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Tangdenpaisal K, Kheakwanwong W, Ruchirawat S, Ploypradith P. Dihydro-10 H-indeno[1,2- b]benzofurans and Tetrahydroindeno[1,2- c]isochromenes via Stereoselective Intramolecular Carbocation Cascade Cyclization. J Org Chem 2024; 89:2964-2983. [PMID: 38345392 DOI: 10.1021/acs.joc.3c02380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Nazarov cyclization of the (E)-(2-stilbenyl)methanols under the catalysis of p-TsOH immobilized on silica (PTS-Si) proceeded to give the corresponding indanyl cation with the exclusive trans relationship at the two newly formed adjacent stereogenic centers. The ensuing intramolecular nucleophilic addition by the MOM-protected phenol (m = 0) or benzyl alcohol (m = 1) furnished the Indane-fused benzofuran [5/5] or isochroman [5/6] system, respectively, with the exclusive cis stereocontrol at the two-carbon ring junction. Thus, in a single step, from nonchiral starting materials, the intramolecular cascade carbocation cyclization (CCC) furnished the [5/5] or [5/6] oxygen-containing Indane fused-ring systems in moderate to good yields with excellent stereoselectivity on all three contiguous stereogenic centers.
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Affiliation(s)
- Kassrin Tangdenpaisal
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
| | - Wichita Kheakwanwong
- Program in Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Program in Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Center of Excellence on Environmental Health and Toxicology, Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand 10400
| | - Poonsakdi Ploypradith
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Program in Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Center of Excellence on Environmental Health and Toxicology, Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand 10400
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Mullaivendhan J, Akbar I, Ahamed A, Gatasheh MK, Hatamleh AA, Raman G, Manilal A, Kuzhunellil Raghavanpillai S. Synthesis of a New Series of Anthraquinone-Linked Cyclopentanone Derivatives: Investigating the Antioxidant, Antibacterial, Cytotoxic and Tyrosinase Inhibitory Activities of the Mushroom Tyrosinase Enzyme Using Molecular Docking. Drug Des Devel Ther 2024; 18:597-612. [PMID: 38436040 PMCID: PMC10908290 DOI: 10.2147/dddt.s439633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/13/2024] [Indexed: 03/05/2024] Open
Abstract
Purpose New bioactive anthraquinone derivatives are investigated for antibacterial, tyrosinase inhibitory, antioxidant cytotoxic activity, and molecular docking. Methods The compounds were produced using the grindstone method, yielding 69 to 89%. These compounds were analyzed using IR, 1H, and 13C NMR and elemental and mass spectral methods. Additionally, the antibacterial, antioxidant, and tyrosinase inhibitory activities of all the synthesised compounds were evaluated. Results Compound 2 showed remarkable tyrosinase inhibition activity, with an (IC50: 13.45 µg/mL), compared to kojic acid (IC50: 19.40 µg/mL). It also exhibited moderate antioxidant and antibacterial activities with respect to the references BHT and ampicillin, respectively. Kinetic analysis revealed that the tyrosinase inhibitory activity of compound 2 was non-competitive and competitive, whereas that of compound 1 was low. All compounds (1-8) were significantly less active than doxorubicin (LC50: 0.74±0.01μg/mL). However, compound 2 affinity for the 2Y9X protein was lower than kojic acid, with a lower docking score (-8.6 kcal/mol compared to (-4.7 kcal/mol), making it more effective. Conclusion All synthesized compounds displayed remarkable antibacterial, tyrosinase inhibitory, antioxidant, and cytotoxic activities, with compound 2 showing exceptional potency as a multitarget agent. Anthraquinone substituent groups may offer the potential for the development of treatments. The derivatives were synthesized using the grindstone method, and their antibacterial, antioxidant, tyrosinase inhibitory, and cytotoxic activities were inspected. Molecular docking and molecular dynamics simulations were performed using compound 2 and kojic acid to validate the results and confirm the stability of the compounds.
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Affiliation(s)
- Janani Mullaivendhan
- Research Department of Chemistry, Nehru Memorial College (Affiliated to Bharathidasan University), Puthanampatti, Tamil Nadu, 621007, India
| | - Idhayadhulla Akbar
- Research Department of Chemistry, Nehru Memorial College (Affiliated to Bharathidasan University), Puthanampatti, Tamil Nadu, 621007, India
| | - Anis Ahamed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mansour K Gatasheh
- Department of Biochemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ashraf Atef Hatamleh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Gurusamy Raman
- Department of Life Science, Yeungnam University, Gyeongsan, Gyeongbuk-do, 38541, South Korea
| | - Aseer Manilal
- Department of Laboratory Sciences, College of Medicine and Health Sciences, Arba Minch University, Arba Minch, Ethiopia
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Das S, Das P, Maity S, Ghosh P, Dutta A. Mechanochemical reaction of ninhydrin with aromatics, enols and amines: Synthesis, crystal structure and supramolecular self-assembly of cyclic and acyclic adducts. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2022.100713] [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] Open
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Saqa NA, Khalil-Moghaddam S, Shahvelayati AS. DABCO-based ionic liquid-promoted synthesis of indeno-benzofurans derivatives: Investigation of antioxidant and antidiabetic activities. HETEROCYCL COMMUN 2022. [DOI: 10.1515/hc-2022-0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Abstract
A simple and effective method for synthesis of indeno-benzofurans derivatives using polyphenols and ninhydrins is explored using an acidic catalyst based on DABCO (1,4-diaza bicycle [2.2.2] octane)-based ionic liquid. The products of these types of reactions have very low yields without catalysts, but with DABCO-AIL, the yields are excellent, reaction times are reduced, and the media are cleaner. Using infrared (IR), proton nuclear magnetic resonance (1H NMR), Carbon-13 nuclear magnetic resonance (13C NMR), and mass spectrometry, the structures of products can be confirmed. There is evidence that oxidative stress plays a role in the pathophysiology of numerous diseases, including diabetes. Therapeutic antioxidants are promising candidates for the prevention and treatment of such diseases. To investigate the antioxidant properties of all synthesized derivatives, the 2,2-diphenyl-1-picrylhydrazylhydrazyl-hydrate (DPPH) assay was used. Derivatives 3d and 4 with the highest antioxidant effect (with IC50 value of 0.015 µmol/mL) were selected to evaluate the anti-diabetic effect using the Bernfeld method. The best result was seen at 0.8 mg/mL of 4 derivative and results of the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test revealed that 4 at this concentration lacked cellular toxicity, too.
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Affiliation(s)
- Narges Alipour Saqa
- Department of Biology, Yadegar-e-Imam Khomeini (RAH) shahr-e-Rey Branch, Islamic Azad University , Tehran , Iran
| | - Shiva Khalil-Moghaddam
- Department of Biology, Yadegar-e-Imam Khomeini (RAH) shahr-e-Rey Branch, Islamic Azad University , Tehran , Iran
| | - Ashraf Sadat Shahvelayati
- Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) shahr-e-Rey Branch, Islamic Azad University , Tehran , Iran
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Nayek U, Basheer Ahamed SI, Mansoor Hussain UH, Unnikrishnan MK, Abdul Salam AA. Computational investigations of indanedione and indanone derivatives in drug discovery: Indanone derivatives inhibits cereblon, an E3 ubiquitin ligase component. Comput Biol Chem 2022; 101:107776. [PMID: 36252444 DOI: 10.1016/j.compbiolchem.2022.107776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/30/2022] [Accepted: 10/05/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Cereblon, an extensively studied multifunctional protein, is a Cullin 4-RING E3 ubiquitin ligase complex component. Cereblon is a well-known target of thalidomide and its derivatives. Cereblon is involved in multiple myeloma cell apoptosis. When ligands such as thalidomide and lenalidomide bind to cereblon, it recognizes various neosubstrates based on the ligand shape and properties. We have identified novel CRBN inhibitors, namely DHFO and its analogs, with structural features that are slightly different from thalidomide but stronger cereblon-binding affinity. We selected indanedione and indanone derivatives from the literature to understand and compare their cereblon-mediated substrate recognition potential. METHODS Computational investigations of possible CRBN inhibitors were investigated by molecular docking with Autodock Vina and DockThor programs. The properties of the compounds' ADME/T and drug-likeness were investigated. A molecular dynamics study was carried out for four selected molecules, and the molecular interactions were analyzed using PCA-based FEL methods. The binding affinity was calculated using the MM/PBSA method. RESULTS We conducted computational investigations on 68 indanedione and indanone derivatives binding with cereblon. Ten molecules showed better CRBN binding affinity than thalidomide. We studied the drug-likeness properties of the selected ten molecules, and four of the most promising molecules (DHFO, THOH, DIMS, and DTIN) were chosen for molecular dynamics studies. The MM/PBSA calculations showed that the DHFO, already shown to be a 5-LOX/COX2 inhibitor, has the highest binding affinity of - 163.16 kJ/mol with cereblon. CONCLUSION The selected CRBN inhibitor DHFO has demonstrated the highest binding affinity with cereblon protein compared to other molecules. Thalidomide and its derivatives have a new substitute in the form of DHFO, which produces an interaction hotspot on the surface of the cereblon. Ease of chemical synthesis, low toxicity, versatile therapeutic options, and pleiotropism of DHFO analogs provide an opportunity for exploring clinical alternatives with versatile therapeutic potential for a new category of indanedione molecules as novel modulators of E3 ubiquitin ligases.
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Sengupta A, Maity S, Saha P, Ghosh P, Rudra S, Mukhopadhyay C. Diastereo- and regioselective petasis aryl and allyl boration of ninhydrins towards synthesis of functionalized indene-diones and dihydrobenzoindeno-oxazin-ones. Mol Divers 2022:10.1007/s11030-022-10496-4. [PMID: 35913662 DOI: 10.1007/s11030-022-10496-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/08/2022] [Indexed: 10/16/2022]
Abstract
Petasis aryl and allyl borations were accomplished using substituted ninhydrins, boronic acids or 2-allyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane and 1,2-aminophenols in Hexafluoroisopropanol (HFIP) without any catalysts to synthesize different aryl and allyl derivatives of ninhydrins. The nature of substitution in the boronic acids and 1,2-amino phenols was the key factor in determining the diastereo-regioselectivity and the type of product distributions. The products were isolated and characterized by HMBC, HSQC, 1H, 13C NMR experiments and X-ray single crystallographic analysis. A probable reaction pathway involves in situ formation of acyclic and cyclic ninhydrin-amino alcohol adducts, with the positioned hydroxyl group determining the stereo-regioselective outcome via tetracoordinated boron intermediates. A metal free diastereo- and regioselective Petasis aryl and allyl boration of ninhydrins.
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Affiliation(s)
- Ayon Sengupta
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata, 700009, India.,TCG Lifesciences Pvt. Ltd., BN 7, Sector V, Salt Lake City, Kolkata, 700091, India
| | - Suvendu Maity
- Department of Chemistry, R.K. Mission Residencial College, Narendrapur, Kolkata, 700103, India
| | - Pinaki Saha
- Department of Chemistry, R.K. Mission Residencial College, Narendrapur, Kolkata, 700103, India
| | - Prasanta Ghosh
- Department of Chemistry, R.K. Mission Residencial College, Narendrapur, Kolkata, 700103, India
| | - Sonali Rudra
- TCG Lifesciences Pvt. Ltd., BN 7, Sector V, Salt Lake City, Kolkata, 700091, India.
| | - Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata, 700009, India.
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Olyaei A, Ghahremany Z, Sadeghpour M. Rapid and Green One-Pot Synthesis of Novel 2-(4-Hydroxy-2-oxo-2Hchromen-
3-yl)-2-(arylamino)-1H-indene-1,3(2H)-diones. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666210615101248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
A green and efficient protocol was developed for the one-pot three-component synthesis of
novel 2-(4-hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-dione derivatives by
the reaction of 4-hydroxycoumarin, ninhydrin and aromatic amines in the presence of guanidine hydrochloride
as an organocatalyst under solvent-free conditions. The present approach offers several advantages
such as low cost, simple work-up, short reaction times, chromatography-free purification,
high yields and greener conditions.
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Affiliation(s)
- Abolfazl Olyaei
- Department of Chemistry, Payame Noor University (PNU), PO Box 19395-4697, Tehran, Iran
| | - Zahra Ghahremany
- Department of Chemistry, Payame Noor University (PNU), PO Box 19395-4697, Tehran, Iran
| | - Mahdieh Sadeghpour
- Department of Chemistry,
Takestan Branch, Islamic Azad University, Takestan, Iran
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8
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Abdul Salam AA, Nayek U, Mathew G, Unnikrishnan M. Structural, CSD, and computational studies of 6b, 11b-Dihydroxy-6b, 11-b-dihydro-7H-indeno[1,2-b]naptho[2,1-d]furan-7-one, a therapeutic potential small molecule. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Olyaei A, Ebrahimi S, Sadeghpour M. Convenient one-pot synthesis of some novel heteroaryl aminoindandione derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04440-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Settipalli PC, Reddy YP, Gudise VB, Anwar S. Knoevenagel‐Friedel‐Crafts‐Hemiketalization Triple Cascade Reaction: A Diastereoselective Formal [1+2+3] Cyclization Towards Indenonaphthopyran Scaffolds. ChemistrySelect 2021. [DOI: 10.1002/slct.202004619] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Poorna Chandrasekhar Settipalli
- Division of Chemistry Department of Sciences and Humanities Vignan's Foundation for Science Technology and Research (Deemed to be University) Vadlamudi, Guntur - 522 213 Andhra Pradesh India
| | - Yeruva Pavankumar Reddy
- Division of Chemistry Department of Sciences and Humanities Vignan's Foundation for Science Technology and Research (Deemed to be University) Vadlamudi, Guntur - 522 213 Andhra Pradesh India
| | - Veera Babu Gudise
- Division of Chemistry Department of Sciences and Humanities Vignan's Foundation for Science Technology and Research (Deemed to be University) Vadlamudi, Guntur - 522 213 Andhra Pradesh India
| | - Shaik Anwar
- Division of Chemistry Department of Sciences and Humanities Vignan's Foundation for Science Technology and Research (Deemed to be University) Vadlamudi, Guntur - 522 213 Andhra Pradesh India
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11
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Affiliation(s)
- Suven Das
- Department of Chemistry Rishi Bankim Chandra College for Women Naihati 24-Parganas (N), Pin 743165 India
| | - Arpita Dutta
- Department of Chemistry Rishi Bankim Chandra Evening College Naihati, 24-Parganas (N), Pin 743165 India
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12
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Das P, Maity S, Ghosh P, Dutta A, Das S. Condensation of ninhydrin with phenols: Regioselective formation of diverse organic scaffolds and crystal structure studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127260] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Das S. Recent applications of ninhydrin in multicomponent reactions. RSC Adv 2020; 10:18875-18906. [PMID: 35518326 PMCID: PMC9054093 DOI: 10.1039/d0ra02930k] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 04/24/2020] [Indexed: 12/29/2022] Open
Abstract
Ninhydrin (1,2,3-indanetrione hydrate) has a remarkable breadth in different fields, including organic chemistry, biochemistry, analytical chemistry and the forensic sciences. For the past several years, it has been considered an important building block in organic synthesis. Therefore, there is increasing interest in ninhydrin-based multicomponent reactions to rapidly build versatile scaffolds. Most of the works described here are simple reactions with readily available starting materials that result in complex molecular architectures. Some of the synthesized compounds exhibit interesting biological activities and constitute a new hope for anticancer agents. The present review aims to highlight the multicomponent reactions of ninhydrin towards diverse organic molecules during the period from 2014 to 2019. This article aims to review recent multicomponent reactions of ninhydrin towards diverse organic scaffolds, such as indeno-fused heterocycles, spiro-indeno heterocycles, quinoxalines, propellanes, cage-like compounds, and dispiro heterocycles.![]()
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Affiliation(s)
- Suven Das
- Department of Chemistry
- Rishi Bankim Chandra College for Women
- India
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14
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Kochia K, Bayat M, Nasri S, Mohammadi A. Synthesis of new pyrimidine-containing compounds: 5-(2-(alkylamino)-1,3-dioxo-2,3-dihydro-1H-inden-2-yl)-6-hydroxypyrimidine-2,4(1H,3H)-dione derivatives. Mol Divers 2019; 24:1015-1024. [PMID: 31679084 DOI: 10.1007/s11030-019-10009-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/19/2019] [Indexed: 11/29/2022]
Abstract
In this study, the one-pot reaction between primary amines, 1,1-bis-(methylthio)-2-nitroethene, ninhydrin, and barbituric acid as an enolizable C-H-activated compound provides a simple method for the preparation of 5-(2-(alkylamino)-1,3-dioxo-2,3-dihydro-1H-inden-2-yl)-6-hydroxypyrimidine-2,4(1H,3H)-dione derivatives with potential synthetic and pharmacological interest. This reaction shows attractive characteristics, such as substrate availability, good yields, existence of numerous hydrogen-bonding possibilities in product, and its mild conditions in ethanol media.
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Affiliation(s)
- Khudaidad Kochia
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Mohammad Bayat
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran.
| | - Shima Nasri
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Aref Mohammadi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
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Jitta SR, Daram P, Gourishetti K, Misra CS, Polu PR, Shah A, Shreedhara CS, Nampoothiri M, Lobo R. Terminalia tomentosa Bark Ameliorates Inflammation and Arthritis in Carrageenan Induced Inflammatory Model and Freund's Adjuvant-Induced Arthritis Model in Rats. J Toxicol 2019; 2019:7898914. [PMID: 30774656 PMCID: PMC6354132 DOI: 10.1155/2019/7898914] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 11/16/2018] [Accepted: 12/10/2018] [Indexed: 12/28/2022] Open
Abstract
Terminalia tomentosa bark belongs to the family Combretaceae. The plant bark is astringent and useful in the treatment of ulcers, vata, fractures, hemorrhages, bronchitis, and diarrhea. Phytochemical investigation of T. tomentosa bark confirms the presence of flavonoids, polyphenols, and tannins. The plant has not been investigated for its anti-inflammatory and antiarthritic activity. The present study was undertaken to explore its possible anti-inflammatory and antiarthritic activity. Anti-inflammatory activity of alcoholic and aqueous extracts of the bark was assessed by in vivo methods. In vivo antiarthritic potential of the extracts was evaluated by Complete Freund's Adjuvant (CFA) induced arthritis in Wistar rats. Our findings showed that the alcoholic and aqueous extracts exhibited anti-inflammatory activity at 500 mg/kg oral dose in carrageenan-induced hind paw edema and carrageenan-induced air pouch inflammation models. We also found alcoholic as well as aqueous extracts of the bark restored the altered blood and serum parameters caused by the Complete Freund's Adjuvant-induced arthritis in Wistar rats. This study shows that the T. tomentosa bark extracts possess anti-inflammatory activity and have pronounced effects on adjuvant arthritis also. Future studies are necessary to provide deeper insight into the exact mechanism of the action of anti-inflammatory and antiarthritic activity of T. tomentosa.
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Affiliation(s)
- Srinivasa Reddy Jitta
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Prasanthi Daram
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Karthik Gourishetti
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - C. S. Misra
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Picheswara Rao Polu
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Abhishek Shah
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - C. S. Shreedhara
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
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Liargkova T, Eleftheriadis N, Dekker F, Voulgari E, Avgoustakis C, Sagnou M, Mavroidi B, Pelecanou M, Hadjipavlou-Litina D. Small Multitarget Molecules Incorporating the Enone Moiety. Molecules 2019; 24:E199. [PMID: 30621100 PMCID: PMC6337391 DOI: 10.3390/molecules24010199] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/24/2018] [Accepted: 12/28/2018] [Indexed: 12/19/2022] Open
Abstract
Chalcones represent a class of small drug/druglike molecules with different and multitarget biological activities. Small multi-target drugs have attracted considerable interest in the last decade due their advantages in the treatment of complex and multifactorial diseases, since "one drug-one target" therapies have failed in many cases to demonstrate clinical efficacy. In this context, we designed and synthesized potential new small multi-target agents with lipoxygenase (LOX), acetyl cholinesterase (AChE) and lipid peroxidation inhibitory activities, as well as antioxidant activity based on 2-/4- hydroxy-chalcones and the bis-etherified bis-chalcone skeleton. Furthermore, the synthesized molecules were evaluated for their cytotoxicity. Simple chalcone b4 presents significant inhibitory activity against the 15-human LOX with an IC50 value 9.5 µM, interesting anti-AChE activity, and anti-lipid peroxidation behavior. Bis-etherified chalcone c12 is the most potent inhibitor of AChE within the bis-etherified bis-chalcones followed by c11. Bis-chalcones c11 and c12 were found to combine anti-LOX, anti-AchE, and anti-lipid peroxidation activities. It seems that the anti-lipid peroxidation activity supports the anti-LOX activity for the significantly active bis-chalcones. Our circular dichroism (CD) study identified two structures capable of interfering with the aggregation process of Aβ. Compounds c2 and c4 display additional protective actions against Alzheimer's disease (AD) and add to the pleiotropic profile of the chalcone derivatives. Predicted results indicate that the majority of the compounds with the exception of c11 (144 Å) can cross the Blood Brain Barrier (BBB) and act in CNS. The results led us to propose new leads and to conclude that the presence of a double enone group supports better biological activities.
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Affiliation(s)
- Thalia Liargkova
- Department of Pharmaceutical Chemistry, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
| | - Nikolaos Eleftheriadis
- Department of Pharmaceutical Gene Modulation, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Frank Dekker
- Department of Pharmaceutical Gene Modulation, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Efstathia Voulgari
- Department of Pharmaceutical Technology and Pharmaceutical Analysis, School of Pharmacy, University of Patras, Rio Patras 26504, Greece.
| | - Constantinos Avgoustakis
- Department of Pharmaceutical Technology and Pharmaceutical Analysis, School of Pharmacy, University of Patras, Rio Patras 26504, Greece.
| | - Marina Sagnou
- Institute of Biosciences and Applications, National Center for Scientific Research "Demokritos", Agia Paraskevi, Athens 15310, Greece.
| | - Barbara Mavroidi
- Institute of Biosciences and Applications, National Center for Scientific Research "Demokritos", Agia Paraskevi, Athens 15310, Greece.
| | - Maria Pelecanou
- Institute of Biosciences and Applications, National Center for Scientific Research "Demokritos", Agia Paraskevi, Athens 15310, Greece.
| | - Dimitra Hadjipavlou-Litina
- Department of Pharmaceutical Chemistry, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
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Mathew G, Sharma A, Pickering RJ, Rosado CJ, Lemarie J, Mudgal J, Thambi M, Sebastian S, Jandeleit-Dahm KA, de Haan JB, Unnikrishnan MK. A novel synthetic small molecule DMFO targets Nrf2 in modulating proinflammatory/antioxidant mediators to ameliorate inflammation. Free Radic Res 2018; 52:1140-1157. [PMID: 30422019 DOI: 10.1080/10715762.2018.1533636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Inflammation is a protective immune response against invading pathogens, however, dysregulated inflammation is detrimental. As the complex inflammatory response involves multiple mediators, including the involvement of reactive oxygen species, concomitantly targeting proinflammatory and antioxidant check-points may be a more rational strategy. We report the synthesis and anti-inflammatory/antioxidant activity of a novel indanedione derivative DMFO. DMFO scavenged reactive oxygen species (ROS) in in-vitro radical scavenging assays and in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. In acute models of inflammation (carrageenan-induced inflammation in rat paw and air pouch), DMFO effectively reduced paw oedema and leucocyte infiltration with an activity comparable to diclofenac. DMFO stabilised mast cells (MCs) in in-vitro A23187 and compound 48/80-induced assays. Additionally, DMFO stabilised MCs in an antigen (ovalbumin)-induced MC degranulation model in-vivo, without affecting serum IgE levels. In a model of chronic immune-mediated inflammation, Freund's adjuvant-induced arthritis, DMFO reduced arthritic score and contralateral paw oedema, and increased the pain threshold with an efficacy comparable to diclofenac but without being ulcerogenic. Additionally, DMFO significantly reduced serum TNFα levels. Mechanistic studies revealed that DMFO reduced proinflammatory genes (IL1β, TNFα, IL6) and protein levels (COX2, MCP1), with a concurrent increase in antioxidant genes (NQO1, haem oxygenase 1 (HO-1), Glo1, Nrf2) and protein (HO-1) in LPS-stimulated macrophages. Importantly, the anti-inflammatory/antioxidant effect on gene expression was absent in primary macrophages isolated from Nrf2 KO mice suggesting an Nrf2-targeted activity, which was subsequently confirmed using siRNA transfection studies in RAW macrophages. Therefore, DMFO is a novel, orally-active, safe (even at 2 g/kg p.o.), a small molecule which targets Nrf2 in ameliorating inflammation.
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Affiliation(s)
- Geetha Mathew
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India.,b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia.,c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Arpeeta Sharma
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia
| | - Raelene J Pickering
- c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Carlos J Rosado
- c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Jeremie Lemarie
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia
| | - Jayesh Mudgal
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
| | - Magith Thambi
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
| | - Sarine Sebastian
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
| | - Karin A Jandeleit-Dahm
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia.,c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Judy B de Haan
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia
| | - Mazhuvancherry K Unnikrishnan
- d Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
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18
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ElKalyoubi S, Fayed E. Synthesis and Evaluation of Antitumour Activities of Novel Fused Tri- and Tetracyclic Uracil Derivatives. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14798125870610] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Simple one-pot syntheses of indenopyrrolopyrimidines and indolopyrrolopyrimidines were achieved via the cyclocondensation of 6-aminouracils and, respectively, ninhydrin and isatin in the presence of catalytic amounts of glacial acetic acid. Similarly, 5,6-diaminouracil derivatives were used as starting materials for the synthesis of indenopteridines and indolopteridines via their reaction with ninhydrin and isatin, respectively. The synthesised compounds were evaluated for antitumour activity against a human hepatocellular carcinoma cell line (HepG2), some showing antitumour activity comparable with 5-fluorouracil and imatinib.
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Affiliation(s)
- Samar ElKalyoubi
- Department of Organic Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Nasr City, Cairo, Egypt
| | - Eman Fayed
- Department of Organic Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Nasr City, Cairo, Egypt
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Saini Y, Khajuria R, Rana LK, Hundal G, Gupta VK, Kant R, Kapoor KK. Unprecedented reaction of ninhydrin with ethyl cyanoacetate and diethyl malonate on ultrasonic irradiation. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.11.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Biological activity of a small molecule indole analog, 1-[(1H-indol-3-yl)methylene]-2-phenylhydrazine (HMPH), in chronic inflammation. Chem Biol Interact 2016; 244:71-83. [DOI: 10.1016/j.cbi.2015.10.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/15/2015] [Accepted: 10/31/2015] [Indexed: 12/31/2022]
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21
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Chanda T, Singh MS. Developments toward the synthesis and application of 3-hydroxyindanones. Org Biomol Chem 2016; 14:8895-8910. [DOI: 10.1039/c6ob01648k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3-Hydroxyindanone is an important scaffold in many natural products, biologically active compounds, and functional materials. This review provides a comprehensive overview of the construction of 3-hydroxyindanone derivatives and their applications towards pharmaceutically promising drug candidates.
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Affiliation(s)
- Tanmoy Chanda
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - Maya Shankar Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
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Zampakou M, Hatzidimitriou AG, Papadopoulos AN, Psomas G. Neutral and cationic manganese(II)–diclofenac complexes: structure and biological evaluation. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1098633] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Marianthi Zampakou
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonios G. Hatzidimitriou
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios N. Papadopoulos
- Faculty of Food Technology and Nutrition, Department of Nutrition and Dietetics, Alexandrion Technological Educational Institution, Thessaloniki, Greece
| | - George Psomas
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Zampakou M, Tangoulis V, Raptopoulou CP, Psycharis V, Papadopoulos AN, Psomas G. Structurally Diverse Manganese(II)-Diclofenac Complexes Showing Enhanced Antioxidant Activity and Affinity to Serum Albumins in Comparison to Sodium Diclofenac. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500078] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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Mousa BA, Bayoumi AH, Korraa MM, Assy MG, El-Kalyoubi SA. A Novel One-Pot and Efficient Procedure for Synthesis of New Fused Uracil Derivatives for DNA Binding. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ijoc.2015.51005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Structure and biological perspectives of Cu(II)–indomethacin complexes. J Inorg Biochem 2014; 140:185-98. [DOI: 10.1016/j.jinorgbio.2014.07.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/03/2014] [Accepted: 07/08/2014] [Indexed: 11/18/2022]
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26
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Xia L, Somai Magar KB, Lee YR. Synthesis of novel and diverse naphtho[1,2-b]furans by phosphine-catalyzed [3+2] annulation of activated 1,4-naphthoquinones and acetylenecarboxylates. Mol Divers 2014; 19:55-66. [DOI: 10.1007/s11030-014-9555-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 09/12/2014] [Indexed: 01/06/2023]
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27
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Kundu A, Pathak S, Debnath K, Pramanik A. Facile synthesis of 3H,3′H-spiro[benzofuran-2,1′-isoindole]-3,3′-diones using monobromomalononitrile (MBM) as an efficient organo-brominating agent. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.04.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Shankar M, Balasubramaniam A, Gowrishankar NL, Mahendran S. Synthesis and Biological Evaluation of New Bis-Indolyl (3-O-Benzyl-1,2-O-Isopropylidenexylopentadialdose-α-D-Glucofuranose). Pharm Chem J 2014. [DOI: 10.1007/s11094-014-1071-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Arockiya Aarthi Rajathi F, Arumugam R, Saravanan S, Anantharaman P. Phytofabrication of gold nanoparticles assisted by leaves of Suaeda monoica and its free radical scavenging property. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 135:75-80. [PMID: 24811828 DOI: 10.1016/j.jphotobiol.2014.03.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 03/16/2014] [Accepted: 03/17/2014] [Indexed: 11/28/2022]
Abstract
Development of biologically inspired experimental processes for the synthesis of nanoparticles is evolving into an important branch of nanotechnology. An eco-friendly synthesis of inorganic nanoparticle is a fast growing research in the limb of nanotechnology. In the present study, it is reported that Suaeda monoica leaf mediated synthesis of gold nanoparticles by the reduction of gold ions. The formation of gold nanoparticle was confirmed by color changes from turbid brown to deep purple violet color and a characteristic peak at 535 nm. The morphology and structure of synthesized gold nanoparticles were characterized on Scanning Electron Microscopy (SEM) equipped with a Thermo EDAX attachment, Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), (FT-IR), Dynamic Light Scattering (DLS) which reveals that the Au nanoparticles are spherical and the average particle size is 12.96 nm. Crystalline nature of the nanoparticles is confirmed from the XRD pattern. FTIR spectrum indicates that the biomolecules of carboxyl, amine and hydroxyl functional groups involved in the reduction of gold nanoparticles. The biosynthesized gold nanoparticles displayed considerable antioxidant capacity.
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Affiliation(s)
- F Arockiya Aarthi Rajathi
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, India.
| | - R Arumugam
- Department of Plant Biology and Plant Biotechnology, AVC College, Mannampandal, Mayiladuthurai, Tamil Nadu, India
| | - S Saravanan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, India
| | - P Anantharaman
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, India
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30
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Tarushi A, Totta X, Papadopoulos A, Kljun J, Turel I, Kessissoglou DP, Psomas G. Antioxidant activity and interaction with DNA and albumins of zinc–tolfenamato complexes. Crystal structure of [Zn(tolfenamato)2(2,2′-dipyridylketoneoxime)2]. Eur J Med Chem 2014; 74:187-98. [DOI: 10.1016/j.ejmech.2013.12.019] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/20/2013] [Accepted: 12/21/2013] [Indexed: 01/10/2023]
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31
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Zampakou M, Rizeq N, Tangoulis V, Papadopoulos AN, Perdih F, Turel I, Psomas G. Manganese(II) complexes with the non-steroidal anti-inflammatory drug tolfenamic acid: structure and biological perspectives. Inorg Chem 2014; 53:2040-52. [PMID: 24467343 DOI: 10.1021/ic4025487] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Manganese(II) complexes with the non-steroidal anti-inflammatory drug tolfenamic acid (Htolf) with the nitrogen-donor heterocyclic ligands 1,10-phenanthroline (phen), pyridine (py), or 2,2'-bipyridylamine (bipyam) and/or the oxygen-donor ligands H2O or N,N-dimethylformamide (DMF) have been synthesized and characterized. The crystal structures of complexes [Mn(tolf-O)(tolf-O,O')(phen)(H2O)], [Mn2(μ2-tolf-O,O')2(tolf-O,O')2(bipyam)2], [Mn2(μ2-H2O)(μ2-tolf-O,O')2(tolf-O)2(py)4]·1.5MeOH·py, and [Mn(μ2-tolf-O,O')2(DMF)2]n have been determined by X-ray crystallography. The interaction of the complexes with serum albumin proteins was investigated, and relative high binding constant values were calculated. The ability of the compounds to scavenge 1,1-diphenyl-picrylhydrazyl, 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid), and hydroxyl radicals was evaluated, and [Mn(tolf)2(phen)(H2O)] was the most active scavenger among the compounds. The compounds have also exhibited noteworthy in vitro inhibitory activity against soybean lipoxygenase. UV titration studies of the interaction of the complexes with calf-thymus (CT) DNA have proved the binding to CT DNA with [Mn(μ2-tolf)2(DMF)2]n exhibiting the highest DNA-binding constant (Kb = 5.21 (±0.35) × 10(5) M(-1)). The complexes bind to CT DNA probably via intercalation as suggested by DNA-viscosity measurements and competitive studies with ethidium bromide (EB), which revealed the ability of the complexes to displace the DNA-bound EB.
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Affiliation(s)
- Marianthi Zampakou
- Department of General and Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki , GR-54124 Thessaloniki, Greece
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32
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Shankar M, Balasubramaniam A, Gowrishankar NL, Mahendran S. Synthesis and Biological Evaluation of New Bis-Indolyl (3-O-Benzyl-1,2-O-Isopropylidenexylopentadialdose-α-D-Glucofuranose). Pharm Chem J 2014. [DOI: 10.1007/s11094-014-1001-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Luo J, Zhou H, Hu J, Wang R, Tang Q. Efficient catalytic-free method to produce α-aryl cycloalkanones through highly chemoselective coupling of aryl compounds with oxyallyl cations. RSC Adv 2014. [DOI: 10.1039/c4ra01043d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Efficient catalytic-free method to produce α-aryl cycloalkanones through highly chemoselective coupling of aryl compounds with oxyallyl cations at room temperature.
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Affiliation(s)
- Juan Luo
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016, P. R. China
- The Faculty of Laboratory Medicine
| | - Hui Zhou
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016, P. R. China
| | - Jiwei Hu
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016, P. R. China
| | - Rui Wang
- School of Pharmacy & Bioengineering
- Chongqing University of Technology
- Chongqing 400054, P. R. China
| | - Qiang Tang
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016, P. R. China
- The Faculty of Laboratory Medicine
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Talwar S, Nayak PG, Mudgal J, Paul P, Bansal P, Nandakumar K. Evaluation of in vitro antioxidant and in vivo analgesic potential of Terminalia paniculata aqueous bark extract. J Med Food 2013; 16:1153-61. [PMID: 24195750 DOI: 10.1089/jmf.2012.2658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The Terminalia genus includes plants that are used in a variety of food, nutritional products, and traditional medicines. Aqueous bark extract of Terminalia paniculata (TPW) was screened for its antioxidant and analgesic potential. The major polyphenols were identified by high-performance liquid chromatography. In vitro antioxidant potential of TPW was investigated by 1,1-diphenyl-2-picryl hydrazyl (DPPH), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS(2-)) radical assay, nitric oxide (NO) scavenging, superoxide scavenging (O(2-)), Fe(2+) chelating (O-phenanthroline), and ferric reducing/antioxidant power (FRAP) assay. We evaluated the effects of TPW on cell viability, lipopolysaccharide (LPS)-stimulated reactive oxygen species (ROS), nitrite, and cytokines (interleukin [IL] 6 and tumor necrosis factor alpha [TNF-α]) in RAW 264.7 murine macrophages. Evaluation of analgesic activity of TPW was performed using acetic acid-induced writhing and hot plate test in mice. Phytochemical analysis showed the presence of four polyphenols, namely, gallic acid, ellagic acid, rutin, and quercetin. TPW showed maximum superoxide, ABTS(2-), NO, DPPH inhibition, and Fe(2+-)chelating property at 400 μg/mL, respectively. FRAP value was 4.5±0.25 μg Fe(II)/g. TPW, per se, did not affect RAW 264.7 cell viability. In LPS-induced RAW 264.7 cells, TPW attenuated the elevation in ROS, nitrite, IL-6, and TNF-α levels. TPW (100-400 mg/kg, orally) significantly reduced the number of writhes in a dose-dependent manner compared with the control. Similarly, TPW (400 mg/kg, orally) evoked a significant increase in the maximum percentage effect in the hot plate test. The study suggests the efficacy of aqueous bark extract of T. paniculata as a potential antioxidant and analgesic agent.
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Affiliation(s)
- Sahil Talwar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University , Manipal, Karnataka, India
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Tarushi A, Karaflou Z, Kljun J, Turel I, Psomas G, Papadopoulos AN, Kessissoglou DP. Antioxidant capacity and DNA-interaction studies of zinc complexes with a non-steroidal anti-inflammatory drug, mefenamic acid. J Inorg Biochem 2013; 128:85-96. [PMID: 23948577 DOI: 10.1016/j.jinorgbio.2013.07.013] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 07/01/2013] [Accepted: 07/08/2013] [Indexed: 12/31/2022]
Abstract
Zinc(II) complexes of a non-steroidal anti-inflammatory drug, mefenamic acid(=Hmef) in the absence or presence of the nitrogen donor heterocyclic ligands 2,2'-bipyridine(=bipy), 2,2'-bipyridylamine(=bipyam), 2,2'-dipyridylketone oxime(=Hpko) or 1,10-phenanthroline(=phen) have been synthesized and characterized. The crystal structures of [Zn(mef-O,O')2(bipy)], 2, [Zn(mef-O)2(Hpko-N,N')2]·EtOH, 4 and [Zn(mef-O)(mef-O,O')(phen)(H2O)], 5, have been determined by X-ray crystallography showing distinct binding modes of mefenamato carboxylato group, bidentate in 2, monodentate in 4 or both in 5. Interaction studies of the complexes with calf-thymus DNA (CT DNA) have shown that complexes can bind to CT DNA with [Zn(mef-O)2(Hpko)2] exhibiting the highest binding constant to CT DNA (Kb = 1.93(±0.04) × 10(7) M(-1)). The complexes can bind to CT DNA via intercalation as concluded by DNA solution viscosity measurements. Competitive studies with ethidium bromide (EB) have shown that the complexes can displace the DNA-bound EB. The complexes exhibit good binding affinity to serum albumin proteins with [Zn(mef-O)2(H2O)4], 1 exhibiting the highest quenching ability (kq = 1.46 × 10(15) M(-1) s(-1) for human and 5.55 × 10(15) M(-1) s(-1) for bovine serum albumin). All compounds have been tested for their antioxidant and free radical scavenging activity as well as for their in vitro inhibitory activity against soybean lipoxygenase. The scavenging activity is low to moderate against 1,1-diphenyl-picrylhydrazyl (DPPH) radicals and high against hydroxyl and 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS(+·)) radicals, with [Zn(mef-O)2(H2O)4], 1 (ABTS%, 0.1 mM: 94.75(±1.06)%; (·)OH%, 0.1mM: 96.69(±0.27)%; LOX: IC50 = 27.34(±0.90) μM) exhibiting the highest scavenging activity of the ABTS radical cation among the complexes. Additionally, the complexes exhibit higher scavenging and LOX inhibitory activity than free mefenamic acid (ABTS%, 0.1 mM: 66.32(±0.38)%; (·)OH%, 0.1 mM: 92.51(±0.44)%; LOX: IC50 = 48.52(±0.88) μM).
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Affiliation(s)
- Alketa Tarushi
- Laboratory of Inorganic Chemistry, Department of General and Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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Makhija IK, Shreedhara CS, Ram HNA. Mast cell stabilization potential of Sitopaladi churna: An ayurvedic formulation. Pharmacognosy Res 2013; 5:306-8. [PMID: 24174826 PMCID: PMC3807997 DOI: 10.4103/0974-8490.118824] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 04/25/2013] [Accepted: 09/24/2013] [Indexed: 12/02/2022] Open
Abstract
Background: Sitopaladi churna (SPC) is a popular polyherbal ayurvedic formulation used in the treatment of allergy and respiratory diseases. Objective: The present study was aimed to justify the classical use of antiallergic claim by performing the mast cell stabilizing activity of extracts of SPC. Materials and Methods: The protective effect of aqueous extract and methanolic extract - of SPC against compound 48/80-induced mast cell degranulation model was carried out. Results: Sitopaladi churna aqueous extract (SPCA) at the dose of 300 mg/kg and Sitopaladi churna methanolic extract (SPCM) at the doses of 150 and 300 mg/kg showed better protection of mast cell degranulation (65%-74%) and were comparable to the standard drug ketotifen (79%), when peritoneal mast cells were treated with compound 48/80. The protection against mast cell degranulation was significant (P < 0.0001). Conclusion: From the above results, it has been justified that SPC can be used to treat allergic disorders.
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Affiliation(s)
- Inder K Makhija
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Karnataka, India
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Amir M, Javed SA, Kumar H. Synthesis of Some Newer Analogues of 4-Hydroxyphenyl Acetic Acid as Potent Anti-Inflammatory Agents. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200800030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Synthesis of biologically important phthalazinones, 2,3-benzoxazin-1-ones and isoindolinones from ninhydrin and their antimicrobial activity. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Sajan D, Devi TU, Safakath K, Philip R, Němec I, Karabacak M. Ultrafast optical nonlinearity, electronic absorption, vibrational spectra and solvent effect studies of ninhydrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 109:331-343. [PMID: 23563600 DOI: 10.1016/j.saa.2013.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 02/07/2013] [Accepted: 03/02/2013] [Indexed: 06/02/2023]
Abstract
FT-IR, FT-Raman and UV-Vis spectra of the nonlinear optical molecule ninhydrin have been recorded and analyzed. The equilibrium geometry, bonding features, and harmonic vibrational wavenumbers have been investigated with the help of B3LYP density functional theory method. A detailed interpretation of the vibrational spectra is carried out with the aid of normal coordinate analysis following the scaled quantum mechanical force field methodology. Solvent effects have been calculated using time-dependent density functional theory in combination with the polarized continuum model. Natural bond orbital analysis confirms the occurrence of strong intermolecular hydrogen bonding in the molecule. Employing the open-aperture z-scan technique, nonlinear optical absorption of the sample has been studied in the ultrafast and short-pulse excitation regimes, using 100 fs and 5 ns laser pulses respectively. It is found that ninhydrin exhibits optical limiting for both excitations, indicating potential photonic applications.
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Affiliation(s)
- D Sajan
- Department of Physics, Bishop Moore College, Mavelikara, Alappuzha 690 110, Kerala, India.
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Arivazhagan M, Anitha Rexalin D. Molecular structure, vibrational spectral analysis, NBO, HOMO-LUMO and conformational studies of ninhydrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 104:451-460. [PMID: 23274476 DOI: 10.1016/j.saa.2012.11.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Revised: 11/08/2012] [Accepted: 11/16/2012] [Indexed: 06/01/2023]
Abstract
The FT-IR and FT-Raman vibrational spectra of ninhydrin have been recorded in the range 4000-400 cm(-1)and 3600-50 cm(-1), respectively. A detailed vibrational spectral analysis has been carried out and assignments of the observed fundamental bands have been proposed on the basis of peak positions and relative intensities. The optimized molecular geometry, vibrational frequencies, atomic charges, dipole moment, rotational constants and several thermodynamic parameters in the ground state are calculated using ab initio HF and density functional B3LYP methods with 6-311++G(d,p) basis set combination. In order to find the most optimized geometry, the energy calculations are carried out for various possible conformers. Keto and enol forms of ninhydrin are also studied. The condensed summary of the principal NBOs shows the occupancy, orbital energy and the qualitative pattern of delocalization interactions of ninhydrin. The calculated HOMO-LUMO energies reveal that charge transfer occurs within the molecule. The predicted first hyperpolarizability also shows that the ninhydrin molecule have good optical quality and nonlinear optical (NLO) behavior. With the help of specific scaling procedures, the observed vibrational wave numbers in FT-IR and FT-Raman spectra are analyzed and assigned to different normal modes of the molecule.
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Affiliation(s)
- M Arivazhagan
- Department of Physics, A.A. Govt. Arts College, Musiri 621 211, Tamil Nadu, India.
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Tolia C, Papadopoulos AN, Raptopoulou CP, Psycharis V, Garino C, Salassa L, Psomas G. Copper(II) interacting with the non-steroidal antiinflammatory drug flufenamic acid: structure, antioxidant activity and binding to DNA and albumins. J Inorg Biochem 2013; 123:53-65. [PMID: 23528572 DOI: 10.1016/j.jinorgbio.2013.02.009] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/08/2013] [Accepted: 02/20/2013] [Indexed: 12/20/2022]
Abstract
Copper(II) complexes with the non-steroidal antiinflammatory drug flufenamic acid (Hfluf) in the presence of N,N-dimethylformamide (DMF) or nitrogen donor heterocyclic ligands (2,2'-bipyridylamine (bipyam), 1,10-phenanthroline (phen), 2,2'-bipyridine (bipy) or pyridine (py)) have been synthesized and characterized. The crystal structures of [Cu2(fluf)4(DMF)2], 1, and [Cu(fluf)(bipyam)Cl], 2, have been determined by X-ray crystallography. Density functional theory (DFT) (CAM-B3LYP/LANL2DZ/6-31G**) was employed to determine the structure of complex 2 and its analogues (complexes [Cu(fluf)(phen)Cl], 3, [Cu(fluf)(bipy)Cl], 4 and [Cu(fluf)2(py)2], 5). Time-dependent DFT calculations of doublet-doublet transitions show that the lowest-energy band in the absorption spectrum of 2-5 has a mixed d-d/LMCT character. UV study of the interaction of the complexes with calf-thymus DNA (CT DNA) has shown that the complexes can bind to CT DNA with [Cu(fluf)(bipy)Cl] exhibiting the highest binding constant to CT DNA. The complexes can bind to CT DNA via intercalation as concluded by studying the cyclic voltammograms of the complexes in the presence of CT DNA solution and by DNA solution viscosity measurements. Competitive studies with ethidium bromide (EB) have shown that the complexes can displace the DNA-bound EB suggesting strong competition with EB. Flufenamic acid and its Cu(II) complexes exhibit good binding affinity to human or bovine serum albumin protein with high binding constant values. All compounds have been tested for their antioxidant and free radical scavenging activity as well as for their in vitro inhibitory activity against soybean lipoxygenase showing significant activity with [Cu(fluf)(phen)Cl] being the most active.
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Affiliation(s)
- Charikleia Tolia
- Department of General and Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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6b,11b-Dihydroxy-6b,11b-dihydro-7H-indeno[1,2-b]naphtho[2,1-d]furan-7-one (DHFO), a small molecule targeting NF-κB, demonstrates therapeutic potential in immunopathogenic chronic inflammatory conditions. Int Immunopharmacol 2012; 15:182-9. [PMID: 23159605 DOI: 10.1016/j.intimp.2012.10.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 10/28/2012] [Accepted: 10/29/2012] [Indexed: 12/13/2022]
Abstract
6b,11b-Dihydroxy-6b,11b-dihydro-7H-indeno[1,2-b]naphtho[2,1-d]furan-7-one (DHFO), an easily synthesisable, orally bioavailable and relatively non-toxic small molecule synthesised in our lab, was previously reported to possess anti-oxidant, 5-lipoxygenase inhibitory, anti-inflammatory and peripheral analgesic activities. The present work deals with exploration of DHFO's efficacy in immunopathogenic chronic inflammatory conditions - arthritis and allergy. In carrageenan-induced inflammatory air pouch, which resembles the arthritic synovium, DHFO effectively reduced inflammatory redness and swelling and neutrophil infiltration. In complete Freund's adjuvant-induced arthritis, DHFO significantly decreased paw oedema and nitrite levels with efficacy comparable to diclofenac. DHFO inhibited neutrophil activation (observed as decreased myeloperoxidase levels), in both the in vivo models of inflammation. Interestingly, DHFO did not ulcerate the gastrointestinal tract, while diclofenac was observed to be extremely ulcerogenic. In antigen-induced active and passive anaphylaxis (allergy) models, DHFO dose-dependently prevented mesenteric mast cell (MC) degranulation with efficacy comparable to ketotifen. DHFO also inhibited compound 48/80 (C48/80)-induced paw oedema and peritoneal MC degranulation. DHFO stabilised p815 murine MCs stimulated by C48/80 and calcium ionophore-A23187, indicating an action downstream of calcium mobilisation. DHFO's anti-allergic mechanism could be two-pronged involving (1) inhibition of IgE production and/or (2) MC stabilisation. DHFO inhibited lipopolysaccharide (LPS)-induced pro-inflammatory mediator release (ROS, NO, IL-6 levels) and COX2 expression in RAW264.7 murine macrophages. Protein expression studies confirmed DHFO's ability to reduce nuclear levels of NF-κB in LPS-stimulated macrophages. Thus, DHFO is a promising non-ulcerogenic synthetic small molecule lead for immunopathogenic chronic inflammatory conditions.
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Shankar M, Balasubramaniam A, Gowrishankar NL, Mahendran S. Synthesis and biological evaluation of new bis-indolyl (3-O-benzyl-1,2-O-isopropylidenexylopentadialdose-α-D-glucofuranose). Pharm Chem J 2012. [DOI: 10.1007/s11094-012-0804-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mahendran S, Badami S, Ravi S, Thippeswamy BS, Veerapur VP. Antioxidant, analgesic and anti-inflammatory properties of new ninhydrin adduct of embelin. Pharm Chem J 2011. [DOI: 10.1007/s11094-011-0676-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Phenolic compounds isolated from Pilea microphylla prevent radiation-induced cellular DNA damage. Acta Pharm Sin B 2011. [DOI: 10.1016/j.apsb.2011.10.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Pathak S, Kundu A, Pramanik A. Facile synthesis of substituted pyrrole-fused isocoumarins from ninhydrin. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.07.133] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kancheva VD, Saso L, Angelova SE, Foti MC, Slavova-Kasakova A, Daquino C, Enchev V, Firuzi O, Nechev J. Antiradical and antioxidant activities of new bio-antioxidants. Biochimie 2011; 94:403-15. [PMID: 21884748 DOI: 10.1016/j.biochi.2011.08.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 08/11/2011] [Indexed: 11/28/2022]
Abstract
Antioxidants could be promising agents for management of oxidative stress-related diseases. New biologically active compounds, belonging to a rare class of natural lignans with antiangiogenic, antitumoral and DNA intercalating properties, have been recently synthesized. These compounds are benzo[kl]xanthene lignans (1,2) and dihydrobenzofuran neolignans (3,4). The radical scavenging and chain-breaking antioxidant activities of compounds 1-4 were studied by applying different methods: radical scavenging activity by DPPH rapid test, chain-breaking antioxidant activity and quantum chemical calculations. All studied compounds were found to be active as DPPH scavengers but reaction time with DPPH and compounds' concentrations influenced deeply the evaluation. The highest values of radical scavenging activity (%RSAmax) and largest rate constants for reaction with DPPH were obtained for compounds 2 and 3. Comparison of %RSAmax with that of standard antioxidants DL-α-tocopherol (TOH), caffeic acid (CA) and butylated hydroxyl toluene (BHT) give the following new order of %RSA max: TOH (61.1%) > CA (58.6%) > 3 (36.3%) > 2 (28.1%) > 4 (6.7%) > 1 (3.6%) = BHT (3.6%). Chain-breaking antioxidant activities of individual compounds (0.1-1.0 mM) and of their equimolar binary mixtures (0.1 mM) with TOH were determined from the kinetic curves of lipid autoxidation at 80 °C. On the basis of a comparable kinetic analysis with standard antioxidants a new order of the antioxidant efficiency (i.e., protection factor, PF) of compounds 1-4 were obtained: 2 (7.2) ≥ TOH (7.0) ≥ CA (6.7) > 1 (3.1) > 3 (2.2) > ferulic acid FA (1.5) > 4 (0.6); and of the antioxidant reactivity (i.e. inhibition degree, ID): 2 (44.0) >> TOH (18.7) >> CA (9.3) >> 1 (8.4) > 3 (2.8) > FA (1.0) > 4 (0.9). The important role of the catecholic structure in these compounds, which is responsible for the high chain-breaking antioxidant activity, is discussed and a reaction mechanism is proposed. Higher oxidation stability of the lipid substrate was found in the presence of equimolar binary mixtures 2 + TOH, 3 + TOH and 4 + TOH. However, an actual synergism was only obtained for the binary mixtures with compounds 3 and 4. The geometries of compounds and all possible phenoxyl radicals were optimized using density functional theory. For description of the scavenging activity bond dissociation enthalpies (BDE), HOMO energies and spin densities were employed. The best correlation between theoretical and experimental data was obtained for compound 2, with the highest activity, and for compound 4 with the lowest activity. The BDE is the most important theoretical descriptor, which correlates with the experimentally obtained antioxidant activity of the studied benzo[kl]xanthene lignans and dihydrobenzofuran neolignans.
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Affiliation(s)
- V D Kancheva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
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Nickel-quinolones interaction. Part 5-Biological evaluation of nickel(II) complexes with first-, second- and third-generation quinolones. J Inorg Biochem 2011; 105:1273-85. [PMID: 21820989 DOI: 10.1016/j.jinorgbio.2011.06.005] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 06/21/2011] [Accepted: 06/21/2011] [Indexed: 11/22/2022]
Abstract
The nickel(II) complexes with the quinolone antibacterial agents oxolinic acid, flumequine, enrofloxacin and sparfloxacin in the presence of the N,N'-donor heterocyclic ligand 2,2'-bipyridylamine have been synthesized and characterized. The quinolones act as bidentate ligands coordinated to Ni(II) ion through the pyridone oxygen and a carboxylato oxygen. The crystal structure of [(2,2'-bipyridylamine)bis(sparfloxacinato)nickel(II)] has been determined by X-ray crystallography. UV study of the interaction of the complexes with calf-thymus DNA (CT DNA) has shown that they bind to CT DNA with [(2,2'-bipyridylamine)bis(flumequinato)nickel(II)] exhibiting the highest binding constant to CT DNA. The cyclic voltammograms of the complexes have shown that in the presence of CT DNA the complexes can bind to CT DNA by the intercalative binding mode which has also been verified by DNA solution viscosity measurements. Competitive study with ethidium bromide (EB) has shown that the complexes can displace the DNA-bound EB indicating that they bind to DNA in strong competition with EB. The complexes exhibit good binding propensity to human or bovine serum albumin protein having relatively high binding constant values. The biological properties of the [Ni(quinolonato)(2)(2,2'-bipyridylamine)] complexes have been evaluated in comparison to the previously reported Ni(II) quinolone complexes [Ni(quinolonato)(2)(H(2)O)(2)], [Ni(quinolonato)(2)(2,2'-bipyridine)] and [Ni(quinolonato)(2)(1,10-phenanthroline)]. The quinolones and their Ni(II) complexes have been tested for their antioxidant and free radical scavenging activity. They have been also tested in vitro for their inhibitory activity against soybean lipoxygenase.
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Talwar S, Nandakumar K, Nayak PG, Bansal P, Mudgal J, Mor V, Rao CM, Lobo R. Anti-inflammatory activity of Terminalia paniculata bark extract against acute and chronic inflammation in rats. JOURNAL OF ETHNOPHARMACOLOGY 2011; 134:323-8. [PMID: 21182924 DOI: 10.1016/j.jep.2010.12.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 11/04/2010] [Accepted: 12/11/2010] [Indexed: 05/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Terminalia paniculata Roxb. (Family-Combretaceae) is a wild tree commonly used in traditional ayurvedic medicine for the treatment of inflammation of parotid glands and in menstrual disorders. AIM OF THE STUDY To explore the folk use of Terminalia paniculata on pharmacological grounds to evaluate the scientific basis of anti-inflammatory activity. MATERIALS AND METHODS The anti-inflammatory activity of Terminalia paniculata was studied against carrageenan-induced hind paw edema, air pouch inflammation and complete Freund's adjuvant (CFA)-induced arthritis in rats. The aqueous extract of Terminalia paniculata bark (TPW) was administered at the concentrations of 100, 200 and 400mg/kg body weight. RESULTS TPW showed significant (p<0.05) anti-inflammatory activity by reducing the edema volume in carrageenan-induced paw edema in rats. Further, TPW (400mg/kg) also reduced the carrageenan-induced leukocyte migration (50.92 ± 5.71%) and myeloperoxidase activity (49.31 ± 5.24%) in air pouch exudates. TPW (200mg/kg) exhibits anti-rheumatic and analgesic activities by improving the altered haematological milieu (ESR, CRP, RF, WBC, RBC and Hb) and also by inhibiting the flexion scores and radiographic changes in CFA-induced arthritis. This extract also had significant (p<0.05) effects on the occurrence of secondary lesions compared to CFA control. CONCLUSIONS Terminalia paniculata bark may be a potential preventive or therapeutic candidate for the treatment of chronic inflammation and arthritis.
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Affiliation(s)
- Sahil Talwar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka 576 104, India
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Mahendran S, Badami S, Ravi S, Thippeswamy BS, Veerapur VP. Synthesis and Evaluation of Analgesic and Anti-inflammatory Activities of Most Active Free Radical Scavenging Derivatives of Embelin-A Structure-Activity Relationship. Chem Pharm Bull (Tokyo) 2011; 59:913-9. [DOI: 10.1248/cpb.59.913] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Sekar Mahendran
- Department of Pharmaceutical Chemistry, J.S.S. College of Pharmacy
| | | | - Subban Ravi
- Department of Chemistry, Karpagam University
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