1
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Calixbenoquin: Calixarene-Based Cluster of Monobenzone as a New Anti-Tyrosinase Agent. Pharm Chem J 2022. [DOI: 10.1007/s11094-022-02777-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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2
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Burilov VA, Belov RN, Nugmanov RI, Solovieva SE, Antipin IS. Hydrazine-mediated C-O bond reductive cleavage in some bis- and mono-O-substituted derivatives of 4-tert-butylcalix[4]arene. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3556-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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3
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Fang S, Dang YY, Li H, Li H, Liu J, Zhong R, Chen Y, Liu S, Lin S. Membrane-Active Antibacterial Agents Based on Calix[4]arene Derivatives: Synthesis and Biological Evaluation. Front Chem 2022; 10:816741. [PMID: 35211455 PMCID: PMC8861315 DOI: 10.3389/fchem.2022.816741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/07/2022] [Indexed: 11/16/2022] Open
Abstract
Bacteria have developed increasing resistance to currently used antimicrobial agents. New classes of antimicrobial drugs are urgently required to fight drug-resistant pathogens. Here, we designed and synthesized a series of calix[4]arene derivatives as antibacterial agents by biomimicking the structural properties and biological functions of antibacterial peptides. After introducing cationic hydrophilic moieties and preliminary structural optimization, we obtained a lead compound (16) that exhibited excellent antibacterial activity against Gram-positive bacteria, low toxicity toward mammalian cells and poor hemolytic activity. The antibacterial mechanism studies showed that compound 16 can destroy bacterial cell membrane directly, leading to bacterial death and a low tendency to develop bacterial resistance.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Shuimu Lin
- *Correspondence: Shouping Liu, ; Shuimu Lin,
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4
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Kashapov R, Razuvayeva Y, Ziganshina A, Sapunova A, Lyubina A, Amerhanova S, Kulik N, Voloshina A, Nizameev I, Salnikov V, Zakharova L. Effect of preorganization and amphiphilicity of calix[4]arene platform on functional properties of viologen derivatives. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Abstract
Artificial receptors able to recognise biologically relevant molecules or ions have gained interest in the chemical community because they offer a plethora of posibilities. Molecular cage compounds are polycyclic compounds with a cavity designed for the encapsulation of guest species. Once inside the host cavity, the substrate can be transported through membranes and protected from the action of enzymes or other reactive species, thus offering the possibility of interfering with biological systems. Commonly, enzymes have been an inspiration for chemists in the search and design of defined cavities for different purposes. However, the chemical preparation of molecular cages has struggled with many synthetic challenges but this effort is worthwhile as they are a very promising tool for many applications ranging from sensing, delivery, purification or even promotion of/prevention from chemical modifications. Since the early reports at the end of the 60s, this field has experienced a growing interest; this review summarises the progress in the preparation and study of cage-like compounds highlighting their importance in biological applications.
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Affiliation(s)
- Lucía Tapia
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Ignacio Alfonso
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Jordi Solà
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
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6
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Gharehkhani A, Ghorbani-Vaghei R, Alavinia S. Synthesis of calixresorcarenes using magnetic poly triazine-benzene sulfonamide-SO 3H. RSC Adv 2021; 11:37514-37527. [PMID: 35496418 PMCID: PMC9043749 DOI: 10.1039/d1ra07393a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/15/2021] [Indexed: 01/18/2023] Open
Abstract
The purpose of this work is to develop a magnetically recyclable immobilized base catalyst for the green synthesis of calixresorcarenes. To achieve this, poly triazine-benzene sulfonamide (PTBSA) has been coated on magnetic Fe3O4 nanoparticles and subsequently chlorosulfonic acid has been supported to obtain Fe3O4@PTBSA-SO3H. The structure of nano-Fe3O4@PTBSA-SO3H was characterized by TEM, XRD, FT-IR, VSM, WDX, EDX, TGA/DSC and FE-SEM. The catalytic efficiency of this catalyst was also investigated in the synthesis of novel calixresorcarene derivatives. The advantages of heterogeneous nature, catalytic activity and the recyclability of the polymer support were also strengthened by advanced surface treatment. These key factors (basic sites, acidic sites and heterogeneity) play essential roles in the catalyst performance. This procedure has some advantages such as short reaction time, clean and fast work-up and easy separation of the catalyst by an external magnet. Magnetic poly triazine-benzene sulfonamide-SO3H was investigated for the synthesis of calixresorcarenes.![]()
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Affiliation(s)
- Alireza Gharehkhani
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Zip Code 65174 Hamedan Iran +98 81 38380647
| | - Ramin Ghorbani-Vaghei
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Zip Code 65174 Hamedan Iran +98 81 38380647
| | - Sedigheh Alavinia
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Zip Code 65174 Hamedan Iran +98 81 38380647
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7
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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]
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8
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Oguz M, Dogan B, Durdagi S, Bhatti AA, Karakurt S, Yilmaz M. Investigation of supramolecular interaction of quercetin with N, N-dimethylamine-functionalized p-sulfonated calix[4,8]arenes using molecular modeling and their in vitro cytotoxic response towards selected cancer cells. NEW J CHEM 2021. [DOI: 10.1039/d1nj03038h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Although quercetin is an effective bioactive compound preventing the progress of several human cancers, its impact is reduced due to low bioavailability.
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Affiliation(s)
- Mehmet Oguz
- Selcuk University, Department of Chemistry, 42075 Konya, Turkey
- Department of Advanced Material and Nanotechnology, Selcuk University, 42031 Konya, Turkey
| | - Berna Dogan
- Department of Biochemistry, School of Medicine, Bahcesehir University, Istanbul, Turkey
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Serdar Durdagi
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Asif Ali Bhatti
- Department of Chemistry, Government College University Hyderabad, Hyderabad, 71000, Pakistan
| | - Serdar Karakurt
- Selcuk University, Department of Biochemistry, Konya 42075, Turkey
| | - Mustafa Yilmaz
- Selcuk University, Department of Chemistry, 42075 Konya, Turkey
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9
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Design, synthesis and evaluation of calix[4]arene-based carbonyl amide derivatives with antitumor activities. Eur J Med Chem 2020; 210:112984. [PMID: 33183867 DOI: 10.1016/j.ejmech.2020.112984] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/18/2020] [Accepted: 10/30/2020] [Indexed: 11/23/2022]
Abstract
Calixarenes, with potential functionalization on the upper and lower rim, have been explored in recent years for the design and construction of anticancer agents in the field of drugs and pharmaceuticals. Herein, optimization of bis [N-(2-hydroxyethyl) aminocarbonylmethoxyl substituted calix [4] arene (CLX-4) using structure-based drug design and traditional medicinal chemistry led to the discovery of series of calix [4]arene carbonyl amide derivatives 5a-5t. Evaluation of the cytotoxicity of 5a-5t employing MTT assay in MCF-7, MDA-MB-231 (human breast cancer cells), HT29 (human colon carcinoma cells), HepG2 (human hepatocellular carcinoma cells), A549 (human lung adenocarcinoma cells) and HUVEC (Human Umbilical Vein Endothelial) cells demonstrated that the most promising compound 5h displayed the most superior inhibitory effect against A549 and MDA-MB-231 cells, which were 3.2 times and 6.8 times of CLX-4, respectively. In addition, the cell inhibition rate (at 10 μM) against normal HUVEC cells in vitro was only 9.6%, indicating the safty of compound 5h. Moreover, compound 5h could inhibit the migration of MDA-MB-231 cell in wound healing assay. Further mechanism studies significantly indicated that compound 5h could block MDA-MB-231 cell cycle arrest in G0/G1 phase by down regulating cyclin D1 and CDK4, and induce apoptosis by up-regulation of Bax, down-regulation of Caspase-3, PARP and Bcl-2 proteins, resulting in the reduction of DNA synthesis and cell division arrest. This work provides worthy of further exploration for the promising calixarene-based anticancer drugs.
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10
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Oguz M, Gul A, Karakurt S, Yilmaz M. Synthesis of New Picolylamine Bearing Calix[8]arene Derivatives as Antiproliferative Agents for Colorectal Carcinoma. ChemistrySelect 2020. [DOI: 10.1002/slct.202002881] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mehmet Oguz
- Selcuk University Department of Chemistry 42075 Konya Turkey
- Department of Advanced Material and Nanotechnology Selcuk University 42075 Konya Turkey
| | - Alev Gul
- Selcuk University Department of Chemistry 42075 Konya Turkey
| | - Serdar Karakurt
- Selcuk University Department of Biochemistry Konya 42075 Turkey
| | - Mustafa Yilmaz
- Selcuk University Department of Chemistry 42075 Konya Turkey
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11
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Calixbas: Calix[4]Arene-Based Bioactive Bolaamphiphiles. Pharm Chem J 2020. [DOI: 10.1007/s11094-020-02260-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Lee JS, Song IH, Shinde PB, Nimse SB. Macrocycles and Supramolecules as Antioxidants: Excellent Scaffolds for Development of Potential Therapeutic Agents. Antioxidants (Basel) 2020; 9:E859. [PMID: 32937775 PMCID: PMC7555118 DOI: 10.3390/antiox9090859] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 01/05/2023] Open
Abstract
Oxidative stress due to the high levels of reactive oxygen species (ROS) that damage biomolecules (lipids, proteins, DNA) results in acute inflammation. However, without proper intervention, acute inflammation progresses to chronic inflammation and then to several chronic diseases, including cancer, myocardial infarction, cardiovascular diseases, chronic inflammation, atherosclerosis, and more. There has been extensive research on the antioxidants of natural origin. However, there are myriad possibilities for the development of synthetic antioxidants for pharmacological applications. There is an increasing interest in the identification of novel synthetic antioxidants for the modulation of biochemical processes related to ROS. In this regard, derivatives of supramolecules, such as calix[n]arene, resorcinarene, calixtyrosol, calixpyrrole, cucurbit[n]uril, porphyrin etc. are gaining attention for their abilities to scavenge the free radicals. Supramolecular chemistry offers excellent scaffolds for the development of novel antioxidants that can be used to modulate free radical reactions and to improve the disorders related to oxidative stress. This review focuses on the interdisciplinary approach for the design and development of novel synthetic antioxidants based on supramolecular scaffolds, with potentially protective effects against oxidative stress.
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Affiliation(s)
- Jung-Seop Lee
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200702, Korea; (J.-S.L.); (I.-h.S.)
| | - In-ho Song
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200702, Korea; (J.-S.L.); (I.-h.S.)
| | - Pramod B. Shinde
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research (CSIR), Bhavnagar 364002, Gujarat, India;
| | - Satish Balasaheb Nimse
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200702, Korea; (J.-S.L.); (I.-h.S.)
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13
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Delnavaz Shahr A, Nasuhi Pur F. Calixmexitil: Calixarene-based Cluster of Mexiletine with Amplified Anti-myotonic Activity as A Novel Use-dependent Sodium Channel Blocker. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2020; 18:1351-1357. [PMID: 32641945 PMCID: PMC6934949 DOI: 10.22037/ijpr.2019.1100768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Mexiletine as the first choice drug in myotonia treatment is a chiral sodium channel blocker clinically used in its racemic form. The phenolic structure of this drug, prompted us to design its novel calix[4]arene-based cluster in a chalice-shaped structure. Therefore, the present study reports the synthesis and in-vitro anti-myotonic activity of the chalice-shaped cluster of mexiletine (namely calixmexitil) in comparison to its simple drug unit (mexitil) as the reference medication. The synthetic route included chemical modification of the calix[4]arene structure by grafting four 2-aminopropoxy moieties at the lower rim of the scaffold. Electrophysiological tests were performed for the determination of test compounds abilities to act as sodium channel blockers in inhibiting sodium currents (in use-dependent manner) in single skeletal muscle fibers. The experimental results showed an amplified (10-fold) potency in producing phasic block as an indication of the anti-myotonic activity and improved (3-fold) potency in producing use-dependent block for the cluster (calixmexitil) in relation to its monomer (mexiletine). The potency in producing phasic block and use-dependent block are two main factors to describe dose range, drug affinity, and side effects of an anti-myotonic agent. Therefore, compared to mexiletine, calixmexitil with these improved factors can be considered as a “selective” anti-myotonic agent with low dose range. These improved pharmaceutical effects are maybe attributed to clustering effect and improved interaction of four impacted mexiletine units of the cluster with the sodium channels’ structure in skeletal muscle fibers.
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Affiliation(s)
| | - Fazel Nasuhi Pur
- Health Technology Incubator Center, Urmia University of Medical Sciences, Urmia, Iran
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14
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Clustering Effect on Bioactivity of Calixarene-Based Tetramers. Pharm Chem J 2020. [DOI: 10.1007/s11094-020-02204-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Calix[4]API-s: fully functionalized calix[4]arene-based facial active pharmaceutical ingredients. Mol Divers 2020; 25:1247-1258. [PMID: 32006298 DOI: 10.1007/s11030-020-10042-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/22/2020] [Indexed: 01/05/2023]
Abstract
This mini-review covers 25 fully functionalized facial calix[4]arene-based symmetrical and conical cyclic tetramers with significant (comparable to established therapeutic agents) anticancer and anti-infective activities. The main role of the calixarene scaffold in these calix[4]arene-based active pharmaceutical ingredients (calix[4]API-s) is to replicate embedded phenolic units in the cyclic tetramers. So, probably owing to the multivalency, facial, conical structures of calix[4]API-s and synergistic effect of their four replicated units, they can be considered as effective bioactive agents.
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16
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Oguz M, Gul A, Karakurt S, Yilmaz M. Synthesis and evaluation of the antitumor activity of Calix[4]arene l-proline derivatives. Bioorg Chem 2019; 94:103207. [PMID: 31451296 DOI: 10.1016/j.bioorg.2019.103207] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 07/10/2019] [Accepted: 08/15/2019] [Indexed: 02/08/2023]
Abstract
The unique conformational properties, functionality, low toxicity, and low cost make calixarene-based compounds a valuable candidate against cancer. The aim of the present study is the synthesis of the upper rim and lower rim-functionalized l-proline-based calix[4]arene derivatives and evaluation of their cytotoxic potential for human cancerous cells as well as to determine the death mechanism. Synthesized calix[4]arene (3, 8a, 8b 13a, and 13b) derivatives were characterized by different spectroscopic techniques such as 1HNMR, 13CNMR, and FTIR. In vitro effects of compounds 3, 8a, 8b, 13a and 13b were tested on human cancerous cells (HEPG2, PC-3, A-549, and DLD-1) as well as human healthy epithelium cell (PNT1A). Results show that compounds 3, 8a, 8b and 13b have cytotoxic potential on human colorectal carcinoma cells (DLD-1) with IC50 values of 43 µM, 45.2 µM, 64.57 µM, and 29.35 µM respectively. Apoptosis ratios of cell death were investigated with flow cytometer using 7-AAD and Annexin-V as markers. Cytotoxic potential of 8a was found to be higher due to increased apoptosis, when compared with healthy cells the apoptotic cell death was significantly (p < 0.0001) increased up to 1.7-fold and 2.4-fold in DLD-1 and A549 cells, respectively. In conclusion, these l-proline derived calix[4]arenes with their selective cytotoxic potential on human cancerous cells may be a potential candidate for the treatment of human CRC and lung cancer.
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Affiliation(s)
- Mehmet Oguz
- Selcuk University, Department of Chemistry, 42075 Konya, Turkey; Department of Advanced Material and Nanotechnology, Selcuk University, 42075 Konya, Turkey
| | - Alev Gul
- Selcuk University, Department of Chemistry, 42075 Konya, Turkey
| | - Serdar Karakurt
- Selcuk University, Department of Biochemistry, Konya 42075, Turkey.
| | - Mustafa Yilmaz
- Selcuk University, Department of Chemistry, 42075 Konya, Turkey.
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17
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Ni J, Lu L, Liu Y. Antiradical and Antioxidative Activity of Azocalix[4]arene Derivatives: Combined Experimental and Theoretical Study. Molecules 2019; 24:E485. [PMID: 30700034 PMCID: PMC6384892 DOI: 10.3390/molecules24030485] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 01/27/2019] [Accepted: 01/28/2019] [Indexed: 11/16/2022] Open
Abstract
Developing antioxidants with high efficiency is fundamentally important for the protection of living cells and engineering materials against oxidative damage. In this present study, two azocalix[4]arene derivatives were synthesized via a diazo coupling reaction between calix[4]arene and diazonium salts. Their antiradical and antioxidative performances were evaluated by hydroxyl radical scavenging and pyrogallol autoxidation inhibition experiments. Combined with theoretical studies, the antiradical and antioxidative mechanisms have been explored. The results demonstrated that these two azocalix[4]arene derivatives both exhibited remarkable antiradical and antioxidative activity. The macrocyclic framework of the calix[4]arene and para-azo substituent group at the upper rim of calix[4]arene contributed synergistically and importantly to its excellent antiradical and antioxidant activity.
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Affiliation(s)
- Jiaqi Ni
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Lilin Lu
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Yi Liu
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China.
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18
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Zadmard R, Akbarzadeh A, Jalali MR. Highly functionalized calix[4]arenes via multicomponent reactions: synthesis and recognition properties. RSC Adv 2019; 9:19596-19605. [PMID: 35519416 PMCID: PMC9065295 DOI: 10.1039/c9ra03354h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 06/18/2019] [Indexed: 11/21/2022] Open
Abstract
Multicomponent reactions (MCRs) include several aspects of green chemistry principles, so it is obvious that chemists in different areas are increasingly interested in providing their product by multicomponent approaches. MCRs can be very useful in supramolecular chemistry, especially to produce novel supramolecular derivatives. Therefore, there are several reports of highly-functionalized calix[4]arene derivatives obtained by MCRs instead of conventional stepwise protocols during the last decade. In this paper, we have particularly focused on the exploitation of upper rim and lower rim substituted calix[4]arenes in multicomponent approaches as a facile and convenient synthetic strategy. The value of this method lies in its operational simplicity, mild reaction conditions and structural diversity of the products. Interestingly, in most cases the products afforded by this method offer unique features and applications which are highlighted in the following sections. Multicomponent reactions (MCRs) include several aspects of green chemistry principles, so it is obvious that chemists in different areas are increasingly interested in providing their product by multicomponent approaches.![]()
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Affiliation(s)
- Reza Zadmard
- Department of Organic Chemistry
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
| | - Ali Akbarzadeh
- Department of Organic Chemistry
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
| | - Mohammad Reza Jalali
- Department of Organic Chemistry
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
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19
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Martins FT, Oliveira BGD, Sarotti AM, de Fátima Â. Winged-Cone Conformation in Hexa- p-tert-butylcalix[6]arene Driven by the Unusually Strong Guest Encapsulation. ACS OMEGA 2017; 2:5315-5323. [PMID: 31457800 PMCID: PMC6641646 DOI: 10.1021/acsomega.7b00900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/21/2017] [Indexed: 06/10/2023]
Abstract
Hexa-p-tert-butylcalix[6]arene (1) is believed to adopt a winged conformation in a solution, featured by four phenyl rings perpendicular to the calix basis and two others at 1,4-positions lying down. However, there is some controversy on the occurrence of this conformation because it has never been found in the solid state of calix[6]arenes, regardless of the substitution pattern at lower and upper rims. Here, we have observed the winged-cone conformation for the first time in a solvate form of 1 with dimethyl sulfoxide (DMSO), dimethylformamide, and pyridine. The DMSO molecule is strongly encapsulated into 1 through two OH···O hydrogen bonds with both flattened phenolic moieties, one lp(S)···π and four CH···π interactions with the four perpendicular phenyl rings. This host-guest complex has energy lower by 23.4 kcal mol-1 than the isolated species. In addition, another DMSO solvate form with 1,2,3-alternate conformation was also obtained in this study, and its structure is compared with that of the precedent one. A detailed density functional theory study has also been carried out to understand the energetic relationships among cone conformers, intramolecular hydrogen-bonding patterns, and DMSO encapsulation.
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Affiliation(s)
- Felipe Terra Martins
- Instituto
de Química, Universidade Federal
de Goiás, P.O. Box 131, 74690-900 Goiânia, Brazil
- Grupo
de Estudos em Química Orgânica e Biológica (GEQOB),
Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos
6627, 31270-901 Belo Horizonte, Brazil
| | - Breno Germano de
Freitas Oliveira
- Grupo
de Estudos em Química Orgânica e Biológica (GEQOB),
Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos
6627, 31270-901 Belo Horizonte, Brazil
| | - Ariel M. Sarotti
- Instituto
de Química Rosario (IQUIR), Universidad
Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Ângelo de Fátima
- Grupo
de Estudos em Química Orgânica e Biológica (GEQOB),
Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos
6627, 31270-901 Belo Horizonte, Brazil
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20
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Požar J, Nikšić-Franjić I, Cvetnić M, Leko K, Cindro N, Pičuljan K, Borilović I, Frkanec L, Tomišić V. Solvation Effect on Complexation of Alkali Metal Cations by a Calix[4]arene Ketone Derivative. J Phys Chem B 2017; 121:8539-8550. [DOI: 10.1021/acs.jpcb.7b05093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Josip Požar
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Ivana Nikšić-Franjić
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Marija Cvetnić
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Katarina Leko
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Nikola Cindro
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Katarina Pičuljan
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Ivana Borilović
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
| | - Leo Frkanec
- Department
of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
| | - Vladislav Tomišić
- Department
of Chemistry, Faculty of Science, University of Zagreb, Horvatovac
102a, 10000 Zagreb, Croatia
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Di Francesco M, Celia C, Primavera R, D’Avanzo N, Locatelli M, Fresta M, Cilurzo F, Ventura CA, Paolino D, Di Marzio L. Physicochemical characterization of pH-responsive and fusogenic self-assembled non-phospholipid vesicles for a potential multiple targeting therapy. Int J Pharm 2017; 528:18-32. [DOI: 10.1016/j.ijpharm.2017.05.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 05/22/2017] [Accepted: 05/23/2017] [Indexed: 12/15/2022]
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Martins FT, Maia LJQ, da Silva Neto L, da Silva CM, Sarotti AM, de Fátima Â. Solvatomorphs of 25,26,27,28-tetrahydroxycalix[4]arene and 5,11,17,23-tetramino-25,26,27,28-tetrabutoxycalix[4]arene: quenching photoluminescence through switching the guest. CrystEngComm 2017. [DOI: 10.1039/c6ce02649d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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