101
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Wagare DS, Farooqui M, Keche TD, Durrani A. Efficient and green microwave-assisted one-pot synthesis of azaindolizines in PEG-400 and water. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1223314] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Mazhar Farooqui
- Department of Chemistry, Dr. Rafique Zakaria College for Women, Aurangabad, India
| | - Tushar D. Keche
- Department of Chemistry, Vivekanand College, Aurangabad, India
| | - Ayesha Durrani
- Department of Chemistry, Dr. Rafique Zakaria College for Women, Aurangabad, India
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102
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Swami S, Agarwala A, Shrivastava R. Indium triflate promoted one-pot multicomponent synthesis of structurally diverse 3-amino-imidazo[1,2-a]pyridines. Mol Divers 2016; 21:81-88. [DOI: 10.1007/s11030-016-9699-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 09/06/2016] [Indexed: 11/30/2022]
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103
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Hsu FG, Sheu MJ, Lin CL, Hsieh YW, Lai SW. Use of Zolpidem and Risk of Acute Pyelonephritis in Women: A Population-Based Case-Control Study in Taiwan. J Clin Pharmacol 2016; 57:376-381. [PMID: 27539679 DOI: 10.1002/jcph.815] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 08/14/2016] [Accepted: 08/15/2016] [Indexed: 12/16/2022]
Abstract
The aim of this study was to assess a possible correlation between zolpidem use and acute pyelonephritis (APN) in women in Taiwan. Therefore, we performed a case-control study involving the Taiwan's National Health Insurance Research Database between 2000 and 2011. This study included 3151 female participants aged 20 to 84 years who experienced the first bout of APN (case group) and 6015 randomly selected female participants without APN (control group). Zolpidem use was defined as "current," "early," or "late," if the last remaining 1 tablet for zolpidem was detected within 7 days, between 8 and 14 days, or ≥15 days before the date of APN diagnosis, respectively. The multivariable unconditional logistic regression model was used to calculate the odds ratios (ORs) with 95% confidence intervals (CIs) to assess the correlation between zolpidem use and APN. After adjusting for confounders, the multivariable analysis yielded an adjusted APN OR of 2.2 for participants with current zolpidem use (95%CI 1.7-2.8) compared with participants who never used zolpidem. The adjusted ORs gradually decreased to 1.4 for participants with early zolpidem use (95%CI 0.8-2.5) and 1.1 for participants with late zolpidem use (95%CI 0.9-1.2), but without statistical significance. Only patients with current zolpidem use had a significantly increased relative risk of APN. Additional large confirmatory studies are needed to illustrate a causal relationship. Meanwhile, physicians and pharmacists should be more cautious about the risk of APN when prescribing and dispensing zolpidem in women.
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Affiliation(s)
- Fan-Gen Hsu
- School of Pharmacy, China Medical University, Taichung, Taiwan.,Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
| | - Ming-Jyh Sheu
- School of Pharmacy, China Medical University, Taichung, Taiwan
| | - Cheng-Li Lin
- College of Medicine, China Medical University, Taichung, Taiwan.,Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - Yow-Wen Hsieh
- School of Pharmacy, China Medical University, Taichung, Taiwan.,Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
| | - Shih-Wei Lai
- College of Medicine, China Medical University, Taichung, Taiwan.,Department of Family Medicine, China Medical University Hospital, Taichung, Taiwan
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104
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Subba Rao AV, Vishnu Vardhan MVPS, Subba Reddy NV, Srinivasa Reddy T, Shaik SP, Bagul C, Kamal A. Synthesis and biological evaluation of imidazopyridinyl-1,3,4-oxadiazole conjugates as apoptosis inducers and topoisomerase IIα inhibitors. Bioorg Chem 2016; 69:7-19. [PMID: 27656775 DOI: 10.1016/j.bioorg.2016.09.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 09/01/2016] [Accepted: 09/02/2016] [Indexed: 12/27/2022]
Abstract
A series of imidazopyridinyl-1,3,4-oxadiazole conjugates were synthesized and investigated for their cytotoxic activity and some compounds showed promising cytotoxic activity. Compound 8q (NSC: 763639) exhibited notable growth inhibition that satisfies threshold criteria at single dose (10μM) on all human cancer cell lines. This compound was further evaluated at five dose levels (0.01, 0.1, 1, 10 and 100μM) to obtain GI50 values ranging from 1.30 to 5.64μM. Flow cytometric analysis revealed that compound 8q arrests the A549 cells in sub G1 phase followed by induction of apoptosis which was further confirmed by Annexin-V-FITC, Hoechst nuclear staining, caspase 3 activation, measurement of mitochondrial membrane potential and ROS generation. Topo II mediated DNA relaxation assay results showed that conjugate 8q could significantly inhibit the activity of topo II. Moreover, molecular docking studies also indicated binding to the topoisomerase enzyme (PDBID 1ZXN).
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Affiliation(s)
- A V Subba Rao
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Academy of Scientific and Innovative Research, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - M V P S Vishnu Vardhan
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - N V Subba Reddy
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - T Srinivasa Reddy
- IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Siddiq Pasha Shaik
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Chandrakant Bagul
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad 500 037, India
| | - Ahmed Kamal
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Academy of Scientific and Innovative Research, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Department of Medicinal Chemistry, National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad 500 037, India.
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105
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Régnier S, Bechara WS, Charette AB. Synthesis of 3-Aminoimidazo[1,2-a]pyridines from α-Aminopyridinyl Amides. J Org Chem 2016; 81:10348-10356. [DOI: 10.1021/acs.joc.6b01324] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sophie Régnier
- Centre in Green Chemistry
and Catalysis, Department of Chemistry, University of Montreal, P.O. Box 6128, Station Downtown, Montreal, Quebec H3C 3J7, Canada
| | - William S. Bechara
- Centre in Green Chemistry
and Catalysis, Department of Chemistry, University of Montreal, P.O. Box 6128, Station Downtown, Montreal, Quebec H3C 3J7, Canada
| | - André B. Charette
- Centre in Green Chemistry
and Catalysis, Department of Chemistry, University of Montreal, P.O. Box 6128, Station Downtown, Montreal, Quebec H3C 3J7, Canada
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106
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Lei S, Mai Y, Yan C, Mao J, Cao H. A Carbonylation Approach Toward Activation of Csp2-H and Csp3-H Bonds: Cu-Catalyzed Regioselective Cross Coupling of Imidazo[1,2-a]pyridines with Methyl Hetarenes. Org Lett 2016; 18:3582-5. [DOI: 10.1021/acs.orglett.6b01588] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Sai Lei
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Yingying Mai
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Caijuan Yan
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Jianwen Mao
- Guangdong
Provincial Key Laboratory of Pharmaceutical Bioactive Substances and
School of Basic Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Hua Cao
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China
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107
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Aggarwal R, Singh G, Sanz D, Claramunt RM, Torralba MC, Torres MR. NBS mediated one-pot regioselective synthesis of 2,3-disubstituted imidazo[1,2- a ]pyridines and their unambiguous characterization through 2D NMR and X-ray crystallography. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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108
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Chattopadhyay AC, Shukla L, Kandasamy A, Benegal V. High-dose zolpidem dependence - Psychostimulant effects? A case report and literature review. Ind Psychiatry J 2016; 25:222-224. [PMID: 28659704 PMCID: PMC5479098 DOI: 10.4103/ipj.ipj_80_14] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Zolpidem, an imidazoline nonbenzodiazepine sedative drug, is used widely. Initial reports showed minimal abuse potential. However, multiple reports have appeared of dose escalation and abuse. Subjective effects of high-dose zolpidem are not known. In light of accumulating evidence of abuse potential, we hereby report a case of high-dose dependence and a review of relevant literature. A 33-year-old male presented with 5 years of daily use of 600-1700 mg of zolpidem tartrate. He reported subjective effects of euphoria, intense craving, and inability to stop use. Loss of receptor specificity, pharmacokinetic factors, and different receptor distributions can explain paradoxical stimulatory effects of high-dose zolpidem. Further studies are required to characterize subjective effects of high-dose zolpidem.
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Affiliation(s)
- Abhijna Chandan Chattopadhyay
- Centre for Addiction Medicine, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Lekhansh Shukla
- Centre for Addiction Medicine, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Arun Kandasamy
- Centre for Addiction Medicine, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Vivek Benegal
- Centre for Addiction Medicine, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
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109
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Youn S, Hann CWC, Park B, Lee S, Kim C, Yi K, Chung S. The Sleeping Pill Prescription Rate for Inpatients at a General Hospital. SLEEP MEDICINE RESEARCH 2016. [DOI: 10.17241/smr.2016.00045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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110
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Das D. Multicomponent Reactions in Organic Synthesis Using Copper-Based Nanocatalysts. ChemistrySelect 2016. [DOI: 10.1002/slct.201600414] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Debjit Das
- Centre for Applied Chemistry; Central University of Jharkhand, Brambe; Ranchi- 835205, Jharkhand India
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111
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Mukherjee P, Das AR. Diastereoselective Synthesis of Structurally and Stereochemically Diversified 2-Oxa-7-azabicyclo[4.1.0]hept-3-enyl Carboxylates and Their Potential Application toward the Synthesis of Functionalized Pyranooxazolone and Pyrrole Derivatives through Skeletal Transformations. J Org Chem 2016; 81:5513-24. [DOI: 10.1021/acs.joc.6b00849] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Prasun Mukherjee
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
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112
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Wang Y, Li M, Qian S, Zhang Q, Zhou L, Zuo Z, Lee B, Toh M, Ho T. Zolpidem Mucoadhesive Formulations for Intranasal Delivery: Characterization, In Vitro Permeability, Pharmacokinetics, and Nasal Ciliotoxicity in Rats. J Pharm Sci 2016; 105:2840-2847. [PMID: 27189774 DOI: 10.1016/j.xphs.2016.03.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 03/07/2016] [Accepted: 03/22/2016] [Indexed: 10/21/2022]
Abstract
Zolpidem is a non-benzodiazepine hypnotic for the treatment of insomnia characterized by difficulties with sleep initiation. Our study aimed at developing a zolpidem mucoadhesive formulation with minimal local toxicity, prolonged nasal residence time, and enhanced absorption after intranasal delivery. In vitro permeability studies using artificial membrane and Calu-3 cell culture model indicated efficient permeability of zolpidem. Aqueous solubility of zolpidem was found to be significantly improved by hydroxypropyl-β-cyclodextrin. Various mucoadhesive formulations were then prepared comprising zolpidem, hydroxypropyl-β-cyclodextrin, and mucoadhesive polymers such as hydroxypropyl methylcellulose, sodium carboxymethylcellulose, and sodium alginate. Pharmacokinetic studies in rats demonstrated that intranasally administered zolpidem could achieve significantly faster absorption rate and higher plasma concentration than that from oral route. In comparison with solution formulation (ZLP-S03), the optimized mucoadhesive formulation (ZLP-B01) containing 0.25% hydroxypropyl methylcellulose was found to improve Cmax from 352.6 ± 86.0 to 555.7 ± 175.8 ng/mL, and AUC0-inf from 32,890 ± 7547 to 65,447 ± 36,996 ng·min/mL with mild nasal ciliotoxicity in rats.
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Affiliation(s)
- Yanfeng Wang
- Renascence Therapeutics Limited, 2 Dai Fu Street, Tai Po Industrial Estate, New Territories, Hong Kong
| | - Mi Li
- Renascence Therapeutics Limited, 2 Dai Fu Street, Tai Po Industrial Estate, New Territories, Hong Kong
| | - Shuai Qian
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Qizhi Zhang
- School of Pharmacy, Fudan University, Shanghai, China
| | - Limin Zhou
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Zhong Zuo
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Benjamin Lee
- Renascence Therapeutics Limited, 2 Dai Fu Street, Tai Po Industrial Estate, New Territories, Hong Kong
| | - Melvin Toh
- Renascence Therapeutics Limited, 2 Dai Fu Street, Tai Po Industrial Estate, New Territories, Hong Kong
| | - Tony Ho
- Renascence Therapeutics Limited, 2 Dai Fu Street, Tai Po Industrial Estate, New Territories, Hong Kong.
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113
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Ansari AJ, Sharma S, Pathare RS, Gopal K, Sawant DM, Pardasani RT. Solvent-free Multicomponent Synthesis of Biologically-active Fused-imidazo Heterocycles Catalyzed by Reusable Yb(OTf)3Under Microwave Irradiation. ChemistrySelect 2016. [DOI: 10.1002/slct.201600241] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Arshad J. Ansari
- Department of Pharmacy; Central University of Rajasthan; Bandarsindri, Kishangarh, Ajmer - 305 817 Rajasthan India
| | - Shivani Sharma
- Department of Chemistry; Central University of Rajasthan; Bandarsindri, Kishangarh, Ajmer - 305 817 Rajasthan India
| | - Ramdas S. Pathare
- Department of Chemistry; Central University of Rajasthan; Bandarsindri, Kishangarh, Ajmer - 305 817 Rajasthan India
| | - Kandasamy Gopal
- Department of Chemistry; Central University of Rajasthan; Bandarsindri, Kishangarh, Ajmer - 305 817 Rajasthan India
| | - Devesh M. Sawant
- Department of Pharmacy; Central University of Rajasthan; Bandarsindri, Kishangarh, Ajmer - 305 817 Rajasthan India
| | - R. T. Pardasani
- Department of Chemistry; Central University of Rajasthan; Bandarsindri, Kishangarh, Ajmer - 305 817 Rajasthan India
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114
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Manvar P, Shaikh F, Kakadiya R, Mehariya K, Khunt R, Pandey B, Shah A. Synthesis of novel imidazo[1,2-a]pyridine-4-hydroxy-2H-coumarins by Groebke–Blackburn–Bienaymé multicomponent reaction as potential NS5B inhibitors. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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115
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Swami S, Devi N, Agarwala A, Singh V, Shrivastava R. ZnO nanoparticles as reusable heterogeneous catalyst for efficient one pot three component synthesis of imidazo-fused polyheterocycles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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116
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Transition metal-free, base-promoted hydroalkoxylation: Synthesis of substituted imidazo[2,1-c][1,4]oxazines. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1045-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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117
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Shakoor SMA, Agarwal DS, Kumar A, Sakhuja R. Copper catalyzed direct aerobic double-oxidative cross-dehydrogenative coupling of imidazoheterocycles with aryl acetaldehydes: an articulate approach for dicarbonylation at C-3 position. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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118
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Zhang X, Geng Z. Mechanism of the gold(i)-catalyzed synthesis of imidazo-pyrimidines and imidazo-pyrazines via [3 + 2] dipolar cycloaddition: a DFT study. RSC Adv 2016. [DOI: 10.1039/c6ra07780c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The mechanisms of gold(i)-catalyzed [3 + 2] cycloaddition reactions of pyridinium N-(heteroaryl)-aminides with alkynes have been investigated using DFT calculations.
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Affiliation(s)
- Xinghui Zhang
- College of Chemical Engineering
- Lanzhou University of Arts and Science
- Lanzhou
- P.R. China
| | - Zhiyuan Geng
- Gansu Key Laboratory of Polymer Materials
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-environment-related Polymer Materials
- Ministry of Education
- Northwest Normal University
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119
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Selvaraju M, Ye TY, Li CH, Ho PH, Sun CM. Copper catalyzed aerobic oxidative cyclization and ketonization: one pot synthesis of benzoimidazo[1,2-a]imidazolones. Chem Commun (Camb) 2016; 52:6621-4. [DOI: 10.1039/c6cc01828a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A highly efficient synthesis of benzoimidazo[1,2-a]imidazolone through a novel oxidative 5-exo-dig cyclization-ketonization cascade of 2-aminobenzimidazole, aldehyde and terminal alkyne has been explored under aerobic conditions.
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Affiliation(s)
- Manikandan Selvaraju
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Republic of China
| | - Tzuen-Yang Ye
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Republic of China
| | - Chia-Hsin Li
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Republic of China
- Department of Medicinal and Applied Chemistry
| | - Pei-Heng Ho
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Republic of China
| | - Chung-Ming Sun
- Department of Applied Chemistry
- National Chiao-Tung University
- Hsinchu 300-10
- Republic of China
- Department of Medicinal and Applied Chemistry
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120
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Koti Reddy E, C. R, Sajith AM, K. V. D, C. S, Anwar S. Functionalised dihydroazo pyrimidine derivatives from Morita–Baylis–Hillman acetates: synthesis and studies against acetylcholinesterase as its inhibitors. RSC Adv 2016. [DOI: 10.1039/c6ra12507g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dihydroazo pyrimidine derivatives were synthesized at room temperature using MBH acetates and aminoazole derivatives. The in vitro studies carried on a couple of derivatives exhibited much higher potency for Alzheimer's disease (AD).
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Affiliation(s)
- Eeda Koti Reddy
- Division of Chemistry
- Department of Science and Humanities
- Vignan's Foundation for Science, Technology and Research University-VFSTRU (Vignan University)
- Guntur
- India
| | - Remya C.
- Department of Biotechnology and Microbiology
- Inter-University Centre for Bioscience
- Kannur University
- Thalassery
- India
| | - Ayyiliath M. Sajith
- Post Graduate and Research Department of Chemistry
- Kasargod Govt. College
- Kannur University
- India
| | - Dileep K. V.
- School of Chemistry
- Indian Institute of Science Education and Research
- College of Engineering Thiruvananthapuram
- Trivandrum-695016
- India
| | - Sadasivan C.
- Department of Biotechnology and Microbiology
- Inter-University Centre for Bioscience
- Kannur University
- Thalassery
- India
| | - Shaik Anwar
- Division of Chemistry
- Department of Science and Humanities
- Vignan's Foundation for Science, Technology and Research University-VFSTRU (Vignan University)
- Guntur
- India
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121
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Swami S, Agarwala A, Shrivastava R. Sulfonic acid functionalized silica-coated CuFe2O4 core–shell nanoparticles: an efficient and magnetically separable heterogeneous catalyst for the synthesis of 2-pyrazole-3-amino-imidazo-fused polyheterocycles. NEW J CHEM 2016. [DOI: 10.1039/c6nj02264b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of easily separable magnetic core–shell nanoparticles and their efficient use as catalyst in a multicomponent reaction.
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Affiliation(s)
- Suman Swami
- Department of Chemistry
- Manipal University Jaipur
- Jaipur-303007
- India
| | - Arunava Agarwala
- Department of Chemistry
- Manipal University Jaipur
- Jaipur-303007
- India
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122
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Ramesha AB, Sandhya NC, Pavan Kumar CS, Hiremath M, Mantelingu K, Rangappa KS. A novel approach for the synthesis of imidazo and triazolopyridines from dithioesters. NEW J CHEM 2016. [DOI: 10.1039/c6nj01038e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Various imidazo- and triazolo-pyridines were synthesised by the intramolecular cyclization of pyridine 2-methylamine and dithioesters under mild conditions.
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123
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Yan K, Yang D, Wei W, Lu S, Li G, Zhao C, Zhang Q, Wang H. Copper-catalyzed domino synthesis of benzo[b]thiophene/imidazo[1,2-a]pyridines by sequential Ullmann-type coupling and intramolecular C(sp2)–H thiolation. Org Chem Front 2016. [DOI: 10.1039/c5qo00311c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the synthesis of benzo[b]thiophene/imidazo[1,2-a]pyridines has been developed via copper-catalyzed double C–S bond formation using K2S as a sulfur source.
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Affiliation(s)
- Kelu Yan
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Daoshan Yang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Wei Wei
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Shenglei Lu
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Guoqing Li
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Caixia Zhao
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Qingyun Zhang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Hua Wang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
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124
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Liaw GW, Hung DZ, Chen WK, Lin CL, Lin IC, Kao CH. Relationship Between Acute Benzodiazepine Poisoning and Acute Pancreatitis Risk: A Population-Based Cohort Study. Medicine (Baltimore) 2015; 94:e2376. [PMID: 26717383 PMCID: PMC5291624 DOI: 10.1097/md.0000000000002376] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We designed a population-based retrospective cohort study to investigate the association between the event of benzodiazepine (BZD) poisoning and the risk of acute pancreatitis.In the present study, 12,893 patients with BZD poisoning during 2000 to 2011 were enrolled and matched with 4 comparison patients according to mean age and sex. We determined the cumulative incidences and adjusted hazard ratios of acute pancreatitis.A significant association was observed between BZD poisoning and acute pancreatitis. After adjustment for potential risk factors, the patients with BZD poisoning had a 5.33-fold increased risk of acute pancreatitis compared with the controls without BZD poisoning (HR = 5.33, 95% CI = 2.26-12.60). The results revealed that acute pancreatitis in patients with BZD poisoning occurred in a follow-up time of ≤1 month (HR = 50.0, P < .001), and the risk of acute pancreatitis was no different between the patients with and without BZD poisoning when the follow-up time was >1 month (HR = 1.07, P > .05).This population-based study revealed the positive correlation between the event of BZD poisoning and an increased risk of acute pancreatitis. The findings warrant further large-scale and in-depth investigation.
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Affiliation(s)
- Geng-Wang Liaw
- From the Department of Emergency Medicine (G-WL, D-ZH, W-KC), China Medical University Hospital, Taichung, Taiwan, Management Office for Health Data (C-LL), China Medical University Hospital, College of Medicine (C-LL), China Medical University, Taichung, Department of Family Medicine (I-CL), Changhua Christian Hospital, Changhua, School of Medicine (I-CL), Chung Shan Medical University, Department of Nuclear Medicine and PET Center (C-HK), China Medical University Hospital, Taichung; and Graduate Institute of Clinical Medical Science (C-HK), College of Medicine, China Medical University, Taiwan
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125
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Recent synthetic scenario on imidazo[1,2-a]pyridines chemical intermediate. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2216-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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126
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Goryaeva MV, Burgart YV, Kudyakova YS, Ezhikova MA, Kodess MI, Slepukhin PA, Saloutin VI. Three-Component Synthesis of 7-Hydroxy-7-polyfluoroalkylhexahydroimidazo[1,2-a]pyridin-5(1H)-ones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500822] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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127
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Liao KF, Lin CL, Lai SW, Chen WC. Zolpidem Use Associated With Increased Risk of Pyogenic Liver Abscess: A Case-Control Study in Taiwan. Medicine (Baltimore) 2015; 94:e1302. [PMID: 26266369 PMCID: PMC4616684 DOI: 10.1097/md.0000000000001302] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The purpose of this study was to explore the association between zolpidem use and pyogenic liver abscess in Taiwan.This was a population-based case-control study using the database of the Taiwan National Health Insurance Program since 2000 to 2011. We identified 1325 patients aged 20 to 84 years with the first-attack of pyogenic liver abscess as the cases, and 5082 patients without pyogenic liver abscess matched with sex, age, comorbidities, and index year of hospitalization for pyogenic liver abscess as the controls. Patients whose last remaining 1 tablet for zolpidem was noted ≤7 days before the date of admission for pyogenic liver abscess were defined as current use of zolpidem. Patients whose last remaining 1 tablet for zolpidem was noted >7 days before the date of admission for pyogenic liver abscess were defined as late use of zolpidem. Patients who never received 1 prescription for zolpidem were defined as never use of zolpidem. A multivariable unconditional logistic regression model was used to measure the odds ratio (OR) and 95% confidence interval (CI) to explore the association between zolpidem use and pyogenic liver abscess.After adjustment for possible confounding variables, the adjusted OR of pyogenic liver abscess was 3.89 for patients with current use of zolpidem (95% CI 2.89, 5.23), when compared with those with never use of zolpidem. The adjusted OR decreased to 0.85 for those with late use of zolpidem (95% CI 0.70, 1.03), but without statistical significance.Current use of zolpidem is associated with the increased risk of pyogenic liver abscess. Physicians should take the risk of pyogenic liver abscess into account when prescribing zolpidem.
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Affiliation(s)
- Kuan-Fu Liao
- From the College of Medicine (K-FL), Tzu Chi University, Hualien; Department of Internal Medicine (K-FL), Taichung Tzu Chi General Hospital, Taichung; Graduate Institute of Integrated Medicine (K-FL, W-CC), China Medical University, Taichung; College of Medicine (C-LL, S-WL), China Medical University, Taichung; Management Office for Health Data (C-LL), China Medical University Hospital, Taichung; Department of Family Medicine (S-WL), China Medical University Hospital, Taichung; and Department of Urology (W-CC), China Medical University Hospital, Taichung, Taiwan
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128
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Bharate JB, Abbat S, Bharatam PV, Vishwakarma RA, Bharate SB. CuBr catalyzed aerobic oxidative coupling of 2-aminopyridines with cinnamaldehydes: direct access to 3-formyl-2-phenyl-imidazo[1,2-a]pyridines. Org Biomol Chem 2015; 13:7790-4. [PMID: 26103156 DOI: 10.1039/c5ob00776c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper bromide catalyzed aerobic oxidative coupling of 2-aminopyridines with cinnamaldehydes directly led to the formation of 3-formyl-2-phenyl-imidazo[1,2-a]pyridines. The quantum chemical calculations were performed to trace the reaction mechanism and get insights into the possible reaction pathway. 2-Aminopyridines on coupling with cinnamaldehyde generate (E)-3-phenyl-3-(pyridin-2-ylamino)acrylaldehyde IV as a key intermediate, which undergoes C-N bond formation reaction to produce 3-formyl-2-phenyl-imidazo[1,2-a]pyridines.
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Affiliation(s)
- Jaideep B Bharate
- Medicinal Chemistry Division, CSIR - Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India.
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129
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Synthesis and antimicrobial activity of novel imidazo[1,2-a]pyridinopyrimidine-2,4,6(1H,3H,5H)-triones and thioxopyrimidine-4,6(1H,5H)diones. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2130-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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130
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Dylong A, Sowa M, Goldeman W, Ślepokura K, Drożdżewski P, Szponar B, Matczak-Jon E. Zinc(II) complexes derived from imidazo[1,2-a]pyridin-2-ylacetic acid (HIP-2-ac): [Zn(IP-2-ac)2(H2O)] and unexpectedly, [Zn3(IP-2-ac)6(H2O)]·11H2O. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1048241] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Agnieszka Dylong
- Department of Chemistry, Wrocław University of Technology, Wrocław, Poland
| | - Michał Sowa
- Department of Chemistry, Wrocław University of Technology, Wrocław, Poland
| | - Waldemar Goldeman
- Department of Chemistry, Wrocław University of Technology, Wrocław, Poland
| | | | - Piotr Drożdżewski
- Department of Chemistry, Wrocław University of Technology, Wrocław, Poland
| | - Bogumiła Szponar
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Ewa Matczak-Jon
- Department of Chemistry, Wrocław University of Technology, Wrocław, Poland
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131
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Lillehei AS, Halcón LL, Savik K, Reis R. Effect of Inhaled Lavender and Sleep Hygiene on Self-Reported Sleep Issues: A Randomized Controlled Trial. J Altern Complement Med 2015; 21:430-8. [PMID: 26133206 DOI: 10.1089/acm.2014.0327] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES To compare the effectiveness of lavender (Lavandula angustifolia) and sleep hygiene versus sleep hygiene alone on sleep quantity and sleep quality and to determine sustained effect at two-week follow-up. DESIGN A randomized controlled trial with investigator blinding and steps taken to blind the participants. SETTING Participants' usual sleep setting. SUBJECTS Seventy-nine college students with self-reported sleep issues. INTERVENTIONS The intervention took place over five nights with baseline, postintervention, and two-week follow-up assessments. Both groups practiced good sleep hygiene and wore an inhalation patch on their chest at night. One group wore a patch with 55 μl of lavender essential oil and the other group wore a blank patch. OUTCOME MEASURES Sleep quantity was measured using a Fitbit(®) tracker and a sleep diary, and sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI) and the NIH Patient-Reported Outcomes Measurement Information System (PROMIS) sleep disturbance short form. RESULTS The lavender and sleep hygiene group demonstrated better sleep quality at postintervention and two-week follow-up (PSQI p=0 .01, <0.001 and PROMIS p=0.04, 0.007, respectively). The sleep-hygiene-only group also demonstrated better sleep quality but to a lesser extent (PSQI p=0.02, 0.06 and PROMIS p=0.03, 0.03, respectively). Additionally, a clinical effect was found for the lavender group at postintervention, along with a significant finding for waking feeling refreshed (p=0.01). Sleep quantity did not differ between groups. CONCLUSIONS Lavender and sleep hygiene together, and sleep hygiene alone to a lesser degree, improved sleep quality for college students with self-reported sleep issues, with an effect remaining at follow-up.
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Affiliation(s)
| | - Linda L Halcón
- School of Nursing, University of Minnesota , Minneapolis, MN
| | - Kay Savik
- School of Nursing, University of Minnesota , Minneapolis, MN
| | - Reilly Reis
- School of Nursing, University of Minnesota , Minneapolis, MN
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132
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Increased relative risk of acute pancreatitis in zolpidem users. Psychopharmacology (Berl) 2015; 232:2043-8. [PMID: 25491930 DOI: 10.1007/s00213-014-3833-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 11/27/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVES The aim of this study was to investigate the relationship between zolpidem use and the risk of acute pancreatitis in Taiwan. METHODS In this population-based case-control study using the database from the Taiwan National Health Insurance Program from 2000 to 2011, we selected 4535 subjects aged 20-84 years with the first episode of acute pancreatitis as cases and 18,140 subjects without acute pancreatitis matched for sex, age, and index year as controls. Immediate use of zolpidem was defined as subjects who received at least one prescription for zolpidem within 7 days before the date of diagnosing acute pancreatitis. The absence of zolpidem prescription was defined as never use. The odds ratio (OR) and 95 % confidence interval (CI) were used to evaluate the risk of acute pancreatitis associated with zolpidem use and other comorbidities. RESULTS After adjustment for confounding factors, the multivariable logistic regression model demonstrated that the adjusted OR of acute pancreatitis was 7.20 for immediate use of zolpidem (95 % CI 5.81, 8.92), when compared to those with never use of zolpidem. In further analysis, as a reference of subjects with never use of zolpidem and without any of these comorbidities including alcoholism, biliary stone, diabetes mellitus, hepatitis B, hepatitis C, and hypertriglyceridemia, the adjusted OR was 18.04 in those with immediate use of zolpidem and without any comorbidity (95 % CI 12.71, 25.60). The OR increased to 30.32 in subjects with immediate use of zolpidem and with any comorbidity (95 % CI 23.71, 38.79). CONCLUSIONS Patients actively using zolpidem are at 7-fold increased odds of acute pancreatitis. Clinicians should be more cautious of acute pancreatitis risk among patients with any comorbidity studied when prescribing zolpidem.
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133
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Zhu DD, Chen XB, Huang R, Yan SJ, Lin J. Three-component solvent-free synthesis of fluorine substituted bicyclic pyridines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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134
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Choy PY, Luk KC, Wu Y, So CM, Wang LL, Kwong FY. Regioselective Direct C-3 Arylation of Imidazo[1,2-a]pyridines with Aryl Tosylates and Mesylates Promoted by Palladium–Phosphine Complexes. J Org Chem 2015; 80:1457-63. [DOI: 10.1021/jo502386w] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Pui Ying Choy
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Kwan Chak Luk
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Yinuo Wu
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Chau Ming So
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Lai-lai Wang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Fuk Yee Kwong
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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135
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Kielesiński Ł, Tasior M, Gryko DT. Polycyclic imidazo[1,2-a]pyridine analogs – synthesis via oxidative intramolecular C–H amination and optical properties. Org Chem Front 2015. [DOI: 10.1039/c4qo00248b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Oxidative C–H amination has proved to be an efficient strategy to construct pyrido[2′,1′:2,3]imidazo[4,5-b]indoles and their π-expanded analogs.
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Affiliation(s)
- Łukasz Kielesiński
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Mariusz Tasior
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Daniel T. Gryko
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
- Warsaw University of Technology
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136
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Tachikawa Y, Nagasawa Y, Furuhashi S, Cui L, Yamaguchi E, Tada N, Miura T, Itoh A. Metal-free synthesis of imidazopyridine from nitroalkene and 2-aminopyridine in the presence of a catalytic amount of iodine and aqueous hydrogen peroxide. RSC Adv 2015. [DOI: 10.1039/c4ra14970j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have developed a metal-free synthetic method for 3-nitroimidazo[1,2-a]pyridines from nitroalkenes and 2-aminopyridines using catalytic amounts of iodine and aqueous hydrogen peroxide as a terminal oxidant.
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Affiliation(s)
| | | | | | - Lei Cui
- Gifu Pharmaceutical University
- Gifu 501-1196
- Japan
| | | | | | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences
- Hachioji
- Japan
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137
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Bagdi PR, Basha RS, Khan AT. Synthesis of 2-triazolyl-imidazo[1,2-a]pyridine through a one-pot three-component reaction using a nano copper oxide assisted click-catalyst. RSC Adv 2015. [DOI: 10.1039/c5ra09671e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The syntheses of 2-triazolyl imidazo[1,2-a]pyridine were accomplished through 5-exo dig cyclisation using 5 mol% nanocopper oxide together with 10 mol% sodium ascorbate as a click-catalyst in ethanol at 70 °C.
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Affiliation(s)
- Prasanta Ray Bagdi
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - R. Sidick Basha
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Abu T. Khan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
- Vice-Chancellor
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138
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Kundu S, Basu B. Graphene oxide (GO)-catalyzed multi-component reactions: green synthesis of library of pharmacophore 3-sulfenylimidazo[1,2-a]pyridines. RSC Adv 2015. [DOI: 10.1039/c5ra04983k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphene oxide (GO)-catalyzed multi-component reactions: green synthesis of library of pharmacophore 3-sulfenylimidazo[1,2-a]pyridines
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Affiliation(s)
- Samir Kundu
- Department of Chemistry
- North Bengal University
- Darjeeling 734013
- India
| | - Basudeb Basu
- Department of Chemistry
- North Bengal University
- Darjeeling 734013
- India
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139
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Cao H, Chen L, Liu J, Cai H, Deng H, Chen G, Yan C, Chen Y. Regioselective copper-catalyzed thiolation of imidazo[1,2-a]pyridines: an efficient C–H functionalization strategy for C–S bond formation. RSC Adv 2015. [DOI: 10.1039/c5ra01342a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Regioselective copper-catalyzed thiolation of imidazo[1,2-a]pyridines.
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Affiliation(s)
- Hua Cao
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Longbin Chen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Jingyun Liu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Huiyin Cai
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Hao Deng
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Guijun Chen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Caijuan Yan
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Ya Chen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
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140
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Synthesis of imidazo[1,2-a]pyridin-chromones by a MW assisted Groebke–Blackburn–Bienaymé process. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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141
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Kumar GS, Ragini SP, Kumar AS, Meshram HM. A copper-catalyzed multi-component reaction accessing fused imidazo-heterocycles via C–H functionalization. RSC Adv 2015. [DOI: 10.1039/c5ra09025c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
An efficient synthesis of fused imidazo-heterocycles is described using Cu(OTf)2 in [bmim]BF4 by the multi-component reaction of pyridin-2(1H)-one or thiazol/benzo[d]thiazol-2(3H)-ones with O-tosylhydroxyl amine and acetophenones under microwave irradiation.
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Affiliation(s)
- G. Santosh Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad – 500 007
- India
| | - S. Pushpa Ragini
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad – 500 007
- India
| | - A. Sanjeeva Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad – 500 007
- India
| | - H. M. Meshram
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad – 500 007
- India
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142
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Chennapuram M, Emmadi NR, Bingi C, Atmakur K. I2–DMSO–PTSA: a simple and metal free oxidative cross coupling of imidazo[1,2-a]pyridines and methylketones. RSC Adv 2015. [DOI: 10.1039/c4ra15835k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A simple, metal free and selective oxidative cross-coupling promoted by I2–DMSO in presence of PTSA has been developed with the use of imidazo[1,2-a]pyridines (1) and methyl ketones (2) to access 3 in a one pot reaction.
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Affiliation(s)
- Madhu Chennapuram
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of ChemicalTechnology
- Hyderabad 500 007
- India
| | - Narender Reddy Emmadi
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of ChemicalTechnology
- Hyderabad 500 007
- India
| | - Chiranjeevi Bingi
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of ChemicalTechnology
- Hyderabad 500 007
- India
| | - Krishnaiah Atmakur
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of ChemicalTechnology
- Hyderabad 500 007
- India
- AcSIR-Indian Institute of Chemical Technology
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143
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Mouradzadegun A, Ma'mani L, Mahdavi M, Rashid Z, Shafiee A, Foroumadi A, Dianat S. Sulfamic acid-functionalized hydroxyapatite-encapsulated γ-Fe2O3 nanoparticles as a magnetically recoverable catalyst for synthesis of N-fused imidazole-quinoline conjugates under solvent-free conditions. RSC Adv 2015. [DOI: 10.1039/c5ra12307k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
γ-Fe2O3-HAp-(CH2)3-NHSO3H was shown to be a powerful and reusable catalyst for the synthesis of N-fused imidazole-quinoline conjugates under solvent-free conditions.
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Affiliation(s)
- Arash Mouradzadegun
- Department of Chemistry
- Faculty of Sciences
- Shahid Chamran University
- Ahvaz
- Iran
| | - Leila Ma'mani
- Nanotechnology Department
- Agricultural Biotechnology Research Institute of Iran (ABRII)
- Karaj
- Iran
| | - Mohammad Mahdavi
- Department of Medical Chemistry
- Faculty of Pharmacy and Pharmaceutical Science Research Center
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Zahra Rashid
- Nanobiotechnology Research Center
- Avicenna Research Institute
- ACECR
- Tehran
- Iran
| | - Abbas Shafiee
- Department of Medical Chemistry
- Faculty of Pharmacy and Pharmaceutical Science Research Center
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Alireza Foroumadi
- Department of Medical Chemistry
- Faculty of Pharmacy and Pharmaceutical Science Research Center
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Shima Dianat
- Department of Chemistry
- Faculty of Sciences
- Shahid Chamran University
- Ahvaz
- Iran
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144
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Liu S, Xi H, Zhang J, Wu X, Gao Q, Wu A. Organopromoted direct synthesis of 6-iodo-3-methylthioimidazo[1,2-a]pyridines via convergent integration of three self-sorting domino sequences. Org Biomol Chem 2015. [DOI: 10.1039/c5ob01313e] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An NH2CN-promoted convergent integration of three self-sorting domino sequences is described for the construction of 6-iodo-3-methylthioimidazo[1,2-a]pyridines from aryl methyl ketones and 2-aminopyridines.
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Affiliation(s)
- Shan Liu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Hailing Xi
- State Key Laboratory of NBC Protection for Civilian
- Beijing 102205
- China
| | - Jingjing Zhang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Xia Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Qinghe Gao
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Anxin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
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145
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Zhai LH, Guo LH, Sun BW. Copper-catalyzed intramolecular dehydrogenative cyclization: direct access to sensitive formyl-substituted imidazo[1,2-a]pyridines. RSC Adv 2015. [DOI: 10.1039/c5ra19085a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A direct method for the synthesis of formyl-substituted imidazo[1,2-a]pyridines was achieved easily from cyclization of aminopyridines and cinnamaldehydes via copper catalysis.
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Affiliation(s)
- Li-Hai Zhai
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- China
- Lunan Pharmaceutical Co. Ltd
| | | | - Bai-Wang Sun
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- China
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146
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Abstract
Because of proven efficacy, reduced side effects, and less concern about addiction, non-benzodiazepine receptor agonists (non-BzRA) have become the most commonly prescribed hypnotic agents to treat onset and maintenance insomnia. First-line treatment is cognitive-behavioral therapy. When pharmacologic treatment is indicated, non-BzRA are first-line agents for the short-term and long-term management of transient and chronic insomnia related to adjustment, psychophysiologic, primary, and secondary causation. In this article, the benefits and risks of non-BzRA are reviewed, and the selection of a hypnotic agent is defined, based on efficacy, pharmacologic profile, and adverse events.
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Affiliation(s)
- Philip M Becker
- Department of Psychiatry, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA; Sleep Medicine Associates of Texas, 5477 Glen Lakes Drive, Suite 100, Dallas, TX 75231, USA.
| | - Manya Somiah
- Sleep Medicine Associates of Texas, 5477 Glen Lakes Drive, Suite 100, Dallas, TX 75231, USA
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147
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Delgado O, Delgado F, Vega JA, Trabanco AA. N-Bridged 5,6-bicyclic pyridines: Recent applications in central nervous system disorders. Eur J Med Chem 2014; 97:719-31. [PMID: 25542766 DOI: 10.1016/j.ejmech.2014.12.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 12/16/2014] [Accepted: 12/19/2014] [Indexed: 12/21/2022]
Abstract
The search for novel heterobicyclic compounds within the drug-like chemical space continues to be an area of interest in medicinal chemistry. Unsaturated N-bridgehead heterocycles are well represented in marketed drugs for a variety of therapeutic areas, and continue to play an important role in central nervous system (CNS) drug discovery programs. Examples of medicinal chemistry strategies that make use of N-bridged 5,6-bicyclic pyridines are discussed here in this Minireview, which covers the literature from 2010 up to 2014. B1-class imidazopyridines and B3-class pyrazolopyridines have proven to be at the forefront of molecular prototypes that are capable of interacting with disease relevant targets in neurodegeneration and neuropsychiatry.
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Affiliation(s)
- Oscar Delgado
- Neuroscience Medicinal Chemistry, Janssen Research & Development, Janssen-Cilag S.A., C/Jarama 75, 45007 Toledo, Spain
| | - Francisca Delgado
- Neuroscience Medicinal Chemistry, Janssen Research & Development, Janssen-Cilag S.A., C/Jarama 75, 45007 Toledo, Spain
| | - Juan Antonio Vega
- Neuroscience Medicinal Chemistry, Janssen Research & Development, Janssen-Cilag S.A., C/Jarama 75, 45007 Toledo, Spain
| | - Andrés A Trabanco
- Neuroscience Medicinal Chemistry, Janssen Research & Development, Janssen-Cilag S.A., C/Jarama 75, 45007 Toledo, Spain.
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148
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149
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Peshkov VA, Peshkov AA, Pereshivko OP, Van Hecke K, Zamigaylo LL, Van der Eycken EV, Gorobets NY. Three-component reaction of a 2-aminoazine, a 2-oxoaldehyde, and a cyclic 1,3-dicarbonyl compound for the synthesis of imidazo[1,2-a]azine derivatives. ACS COMBINATORIAL SCIENCE 2014; 16:535-42. [PMID: 25170540 DOI: 10.1021/co5000695] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A three-component reaction of a 2-aminoazine, a 2-oxoaldehyde, and a cyclic 1,3-dicarbonyl compound providing access toward a novel class of imidazo[1,2-a]azine derivatives was developed and studied. The scope of the process was thoroughly explored under three different reaction conditions resulting in the generation of a small library of title compounds and highlighting the possibility of case-specific approach.
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Affiliation(s)
- Vsevolod A. Peshkov
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Anatoly A. Peshkov
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Olga P. Pereshivko
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Kristof Van Hecke
- Department
of Inorganic and Physical Chemistry, Gent University, Krijgslaan
281 S3, B-9000, Gent, Belgium
| | - Lali L. Zamigaylo
- SSI “Institute for Single Crystals” of National Academy of Science of Ukraine, Lenin Avenue 60, Kharkiv 61001, Ukraine
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Nikolay Yu. Gorobets
- SSI “Institute for Single Crystals” of National Academy of Science of Ukraine, Lenin Avenue 60, Kharkiv 61001, Ukraine
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150
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Shinde AH, Srilaxmi M, Satpathi B, Sharada DS. A highly efficient synthesis of imidazo-fused polyheterocycles via Groebke–Blackburn–Bienaymè reaction catalyzed by LaCl3·7H2O. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.126] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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