1
|
Požar J, Cvetnić M, Usenik A, Cindro N, Horvat G, Leko K, Modrušan M, Tomišić V. The Role of Triazole and Glucose Moieties in Alkali Metal Cation Complexation by Lower-Rim Tertiary-Amide Calix[4]arene Derivatives. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020470. [PMID: 35056784 PMCID: PMC8780480 DOI: 10.3390/molecules27020470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 11/16/2022]
Abstract
The binding of alkali metal cations with two tertiary-amide lower-rim calix[4]arenes was studied in methanol, N,N-dimethylformamide, and acetonitrile in order to explore the role of triazole and glucose functionalities in the coordination reactions. The standard thermodynamic complexation parameters were determined microcalorimetrically and spectrophotometrically. On the basis of receptor dissolution enthalpies and the literature data, the enthalpies for transfer of reactants and products between the solvents were calculated. The solvent inclusion within a calixarene hydrophobic basket was explored by means of 1H NMR spectroscopy. Classical molecular dynamics of the calixarene ligands and their complexes were carried out as well. The affinity of receptors for cations in methanol and N,N-dimethylformamide was quite similar, irrespective of whether they contained glucose subunits or not. This indicated that sugar moieties did not participate or influence the cation binding. All studied reactions were enthalpically controlled. The peak affinity of receptors for sodium cation was noticed in all complexation media. The complex stabilities were the highest in acetonitrile, followed by methanol and N,N-dimethylformamide. The solubilities of receptors were greatly affected by the presence of sugar subunits. The medium effect on the affinities of calixarene derivatives towards cations was thoroughly discussed regarding the structural properties and solvation abilities of the investigated solvents.
Collapse
Affiliation(s)
- Josip Požar
- Correspondence: (J.P.); (V.T.); Tel.: +385-1-46-06-133 (J.P.); +385-1-46-06-136 (V.T.)
| | | | | | | | | | | | | | - Vladislav Tomišić
- Correspondence: (J.P.); (V.T.); Tel.: +385-1-46-06-133 (J.P.); +385-1-46-06-136 (V.T.)
| |
Collapse
|
2
|
Kutasevich AV, Niktarov AS, Uvarova ES, Karnoukhova VA, Mityanov VS. A novel approach to bis(1,3-azol-2-yl)acetonitriles and bis(1,3-azol-2-yl)methanes via the [3 + 2]-dipolar cycloaddition of imidazole N-oxides and 2-heteroaryl-3,3-dimethylacrylonitriles. Org Biomol Chem 2021; 19:8988-8998. [PMID: 34596641 DOI: 10.1039/d1ob01441b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic approach for obtaining previously unknown bis(1,3-azol-2-yl)acetonitriles and bis(1,3-azol-2-yl)methanes has been developed. It is based on 1,3-dipolar cycloaddition between 2-unsubstituted imidazole N-oxides and 2-(1,3-azol-2-yl)-3,3-dimethylacrylonitriles, which are easily available through the condensation of (1,3-azol-2-yl)acetonitriles with acetone. The method allows for the construction of various unsymmetric derivatives based on imidazole, oxazole, thiazole, and 1,3,4-thiadiazole cyclic molecules. Its potential has been demonstrated via the synthesis of 24 diverse derivatives with yields of 29-92%. Bis(1,3-azol-2-yl)acetonitriles can be converted to the corresponding bis(1,3-azol-2-yl)methanes via simple acid hydrolysis followed by subsequent spontaneous decarboxylation at nearly quantitative yields.
Collapse
Affiliation(s)
- Anton V Kutasevich
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| | - Anton S Niktarov
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| | - Ekaterina S Uvarova
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| | - Valentina A Karnoukhova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Moscow, 119991, Russian Federation
| | - Vitaly S Mityanov
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| |
Collapse
|
3
|
Rohman R, Kar R. Tuning the antioxidant property of potential calixdrug calix[4]tyrosol: role of aza and thia linkages. Struct Chem 2021. [DOI: 10.1007/s11224-021-01794-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
4
|
Barman SK, Mondal T, Koley D, Lloret F, Mukherjee R. A phenoxo-bridged dicopper(ii) complex as a model for phosphatase activity: mechanistic insights from a combined experimental and computational study. Dalton Trans 2017; 46:4038-4054. [PMID: 28271106 DOI: 10.1039/c6dt03514k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A μ-phenoxo-bis(μ2-1,3-acetato)-bridged dicopper(ii) complex [Cu(L1)(μ-O2CMe)2][NO3] (1) has been synthesized from the perspective of modeling phosphodiesterase activity. Structural characterization was done initially with 1·3Et2O (vapour diffusion of Et2O into MeOH solution of 1; poor crystal quality) and finally with its perchlorate salt [Cu(L1)(μ-O2CMe)2][ClO4]·1.375MeCN·0.25H2O, crystallized from vapour diffusion of n-pentane into a MeCN-MeOH mixture (comparatively better crystal quality). An asymmetric unit of such a crystal contains two independent molecules of compositions [Cu(L1)(μ-O2CMe)2][ClO4] and [Cu(L1)(μ-O2CMe)2(MeCN)][ClO4] (coordinated MeCN with 0.75 occupancy), and two molecules of MeCN and H2O (each H2O molecule with 0.25 occupancy) as the solvent of crystallization. These two cations, each having five-coordinate (μ-phenoxo)bis(μ-acetato)-bridged CuII ions, differ by only the coordination environment of only one CuII ion, which has a weakly coordinated acetonitrile molecule in its sixth position. Temperature-dependent magnetic studies on 1 reveal that the copper(ii) centres are antiferromagnetically coupled with the exchange-coupling constant J = -124(1) cm-1. Theoretically calculated J = -126.51 cm-1, employing a broken-symmetry DFT approach, is in excellent agreement with the experimental value. The dicopper(ii) complex has been found to be catalytically efficient in the hydrolysis of 2-hydroxypropyl-p-nitrophenylphosphate (HPNP). Detailed kinetic experiments and solution studies (potentiometry, species distribution and ESI-MS) were performed to elucidate the reaction mechanism. DFT calculations were performed to discriminate between different possible mechanistic pathways. The free-energy barrier for HPNP hydrolysis catalyzed by 1 is comparable to that obtained from the experimentally-determined value. The involvement of non-covalent (hydrogen-bonding) interaction has also been probed by DFT calculations. The activity of 1 is found to be the highest, compared to the structurally-characterized Mn, Co, Ni and Zn complexes of L1(-) reported earlier, under identical experimental conditions, in which each metal centre is six-coordinate.
Collapse
Affiliation(s)
- Suman K Barman
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India. and Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| | - Totan Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| | - Debasis Koley
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| | - Francesc Lloret
- Departament de Química Inorgànica/Fundació General de la Universitat de València (FGUV)/Instituto de Ciencia, Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980-Paterna, València, Spain
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India. and Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| |
Collapse
|
5
|
Hussain N, Joshi P, Ali SR, Bhardwaj VK. Comparative structure activity relationship for heterogeneous phosphatase-like catalytic activities of one-dimensional Cu(ii) coordination polymers. RSC Adv 2016. [DOI: 10.1039/c6ra11102e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A structure activity relationship for heterogeneous phosphatase-like activities of one-dimensional Cu(ii) coordination polymers, has been studied. Complex 1 exhibits maximum activity due to coordinated water molecules, shorter metal–metal distance and exposed metal centers.
Collapse
Affiliation(s)
- Navid Hussain
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| | - Pooja Joshi
- Department of Chemistry
- D.S.B. Campus
- Kumaun University
- Nainital
- India
| | - Shah Raj Ali
- Department of Chemistry
- D.S.B. Campus
- Kumaun University
- Nainital
- India
| | - Vimal K. Bhardwaj
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| |
Collapse
|
6
|
Meenakshi C, Jayabal P, Ramakrishnan V. Determination of association constant of host-guest supramolecular complex (molecular recognition of carbamazepine, antiseizure drug, with calix(4)arene). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:707-711. [PMID: 26163795 DOI: 10.1016/j.saa.2015.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 06/29/2015] [Accepted: 07/01/2015] [Indexed: 06/04/2023]
Abstract
The thermodynamic property of the host-guest, inclusion complex formed between p-t-butyl calix(4)arene which is a supramolecule, and the antiseizure drug, carbamazepine was studied. p-t-Butyl calix(4)arene has been used as a host molecule and carbamazepine as a guest molecule. Optical absorption spectral studies were carried out to investigate the molecular recognition properties of p-t-butyl calix(4)arene with carbamazepine. The stochiometry of the host-guest complexes formed and the association constant were determined. An interesting 1:2 stochiometric host-guest complex was formed. Job's continuous method of variation and Benesi-Hildebrand expression were used for the determination of binding constant and the stochiometry of the host-guest complex formed. Molecular dimension of the host molecule plays a vital role in the formation of the host-guest stochiometric complexes.
Collapse
Affiliation(s)
- C Meenakshi
- Department of Chemistry, Shri Meenakshi Government College for Women (Autonomous), Madurai 625 002, India.
| | - P Jayabal
- Department of Physical Sciences, Bannari Amman Institute of Technology, Sathyamangalam, Erode 638 401, India
| | - V Ramakrishnan
- Department of Laser Studies, School of Physics, Madurai Kamaraj University, Madurai 625 021, India.
| |
Collapse
|
7
|
Guo N, Zhong JY, Chen SL, Liu JQ, Min Q, Shi RX. Experimental and theoretical studies of hydrolysis of nerve agent sarin by binuclear zinc biomimetic catalysts. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.05.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
8
|
Szpunar M, Loska R. A General Synthesis of Bis(o-azaheteroaryl)methane Derivatives fromN-Oxides of Azines and Azoles. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
9
|
Bakić MT, Jadreško D, Hrenar T, Horvat G, Požar J, Galić N, Sokol V, Tomaš R, Alihodžić S, Žinić M, Frkanec L, Tomišić V. Fluorescent phenanthridine-based calix[4]arene derivatives: synthesis and thermodynamic and computational studies of their complexation with alkali-metal cations. RSC Adv 2015. [DOI: 10.1039/c5ra01905b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The novel calix[4]arenes exhibiting prominent fluorescence were shown to be potential sensitive fluorimetric cation sensors. Comprehensive experimental and computational studies provided detailed insight into the corresponding complexation reactions.
Collapse
Affiliation(s)
- Marina Tranfić Bakić
- Department of Chemistry and Biochemistry
- Faculty of Food Technology and Biotechnology
- University of Zagreb
- 10000 Zagreb
- Croatia
| | | | - Tomica Hrenar
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | - Gordan Horvat
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | - Josip Požar
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | - Nives Galić
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | - Vesna Sokol
- Division of Chemistry
- Faculty of Chemistry and Technology
- University of Split
- 21000 Split
- Croatia
| | - Renato Tomaš
- Division of Chemistry
- Faculty of Chemistry and Technology
- University of Split
- 21000 Split
- Croatia
| | | | - Mladen Žinić
- Croatian Academy of Sciences and Arts
- Zagreb and Baltazar University of Applied Sciences
- 10290 Zaprešić
- Croatia
| | | | - Vladislav Tomišić
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| |
Collapse
|
10
|
Meenakshi C, Jayabal P, Ramakrishnan V. Molecular recognition study of Carbamazepine, antiseizure drug, by p-t-butyl calix(8)arene. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 122:447-450. [PMID: 24322761 DOI: 10.1016/j.saa.2013.11.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/28/2013] [Accepted: 11/10/2013] [Indexed: 06/03/2023]
Abstract
The formation of inclusion complex of Carbamazepine, a antiseizure drug molecule, with the supra molecule, p-t-butyl calix(8)arene was studied. p-t-Butyl calix(8)arene was the host molecule and Carbamazepine was the guest molecule. Optical absorption spectral studies were carried out to study the molecular recognition properties of p-t-butyl calix(8)arene with Carbamazepine. The stochiometry of the host-guest complex and the binding constant were determined.
Collapse
Affiliation(s)
- C Meenakshi
- Department of Chemistry, Shri Meenakshi Government College for Women (Autonomous), Madurai 625 002, India
| | - P Jayabal
- Department of Laser Studies, School of Physics, Madurai Kamaraj University, Madurai 625 021, India
| | - V Ramakrishnan
- Department of Laser Studies, School of Physics, Madurai Kamaraj University, Madurai 625 021, India.
| |
Collapse
|
11
|
Affiliation(s)
- Jean-Noël Rebilly
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR 8601, PRES Sorbonne Paris Cité, Université Paris Descartes, 45 rue des Saints Pères, 75006 Paris, France
| | - Olivia Reinaud
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR 8601, PRES Sorbonne Paris Cité, Université Paris Descartes, 45 rue des Saints Pères, 75006 Paris, France
| |
Collapse
|
12
|
Dong Z, Zhu J, Luo Q, Liu J. Understanding enzyme catalysis by means of supramolecular artificial enzymes. Sci China Chem 2013. [DOI: 10.1007/s11426-013-4871-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
13
|
Molecular Recognition and Transport of Active Pharmaceutical Ingredients on Anionic Calix[4]arene-Capped Silver Nanoparticles. J CHEM-NY 2013. [DOI: 10.1155/2013/191828] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A series of six anionic calix[4]arenes, having sulphonate, carboxylate, or phosphonate functions at either the para-aromatic position or the phenolic face were used to cap silver nanoparticles. Their molecular recognition properties were studied with regard to three active pharmaceutical ingredients, chlorhexidine, chloramphenicol, and. gentamycin sulfate. Of these APIs chlorhexidine is known to form cocrystals with the anionic calix[4]arenes, gentamicin sulfate is an aminoglycosidic antibiotic, and chloramphenicol is a neutral antibiotic. As expected the former two APIs show clear complexation behavior as demonstrated by shifts in the visible spectra whereas the last shows no modification in the wavelength of the plasmon resonance of the silver nanoparticles.
Collapse
|
14
|
Desbouis D, Troitsky IP, Belousoff MJ, Spiccia L, Graham B. Copper(II), zinc(II) and nickel(II) complexes as nuclease mimetics. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.12.005] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
15
|
Schühle DT, Peters JA, Schatz J. Metal binding calixarenes with potential biomimetic and biomedical applications. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.04.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
16
|
Xia F, Zhu H. Density functional calculations on the effect of sulfur substitution for 2'-hydroxypropyl-p-nitrophenyl phosphate: C-O vs. P-O bond cleavage. Bioorg Chem 2011; 40:99-107. [PMID: 22000806 DOI: 10.1016/j.bioorg.2011.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Accepted: 09/10/2011] [Indexed: 10/17/2022]
Abstract
Density functional theory calculations have been used to investigate the intra-molecular attack of 2'-hydroxypropyl-p-nitrophenyl phosphate (HPpNP) and its analogous compound 2-thiouridyl-p-nitrophenyl phosphate (s-2'pNP). Bulk solvent effect has been tested at the geometry optimization level with the polarized continuum model. It is found that the P-path involving the intra-molecular attack at the phosphorus atom and C-path involving the attack at the beta carbon atom proceed through the S(N)2-type mechanism for HPpNP and s-2'pNP. The calculated results indicate that the P-path with the free energy barrier of about 11 kcal/mol is more accessible than the C-path for the intra-molecular attack of HPpNP, which favors the formation of the five-membered phosphate diester. While for s-2'pNP, the C-path with the free energy barrier of about 21 kcal/mol proceeds more favorably than the P-path. The calculated energy barriers of the favorable pathways for HPpNP and s-2'pNP are both in agreement with the experimental results.
Collapse
Affiliation(s)
- Futing Xia
- School of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hua Zhu
- School of Chemistry, Sichuan University, Chengdu 610064, China; State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610064, China.
| |
Collapse
|
17
|
Joseph R, Ramanujam B, Acharya A, Rao CP. Lower Rim 1,3-Di{bis(2-picolyl)}amide Derivative of Calix[4]arene (L) as Ratiometric Primary Sensor toward Ag+ and the Complex of Ag+ as Secondary Sensor toward Cys: Experimental, Computational, and Microscopy Studies and INHIBIT Logic Gate Properties of L. J Org Chem 2009; 74:8181-90. [DOI: 10.1021/jo901676s] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roymon Joseph
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| | - Balaji Ramanujam
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| | - Amitabha Acharya
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| | - Chebrolu P. Rao
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| |
Collapse
|
18
|
Self-assembled gold nanocrystal micelles act as an excellent artificial nanozyme with ribonuclease activity. J Biol Inorg Chem 2009; 14:653-62. [DOI: 10.1007/s00775-009-0478-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Accepted: 02/05/2009] [Indexed: 10/21/2022]
|
19
|
Lambert JB, Kang SH, Ma K, Liu C, Condie AG. Synthesis of Calixarene-Capped Carbosilane Dendrimers. J Org Chem 2009; 74:2527-32. [DOI: 10.1021/jo802714q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joseph B. Lambert
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208
| | - Seung-Hyun Kang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208
| | - Kuangbiao Ma
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208
| | - Chunqing Liu
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208
| | - Allison G. Condie
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208
| |
Collapse
|
20
|
Chapter 4 Conjugates of Calixarenes and Heterocycles in the Design of Newer Chemical Entities. ADVANCES IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0065-2725(08)00204-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
|
21
|
Affiliation(s)
- Damien M. Homden
- Energy Materials Laboratory, School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Carl Redshaw
- Energy Materials Laboratory, School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| |
Collapse
|
22
|
Liu CT, Neverov AA, Brown RS. A Reductionist Biomimetic Model System That Demonstrates Highly Effective Zn(II)-Catalyzed Cleavage of an RNA Model. Inorg Chem 2007; 46:1778-88. [PMID: 17256929 DOI: 10.1021/ic062065u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The cyclization of the RNA model 2-hydroxypropyl p-nitrophenyl phosphate (HPNPP, 1) promoted by Zn2+ alone and the 1,5,9-triazacyclododecane complex of Zn2+ (Zn2+:[12]aneN3) is studied in ethanol in the presence of 0.5 equiv of -OEt/Zn2+ to investigate the effect of a low polarity/dielectric medium on a metal-catalyzed reaction of biological relevance. Ethanol exerts a medium effect that promotes strong binding of HPNPP to Zn2+, followed by a dimerization to form a catalytically active complex (HPNPP:Zn2+)2 in which the phosphate undergoes cyclization with a rate constant of kcat = 2.9 s(-1) at s(s)pH 7.1. In the presence of the triaza ligand:Zn2+ complex, the change from water to methanol and then to ethanol brings about a mechanism where two molecules of the complex, suggested as EtOH:Zn2+:[12]aneN3 and its basic form, EtO-:Zn2+:[12]aneN3, bind to HPNPP and catalyze its decomposition with a rate constant of kcat of 0.13 s(-1) at s(s)pH 7.1. Overall, the acceleration exhibited in these two situations is 4 x 10(14)-fold and 1.7 x 10(12)-fold relative to the background ethoxide-promoted reactions at the respective s(s)pH values. The implications of these findings are discussed within the context of the idea that enzymatic catalysis is enhanced by a reduced effective dielectric constant within the active site.
Collapse
Affiliation(s)
- C Tony Liu
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada
| | | | | |
Collapse
|
23
|
Affiliation(s)
- SUSAN E. MATTHEWS
- a University of East Anglia, School of Chemical Sciences and Pharmacy , Norwich, Norfolk, NR4 7TJ, England, UK
| | - PAUL D. BEER
- b University of Oxford, Department of Chemistry, Inorganic Chemistry Laboratory , South Parks Road, Oxford, OX1 3QR, England, UK
| |
Collapse
|
24
|
|
25
|
Gupta VK, Ludwig R, Agarwal S. Anion recognition through modified calixarenes: a highly selective sensor for monohydrogen phosphate. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.02.008] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
26
|
Jin H, Ren M, Yi-Zhi L, Gao-Sheng Y, Zi-Jian G, Long-Gen Z. Selective Inclusion of Fluoboric Acid by Tetra(p-tert-butyl)-thiacalix[4]arene: Crystal Structure and Theoretical Study. CHINESE J CHEM 2005. [DOI: 10.1002/cjoc.200590233] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
27
|
Maxwell C, Neverov AA, Brown RS. Solvent deuterium kinetic isotope effects for the methanolyses of neutral CO, PO and PS esters catalyzed by a triazacyclododecane : Zn2+-methoxide complex. Org Biomol Chem 2005; 3:4329-36. [PMID: 16327893 DOI: 10.1039/b512378j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The methanolyses of several organophosphate/phosphonate/phosphorothioate esters (O,O-diethyl O-(4-nitrophenyl) phosphate, paraoxon, ; O,O-diethyl S-(3,5-dichlorophenyl) phosphorothioate, ; O-ethyl O-(2-nitro-4-chlorophenyl) methylphosphonate, ; O,O-dimethyl O-(3-methyl-4-nitrophenyl) phosphorothioate, fenitrothion, ; O-ethyl S-(3,5-dichlorophenyl) methylphosphonothioate ) and a carboxylate ester (p-nitrophenyl acetate, ) catalyzed by methoxide and the Zn(2+)((-)OCH(3)) complex of 1,5,9-triazacyclododecane ( : Zn(2+)((-)OCH(3))) were studied in methanol and d(1)-methanol at 25 degrees C. In the case of the methoxide reactions inverse skie's were observed for the series with values ranging from 2 to 1.1, except for where the k(D)/k(H) = 0.90 +/- 0.02. The inverse k(D)/k(H) values are consistent with a direct nucleophilic methoxide attack involving desolvation of the nucleophile with varying extents of resolvation of the TS. With the : Zn(2+)((-)OCH(3)) complex all the skie values are k(D)/k(H) = 1.0 +/- 0.1 except for where the value is 0.79 +/- 0.06. Arguments are presented that the fractionation factors associated with complex : Zn(2+)((-)OCH(3)) are indistinguishable from unity. The skie's for all the complex-catalyzed methanolyses are interpreted as being consistent with an intramolecular nucleophilic attack of the Zn(2+)-coordinated methoxide within a pre-equilibrium metal : substrate complex.
Collapse
Affiliation(s)
- Chris Maxwell
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada K7L 3N6.
| | | | | |
Collapse
|
28
|
Ali A, Salunke-Gawali S, Rao CP, Linares J. A first report of the complexes of 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarboxymethoxy-26,28-dihydroxycalix[4]arene with Mn(II), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II). INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2004.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
29
|
Arena G, Bonomo RP, Contino A, Sgarlata C, Spoto G, Tabbi G. Influence of the coordination geometry on the physicochemical properties of a copper(ii) complex with a tailor-made calixarene-based ligand bearing dipyridyl pendants. An ESR, UV-Vis and CV study. Dalton Trans 2004:3205-11. [PMID: 15483702 DOI: 10.1039/b408724k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dipyridyl pendants, suitably attached onto a calix[4]arene fixed in its 1,3-alternate conformation, form stable complexes with copper(ii) in acetonitrile. Both the mononuclear and the homobinuclear species ([Cu(1)](2+) and [Cu(2)(1)](4+)), previously detected through a UV-Vis investigation, have been studied by ESR, UV-Vis and cyclic voltammetry. ESR and UV-Vis data clearly indicate that in the [Cu(1)](2+) species the nitrogen atoms of dipyridyl pendants are tetrahedrally arranged around copper(II). Computer models, optimised through molecular mechanics methods, further support these spectroscopic findings. The tetrahedral arrangement, achieved thanks to the anchoring of the dipyridyl moieties onto the calixarene platform, accounts for the easy reversible reduction of this species. The aspects associated with the reduction-oxidation of the homobinuclear species are also discussed.
Collapse
Affiliation(s)
- Giuseppe Arena
- Dipartimento di Scienze Chimiche, Universita di Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | | | | | | | | | | |
Collapse
|
30
|
Arena G, Contino A, Longo E, Sciotto D, Sgarlata C, Spoto G. Synthesis, characterization of a novel calixarene having dipyridyl pendants and study of its complexes with Cu(II) and Co(II). Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01319-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
31
|
|
32
|
Tsang JSW, Neverov AA, Brown RS. La(3+)-Catalyzed methanolysis of hydroxypropyl-p-nitrophenyl phosphate as a model for the RNA transesterification reaction. J Am Chem Soc 2003; 125:1559-66. [PMID: 12568616 DOI: 10.1021/ja021176z] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The methanolysis of hydroxypropyl-p-nitrophenyl phosphate (HPNPP, 1) promoted by La(OTf)(3) under buffered conditions was studied in methanol as a function of pH at 25 degrees C. (31)P NMR studies at -90 degrees C indicate that there are at least three La/1 complexes formed at pH approximately 5.3 of 1:1, 2:2, and 1:2 stoichiometry. Kinetic studies of the observed pseudo-first-order rate constants for the methanolysis of 1 as a function of [La(3+)] at 4.5 < pH < 10.5 indicate there are two general pH regimes. In the low pH regime between 4.5 and 7.6, the plots of k(obs) versus [La(3+)] exhibit saturation behavior with very strong 1:1 binding, with a plateau rate constant that depends on [OCH(3)(-)]. The catalytically productive species is shown to be a 2:2 complex of La(3+) and 1, where the phosphate is proposed to be doubly activated, thereby promoting the methoxide reaction by some 4.6 x 10(10)-fold. In the high pH regime from 7.9 to 10.5, 1:1, 2:2, and 2:1 La(3+)/1 complexes are formed with the La(3+) coordinated in the form of [La(3+)(OCH(3)(-))](1,2). Throughout this pH regime at high [La(3+)], a saturation complex, (La(3+)OCH(3)(-))(2)/1, is formed that spontaneously decomposes with a rate constant of (5-10) x 10(-)(3) s(-)(1), leading to an acceleration of 10(9)-fold at pH 8.0.
Collapse
Affiliation(s)
- Josephine S W Tsang
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6
| | | | | |
Collapse
|
33
|
Xiang QX, Yu XQ, Su XY, Yan QS, Wang T, You JS, Xie RG. Phosphodiester hydrolysis by metal ion macrocyclic dioxotetraamine complexes bearing alcohol pendant in comicellar solution. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1169(02)00276-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
34
|
Gajda T, Jancsó A, Mikkola S, Lönnberg H, Sirges H. Crystal structure, solution properties and hydrolytic activity of an alkoxo-bridged dinuclear copper(ii) complex, as a ribonuclease model. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b108948j] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
35
|
Abstract
Three series of bimetallic ligands were tested for cooperativity in the hydrolysis of phosphate esters. It was shown that rate enhancements were in part contributed by binding to the hydrophobic linkers when the substrates were also hydrophobic, and two metal cooperativity was not found to be present. Kinetic order tests were performed and shown to be superior to previous methods for analyzing cooperativity.
Collapse
Affiliation(s)
- M Leivers
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | | |
Collapse
|
36
|
Dospil G, Schatz J. Synthesis and characterization of imidazole-substituted calix[4]arenes as simple enzyme-mimics with acyltransferase activity. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01688-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
37
|
|
38
|
Kumar S, Kurur ND, Chawla HM, Varadarajan R. A CONVENIENT ONE POT ONE STEP SYNTHESIS OFp-NITROCALIXARENES VIA IPSONITRATION. SYNTHETIC COMMUN 2001. [DOI: 10.1081/scc-100103269] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
39
|
Molenveld P, Engbersen JFJ, Reinhoudt DN. Synthesis of a Dinuclear ZnII–Calix[4]arene Enzyme Model with Additional General Base Groups – Catalytic Activity in Phosphate Diester Transesterification. European J Org Chem 1999. [DOI: 10.1002/(sici)1099-0690(199912)1999:12<3269::aid-ejoc3269>3.0.co;2-v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|