)-phenylazo-3-N-(4-hydroxyphenyl)maleimide (1) using a procedure previously reported in Molecules is deemed to be erroneous. A detailed re-investigation of the earlier work suggests that the spectral data for key intermediates and the final product, (1), was mis-assigned. We conclude that compound (1) was not synthesized, but rather an unusual ring opening reaction of the maleimide unit of the starting material, N-(4-hydroxyphenyl)maleimide (2) leading to the generation of (Z)-4-((4-hydroxyphenyl)amino)-4-oxobut-2-enoic acid, (3) was observed instead. Examination of the original experimental data reveals systematic errors in the reporting of all of the combustion microanalytical data. Overall, the present investigation suggests that errors in the interpretation of spectral data, falsification of analytical data and selective editing of experimental results raise questions over the veracity of the work presented in the original paper.
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Affiliation(s)
- John J Morrison
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
| | - Viktoria K Brandt
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
| | - Stephen G Yeates
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
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Mohamed ME, Saad GR, Eid AI, Elazabawy OE, Elenien OA, Naoum MM, Abou El-khair MT. Synthesis and characterization of polypropylene grafted with p- hydroxy-N-phenyl maleimide. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1752-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Im S, Lee J, Park D, Park A, Kim YM, Kim WJ. Hypoxia-Triggered Transforming Immunomodulator for Cancer Immunotherapy via Photodynamically Enhanced Antigen Presentation of Dendritic Cell. ACS NANO 2019; 13:476-488. [PMID: 30563320 DOI: 10.1021/acsnano.8b07045] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A key factor for successful cancer immunotherapy (CIT) is the extent of antigen presentation by dendritic cells (DCs) that phagocytize tumor-associated antigens (TAA) in the tumor site and migrate to tumor draining lymph nodes (TDLN) for the activation of T cells. Although various types of adjuvant delivery have been studied to enhance the activity of the DCs, poor delivery efficiency and depleted population of tumor infiltrating DCs have limited the efficacy of CIT. Herein, we report a hypoxia-responsive mesoporous silica nanocarrier (denoted as CAGE) for an enhanced CIT assisted by photodynamic therapy (PDT). In this study, CAGE was designed as a hypoxia-responsive transforming carrier to improve the intracellular uptake of nanocarriers and the delivery of adjuvants to DCs. Furthermore, PDT was exploited for the generation of immunogenic debris and recruitment of DCs in a tumor site, followed by enhanced antigen presentation. Finally, a significant inhibition of tumor growth was observed in vivo, signifying that the PDT would be a promising solution for DC-based immunotherapy.
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Affiliation(s)
- Sooseok Im
- School of Interdisciplinary Bioscience and Bioengineering , Pohang University of Science and Technology (POSTECH) , Jigok-ro 64 , Nam-gu, Pohang 37666 , Republic of Korea
| | - Junseok Lee
- Department of Chemistry , Pohang University of Science and Technology (POSTECH) , Cheongam-ro 77 , Nam-gu, Pohang 37673 , Republic of Korea
| | - Dongsik Park
- Department of Chemistry , Pohang University of Science and Technology (POSTECH) , Cheongam-ro 77 , Nam-gu, Pohang 37673 , Republic of Korea
| | - Areum Park
- Division of Integrative Biosciences and Biotechnology , Pohang University of Science and Technology (POSTECH) , Jigok-ro 64 , Nam-gu, Pohang 37666 , Republic of Korea
| | - You-Me Kim
- Graduate School of Medical Science and Engineering , Korea Advanced Institute of Science and Technology , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
| | - Won Jong Kim
- School of Interdisciplinary Bioscience and Bioengineering , Pohang University of Science and Technology (POSTECH) , Jigok-ro 64 , Nam-gu, Pohang 37666 , Republic of Korea
- Department of Chemistry , Pohang University of Science and Technology (POSTECH) , Cheongam-ro 77 , Nam-gu, Pohang 37673 , Republic of Korea
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17
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Xu H, Bijleveld J, Hedge M, Dingemans T. Synthesis and characterization of aromatic-PDMS segmented block copolymers and their shape-memory performance. Polym Chem 2019. [DOI: 10.1039/c9py00682f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic-PDMS (AB)n multiblock copolymers: a one-component polymeric system that combines excellent mechanical properties with shape memory capability.
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Affiliation(s)
- Hongli Xu
- School of Innovation and Entrepreneurship
- Southern University of Science and Technology
- 518055 Shenzhen
- China
- Faculty of Aerospace Engineering
| | - Johan Bijleveld
- Faculty of Aerospace Engineering
- Delft University of Technology
- 2629 HS Delft
- The Netherlands
| | - Maruti Hedge
- Department of Applied Physical Sciences
- University of North Carolina at Chapel Hill
- Chapel Hill
- USA
| | - Theo Dingemans
- Faculty of Aerospace Engineering
- Delft University of Technology
- 2629 HS Delft
- The Netherlands
- Department of Applied Physical Sciences
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18
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Luo C, Ji X, Hou S, Eidson N, Fan X, Liang Y, Deng T, Jiang J, Wang C. Azo Compounds Derived from Electrochemical Reduction of Nitro Compounds for High Performance Li-Ion Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706498. [PMID: 29687487 DOI: 10.1002/adma.201706498] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/23/2018] [Indexed: 06/08/2023]
Abstract
Organic compounds are desirable alternatives for sustainable lithium-ion battery electrodes. However, the electrochemical properties of state-of-the-art organic electrodes are still worse than commercial inorganic counterparts. Here, a new chemistry is reported based on the electrochemical conversion of nitro compounds to azo compounds for high performance lithium-ion batteries. 4-Nitrobenzoic acid lithium salt (NBALS) is selected as a model nitro compound to systemically investigate the structure, lithiation/delithiation mechanism, and electrochemical performance of nitro compounds. NBALS delivers an initial capacity of 153 mAh g-1 at 0.5 C and retains a capacity of 131 mAh g-1 after 100 cycles. Detailed characterizations demonstrate that during initial electrochemical lithiation, the nitro group in crystalline NBALS is irreversibly reduced into an amorphous azo compound. Subsequently, the azo compound is reversibly lithiated/delithiated in the following charge/discharge cycles with high electrochemical performance. The lithiation/delithiation mechanism of azo compounds is also validated by directly using azo compounds as electrode materials, which exhibit similar electrochemical performance to nitro compounds, while having a much higher initial Coulombic efficiency. Therefore, this work proves that nitro compounds can be electrochemically converted to azo compounds for high performance lithium-ion batteries.
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Affiliation(s)
- Chao Luo
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Xiao Ji
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Singyuk Hou
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Nico Eidson
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Xiulin Fan
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Yujia Liang
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Tao Deng
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Jianjun Jiang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Chunsheng Wang
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA
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19
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Luo C, Xu GL, Ji X, Hou S, Chen L, Wang F, Jiang J, Chen Z, Ren Y, Amine K, Wang C. Reversible Redox Chemistry of Azo Compounds for Sodium-Ion Batteries. Angew Chem Int Ed Engl 2018; 57:2879-2883. [DOI: 10.1002/anie.201713417] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Chao Luo
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Gui-Liang Xu
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Xiao Ji
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
- School of Optical and Electronic Information; Huazhong University of Science and Technology; Wuhan Hubei 430074 China
| | - Singyuk Hou
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Long Chen
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Fei Wang
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Jianjun Jiang
- School of Optical and Electronic Information; Huazhong University of Science and Technology; Wuhan Hubei 430074 China
| | - Zonghai Chen
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Yang Ren
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Khalil Amine
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
- IRMC; Imam Abdulrahman Bin Faisal University (IAU); Dammam Saudi Arabia
| | - Chunsheng Wang
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
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20
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Luo C, Xu GL, Ji X, Hou S, Chen L, Wang F, Jiang J, Chen Z, Ren Y, Amine K, Wang C. Reversible Redox Chemistry of Azo Compounds for Sodium-Ion Batteries. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713417] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Luo
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Gui-Liang Xu
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Xiao Ji
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
- School of Optical and Electronic Information; Huazhong University of Science and Technology; Wuhan Hubei 430074 China
| | - Singyuk Hou
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Long Chen
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Fei Wang
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
| | - Jianjun Jiang
- School of Optical and Electronic Information; Huazhong University of Science and Technology; Wuhan Hubei 430074 China
| | - Zonghai Chen
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Yang Ren
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Khalil Amine
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne IL 60439 USA
- IRMC; Imam Abdulrahman Bin Faisal University (IAU); Dammam Saudi Arabia
| | - Chunsheng Wang
- Department of Chemical and Biomolecular Engineering; University of Maryland; College Park MD 20740 USA
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21
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Azo compounds as a family of organic electrode materials for alkali-ion batteries. Proc Natl Acad Sci U S A 2018; 115:2004-2009. [PMID: 29440381 DOI: 10.1073/pnas.1717892115] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Organic compounds are desirable for sustainable Li-ion batteries (LIBs), but the poor cycle stability and low power density limit their large-scale application. Here we report a family of organic compounds containing azo group (N=N) for reversible lithiation/delithiation. Azobenzene-4,4'-dicarboxylic acid lithium salt (ADALS) with an azo group in the center of the conjugated structure is used as a model azo compound to investigate the electrochemical behaviors and reaction mechanism of azo compounds. In LIBs, ADALS can provide a capacity of 190 mAh g-1 at 0.5 C (corresponding to current density of 95 mA g-1) and still retain 90%, 71%, and 56% of the capacity when the current density is increased to 2 C, 10 C, and 20 C, respectively. Moreover, ADALS retains 89% of initial capacity after 5,000 cycles at 20 C with a slow capacity decay rate of 0.0023% per cycle, representing one of the best performances in all organic compounds. Superior electrochemical behavior of ADALS is also observed in Na-ion batteries, demonstrating that azo compounds are universal electrode materials for alkali-ion batteries. The highly reversible redox chemistry of azo compounds to alkali ions was confirmed by density-functional theory (DFT) calculations. It provides opportunities for developing sustainable batteries.
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22
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Graphene-based label-free electrochemical aptasensor for rapid and sensitive detection of foodborne pathogen. Anal Bioanal Chem 2017; 409:6893-6905. [PMID: 29030671 DOI: 10.1007/s00216-017-0654-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/11/2017] [Accepted: 09/18/2017] [Indexed: 12/21/2022]
Abstract
Reduced graphene oxide (rGO) has emerged as a promising nanomaterial for reliable detection of pathogenic bacteria due to its exceptional properties such as ultrahigh electron transfer ability, large surface to volume ratio, biocompatibility, and its unique interactions with DNA bases of the aptamer. In this study, rGO-azophloxine (AP) nanocomposite aptasensor was developed for a sensitive, rapid, and robust detection of foodborne pathogens. Besides providing an excellent conductive and soluble rGO nanocomposite, the AP dye also acts as an electroactive indicator for redox reactions. The interaction of the label-free single-stranded deoxyribonucleic acid (ssDNA) aptamer with the test organism, Salmonella enterica serovar Typhimurium (S. Typhimurium), was monitored by differential pulse voltammetry analysis, and this aptasensor showed high sensitivity and selectivity for whole-cell bacteria detection. Under optimum conditions, this aptasensor exhibited a linear range of detection from 108 to 101 cfu mL-1 with good linearity (R 2 = 0.98) and a detection limit of 101 cfu mL-1. Furthermore, the developed aptasensor was evaluated with non-Salmonella bacteria and artificially spiked chicken food sample with S. Typhimurium. The results demonstrated that the rGO-AP aptasensor possesses high potential to be adapted for the effective and rapid detection of a specific foodborne pathogen by an electrochemical approach. Graphical abstract Fabrication of graphene-based nanocomposite aptasensor for detection of foodborne pathogen.
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23
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Lysenko SN, Ivanenko SY, Astaf’eva SA, Yakushev RM. Titrimetric determination of maleinimide and acrylate groups in organic compounds. JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1134/s1061934817100100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Synthesis of 3-chloro-1-substituted aryl pyrrolidine-2,5-dione derivatives: discovery of potent human carbonic anhydrase inhibitors. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1865-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Abad JM, Bravo I, Pariente F, Lorenzo E. Multi-tasking Schiff base ligand: a new concept of AuNPs synthesis. Anal Bioanal Chem 2016; 408:2329-38. [PMID: 26922338 DOI: 10.1007/s00216-016-9329-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/04/2016] [Accepted: 01/12/2016] [Indexed: 11/26/2022]
Abstract
Multi-tasking 3,4-dihydroxysalophen Schiff base tetradentate ligand (3,4-DHS) as reductant, stabilizer, and catalyst in a new concept of gold nanoparticles (AuNPs) synthesis is demonstrated. 3,4-DHS is able to reduce HAuCl4 in water, acting also as capping agent for the generation of stable colloidal suspensions of Schiff base ligand-AuNPs assemblies of controlled size by providing a robust coating to AuNPs, within a unique reaction step. Once deposited on carbon electrodes, 3,4-DHS-AuNPs assemblies show a potent electrocatalytic effect towards hydrazine oxidation and hydrogen peroxide oxidation/reduction.
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Affiliation(s)
- Jose Maria Abad
- Department of Analytical Chemistry, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049, Madrid, Spain
| | - Iria Bravo
- Department of Analytical Chemistry, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049, Madrid, Spain
- IMDEA Nanociencia, Calle Faraday 9, 28049, Madrid, Spain
| | - Felix Pariente
- Department of Analytical Chemistry, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049, Madrid, Spain
- IMDEA Nanociencia, Calle Faraday 9, 28049, Madrid, Spain
| | - Encarnación Lorenzo
- Department of Analytical Chemistry, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049, Madrid, Spain.
- IMDEA Nanociencia, Calle Faraday 9, 28049, Madrid, Spain.
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26
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Affiliation(s)
- Ramesh Chingle
- Département de Chimie, Université de Montréal, C.P.
6128, Succursale Centre-Ville, Montréal, Québec Canada H3C 3J7
| | - William D. Lubell
- Département de Chimie, Université de Montréal, C.P.
6128, Succursale Centre-Ville, Montréal, Québec Canada H3C 3J7
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27
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Walekar BJ, Mane SR, Bhosale PN. Novel Synthesis and Characterization of N-Heterocyclic Azo Dyes with Acrylic Polymer for Thin Film Coatings. ADVANCES IN POLYMER TECHNOLOGY 2015. [DOI: 10.1002/adv.21613] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Balaji J. Walekar
- Organic Research Laboratory; Department of Chemistry; Smt. Kusumtai Rajarambapu Patil Kanya Mahavidyalya; Islampur 415 409 Maharashtra India
| | - Sambhaji R. Mane
- Organic Research Laboratory; Department of Chemistry; Smt. Kusumtai Rajarambapu Patil Kanya Mahavidyalya; Islampur 415 409 Maharashtra India
| | - Popatrao N. Bhosale
- Materials Research Laboratory; Shivaji University; Kolhapur Maharashtra India
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28
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Oktay K, Köse LP, Şendil K, Gültekin MS, Gülçin İ, Supuran CT. The synthesis of (Z)-4-oxo-4-(arylamino)but-2-enoic acids derivatives and determination of their inhibition properties against human carbonic anhydrase I and II isoenzymes. J Enzyme Inhib Med Chem 2015; 31:939-45. [PMID: 26308288 DOI: 10.3109/14756366.2015.1071808] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The synthesis of (Z)-4-oxo-4-(arylamino)but-2-enoic acid (4) derivatives containing structural characteristics that can be used for the synthesis of several active molecules, is presented. Some of the butenoic acid derivatives (4a, 4c, 4e, 4i, 4j, 4k) are synthesized following literature procedures and at the end of the reaction. In addition, structures of all synthesized derivatives (4a-4m) were determined by (1)H-NMR, (13)C-NMR and IR spectroscopy. Carbonic anhydrase is a metalloenzyme involved in many crucial physiologic processes as it catalyzes a simple but fundamental reaction, the reversible hydration of carbon dioxide to bicarbonate and protons. Significant results were obtained by evaluating the enzyme inhibitory activities of these derivatives against human carbonic anhydrase hCA I and II isoenzymes (hCA I and II). Butenoic acid derivatives (4a-4m) strongly inhibited hCA I and II with Kis in the low nanomolar range of 1.85 ± 0.58 to 5.04 ± 1.46 nM against hCA I and in the range of 2.01 ± 0.52 to 2.94 ± 1.31 nM against hCA II.
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Affiliation(s)
- Koray Oktay
- a Faculty of Science, Department of Chemistry , Ataturk University , Erzurum , Turkey
| | - Leyla Polat Köse
- a Faculty of Science, Department of Chemistry , Ataturk University , Erzurum , Turkey
| | - Kıvılcım Şendil
- b Faculty of Science and Arts, Department of Chemistry , Kafkas University , Kars , Turkey
| | | | - İlhami Gülçin
- a Faculty of Science, Department of Chemistry , Ataturk University , Erzurum , Turkey .,c Department of Zoology , College of Science, King Saud University , Riyadh , Saudi Arabia
| | - Claudiu T Supuran
- d Dipartimento di Chimica Ugo Schiff, Università degli Studi di Firenze , Sesto Fiorentino (Firenze) , Italy , and.,e Neurofarba Department, Section of Pharmaceutical and Nutriceutical Sciences, Università degli Studi di Firenze , Sesto Fiorentino (Florence) , Italy
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29
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Wu J, Xi Y, McCandless GT, Kulikov OV, Menon R, Novak BM. Synthesis and characterization of a novel fluorinated bismaleimide via a nucleophilic addition–elimination reaction and its polymeric networks. RSC Adv 2015. [DOI: 10.1039/c5ra13771c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A novel fluorinated bismaleimide, OFCP-BMI, was designed and readily synthesized via the nucleophilic addition–elimination reaction of octafluorocyclopentene with maleimide-functionalized phenol.
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Affiliation(s)
- Jingbo Wu
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Yang Xi
- Department of Science and Engineering
- University of Texas at Dallas
- Richardson
- USA
| | - Gregory T. McCandless
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Oleg V. Kulikov
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Remya Menon
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Bruce M. Novak
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
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30
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Wang Y, Zhao J, Yuan Y, Liu S, Feng Z, Zhao Y. Synthesis of maleimido-substituted aromatic s-triazine and its application in flame-retarded epoxy resins. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2013.12.015] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Dubey SP, Dwivedi AD, Sillanpää M, Kwon YN, Lee C. Single-step green synthesis of imine-functionalized carbon spheres and their application in uranium removal from aqueous solution. RSC Adv 2014. [DOI: 10.1039/c4ra06890d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Phosphorous pentoxide mediated synthesis of 5-HMF in ionic liquid at low temperature. Carbohydr Res 2011; 346:2145-8. [DOI: 10.1016/j.carres.2011.08.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 08/04/2011] [Accepted: 08/05/2011] [Indexed: 11/23/2022]
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33
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Rusu E, Shova S, Rusu G. 1-[(E)-4-(Phenyl-diazen-yl)phen-yl]-3-pyrroline-2,5-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2333. [PMID: 22065404 PMCID: PMC3200752 DOI: 10.1107/s160053681103193x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 08/07/2011] [Indexed: 11/10/2022]
Abstract
The title compound, C(16)H(11)N(3)O(2), displays a trans configuration with respect to the azo group. The mol-ecule is non-planar; the maleimide ring forms a dihedral angle of 42.35 (4)° with the benzene ring bonded to its N atom and the mean plane of this benzene ring is rotated by 21.46 (8)° with respect to the azo group mean plane, which, in turn, forms a dihedral angle of 24.48 (7)° with the 'terminal' benzene ring. Mol-ecules in the crystal are π-π stacked along the [100] direction with a mean inter-planar distance of 3.857 (1) Å. In addition, C-H⋯O inter-actions link them into double layers parallel to the ac plane.
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