1
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Qiu LY, Ren N, Deng Z, Chen J, Deng H, Zhang H, Cao W, Tang XJ. The Practical Access to Fluoroalkylated Pyrazolo[1,5- c]quinazolines by Fluoroalkyl-Promoted [3 + 2] Cycloaddition Reaction. J Org Chem 2023; 88:10180-10189. [PMID: 37410945 DOI: 10.1021/acs.joc.3c00025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
The efficient synthesis of fluoroalkylated pyrazolo[1,5-c]quinazolines by reactions of 3-diazoindolin-2-ones with methyl β-fluoroalkylpropionates has been achieved. This protocol affords two regioisomers of fluoroalkylated pyrazolo[1,5-c]quinazolines with excellent yields in total. The dipolarophilicity of methyl β-fluoroalkylpropionates enhanced by perfluoroalkyl groups is crucial for the high efficiency of this [3 + 2] cycloaddition reaction.
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Affiliation(s)
- Liu-Yan Qiu
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Nan Ren
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Zhen Deng
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Jie Chen
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Hongmei Deng
- Laboratory for Microstructures and Instrumental Analysis and Research Center, Shanghai University, Shanghai 200444, China
| | - Hui Zhang
- Laboratory for Microstructures and Instrumental Analysis and Research Center, Shanghai University, Shanghai 200444, China
| | - Weiguo Cao
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xiao-Jun Tang
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
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2
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Kumar M, Joshi G, Arora S, Singh T, Biswas S, Sharma N, Bhat ZR, Tikoo K, Singh S, Kumar R. Design and Synthesis of Non-Covalent Imidazo[1,2- a]quinoxaline-Based Inhibitors of EGFR and Their Anti-Cancer Assessment. Molecules 2021; 26:1490. [PMID: 33803355 PMCID: PMC7967119 DOI: 10.3390/molecules26051490] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 03/03/2021] [Accepted: 03/03/2021] [Indexed: 12/14/2022] Open
Abstract
A series of 30 non-covalent imidazo[1,2-a]quinoxaline-based inhibitors of epidermal growth factor receptor (EGFR) were designed and synthesized. EGFR inhibitory assessment (against wild type) data of compounds revealed 6b, 7h, 7j, 9a and 9c as potent EGFRWT inhibitors with IC50 values of 211.22, 222.21, 193.18, 223.32 and 221.53 nM, respectively, which were comparable to erlotinib (221.03 nM), a positive control. Furthermore, compounds exhibited excellent antiproliferative activity when tested against cancer cell lines harboring EGFRWT; A549, a non-small cell lung cancer (NSCLC), HCT-116 (colon), MDA-MB-231 (breast) and gefitinib-resistant NSCLC cell line H1975 harboring EGFRL858R/T790M. In particular, compound 6b demonstrated significant inhibitory potential against gefitinib-resistant H1975 cells (IC50 = 3.65 μM) as compared to gefitinib (IC50 > 20 μM). Moreover, molecular docking disclosed the binding mode of the 6b to the domain of EGFR (wild type and mutant type), indicating the basis of inhibition. Furthermore, its effects on redox modulation, mitochondrial membrane potential, cell cycle analysis and cell death mode in A549 lung cancer cells were also reported.
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Affiliation(s)
- Manvendra Kumar
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; (M.K.); (G.J.); (S.A.); (S.B.)
| | - Gaurav Joshi
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; (M.K.); (G.J.); (S.A.); (S.B.)
- School of Pharmacy, Graphic Era Hill University, Dehradun 248171, Uttarakhand, India
| | - Sahil Arora
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; (M.K.); (G.J.); (S.A.); (S.B.)
| | - Tashvinder Singh
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda 151401, Punjab, India; (T.S.); (S.S.)
| | - Sajal Biswas
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; (M.K.); (G.J.); (S.A.); (S.B.)
| | - Nisha Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar 160062, Punjab, India; (N.S.); (Z.R.B.); (K.T.)
| | - Zahid Rafiq Bhat
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar 160062, Punjab, India; (N.S.); (Z.R.B.); (K.T.)
| | - Kulbhushan Tikoo
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar 160062, Punjab, India; (N.S.); (Z.R.B.); (K.T.)
| | - Sandeep Singh
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda 151401, Punjab, India; (T.S.); (S.S.)
| | - Raj Kumar
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; (M.K.); (G.J.); (S.A.); (S.B.)
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3
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Joshi G, Sharma M, Kalra S, Gavande NS, Singh S, Kumar R. Design, synthesis, biological evaluation of 3,5-diaryl-4,5-dihydro-1H-pyrazole carbaldehydes as non-purine xanthine oxidase inhibitors: Tracing the anticancer mechanism via xanthine oxidase inhibition. Bioorg Chem 2021; 107:104620. [PMID: 33454509 DOI: 10.1016/j.bioorg.2020.104620] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/26/2020] [Accepted: 12/29/2020] [Indexed: 12/19/2022]
Abstract
Xanthine oxidase (XO) has been primarily targeted for the development of anti-hyperuriciemic /anti-gout agents as it catalyzes the conversion of xanthine and hypoxanthine into uric acid. XO overexpression in various cancer is very well correlated due to reactive oxygen species (ROS) production and metabolic activation of carcinogenic substances during the catalysis. Herein, we report the design and synthesis of a series of 3,5-diaryl-4,5-dihydro-1H-pyrazole carbaldehyde derivatives (2a-2x) as xanthine oxidase inhibitors (XOIs). A docking model was developed for the prediction of XO inhibitory activity of our novel compounds. Furthermore, our compounds anticancer activity results in low XO expression and XO-harboring cancer cells both in 2D and 3D-culture models are presented and discussed. Among the array of synthesized compounds, 2b and 2m emerged as potent XO inhibitors having IC50 values of 9.32 ± 0.45 µM and 10.03 ± 0.43 µM, respectively. Both compounds induced apoptosis, halted the cell cycle progression at the G1 phase, elevated ROS levels, altered mitochondrial membrane potential, and inhibited antioxidant enzymes. The levels of miRNA and expression of redox sensors in cells were also altered due to increase oxidative stress induced by our compounds. Compounds 2b and 2m hold a great promise for further development of XOIs for the treatment of XO-harboring tumors.
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Affiliation(s)
- Gaurav Joshi
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151 001, India
| | - Manisha Sharma
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151 001, India
| | - Sourav Kalra
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda 151 001, India
| | - Navnath S Gavande
- Department of Pharmaceutical Sciences, Wayne State University College of Pharmacy and Health Sciences, Detroit, MI 48201, USA.
| | - Sandeep Singh
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda 151 001, India.
| | - Raj Kumar
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products, School of Health Sciences, Central University of Punjab, Bathinda 151 001, India.
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4
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Zhao H, Hu X, Zhang Y, Tang C, Feng B. Progress in Synthesis and Bioactivity Evaluation of Pyrazoloquinazolines. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/1570180815666181017120100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
This paper reviews the research progress of pyrazoloquinazolines which
widely used in the field of medicine and pesticide in recent years. Five types of
pyrazoloquinazolines are introduced: pyrazolo [4,3-h]quinazolines, pyrazolo[1,5-c]quinazolines,
pyrazolo[4,3-f]quinazolines, pyrazolo[1,5-a] quinazolines , pyrazolo[1,5-b]quinazolines, and their
new progress in the synthesis methods and treatment of diseases.
Methodology:
The derivatives of pyrazoloquinazolines exhibit a wide range of pharmacological
properties such as antibacterial, anticancer, antioxidants, anti-inflammatory, anti-diabetic, antiviral
activities. Consequently, their syntheses have attracted significant interest. Various methodologies
have been developed for the synthesis and functionalization of these class of compounds.
Conclusion:
In the present article, the relevant and recent advances in the field will be briefly
covered.
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Affiliation(s)
- Hui Zhao
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China
| | - Xiaoxia Hu
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China
| | - Yue Zhang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China
| | - Chunlei Tang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China
| | - Bainian Feng
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China
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5
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Liu L, Li L, Mao S, Wang X, Zhou MD, Zhao YL, Wang H. Synthesis of pyrazolo[1,5-c]quinazoline derivatives through the copper-catalyzed domino reaction of o-alkenyl aromatic isocyanides with diazo compounds. Chem Commun (Camb) 2020; 56:7665-7668. [DOI: 10.1039/d0cc00594k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Various o-alkenyl aromatic isocyanides were prepared from readily available reactants for their double annulation with diazo compounds for a one-pot synthesis of pyrazolo[1,5-c]quinazolines under mild reaction conditions.
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Affiliation(s)
- Lu Liu
- School of Chemistry and Materials Science
- Liaoning Shihua University
- Fushun 113001
- People's Republic of China
| | - Lei Li
- School of Chemistry and Materials Science
- Liaoning Shihua University
- Fushun 113001
- People's Republic of China
| | - Shukuan Mao
- School of Chemistry and Materials Science
- Liaoning Shihua University
- Fushun 113001
- People's Republic of China
| | - Xin Wang
- School of Chemistry and Materials Science
- Liaoning Shihua University
- Fushun 113001
- People's Republic of China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science
- Liaoning Shihua University
- Fushun 113001
- People's Republic of China
| | - Yu-long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
| | - He Wang
- School of Chemistry and Materials Science
- Liaoning Shihua University
- Fushun 113001
- People's Republic of China
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6
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Joshi G, Kalra S, Yadav UP, Sharma P, Singh PK, Amrutkar S, Ansari AJ, Kumar S, Sharon A, Sharma S, Sawant DM, Banerjee UC, Singh S, Kumar R. E-pharmacophore guided discovery of pyrazolo[1,5-c]quinazolines as dual inhibitors of topoisomerase-I and histone deacetylase. Bioorg Chem 2020; 94:103409. [DOI: 10.1016/j.bioorg.2019.103409] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/27/2019] [Accepted: 10/28/2019] [Indexed: 12/27/2022]
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7
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Exploration of Pd-catalysed four-component tandem reaction for one-pot assembly of pyrazolo[1,5-c]quinazolines as potential EGFR inhibitors. Bioorg Chem 2019; 93:103314. [DOI: 10.1016/j.bioorg.2019.103314] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/12/2019] [Accepted: 09/24/2019] [Indexed: 02/07/2023]
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8
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Joshi G, Wani AA, Sharma S, Bhutani P, Bharatam PV, Paul AT, Kumar R. Unanticipated Cleavage of 2-Nitrophenyl-Substituted N-Formyl Pyrazolines under Bechamp Conditions: Unveiling the Synthesis of 2-Aryl Quinolines and Their Mechanistic Exploration via DFT Studies. ACS OMEGA 2018; 3:18783-18790. [PMID: 31458441 PMCID: PMC6643473 DOI: 10.1021/acsomega.8b02682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 12/19/2018] [Indexed: 05/05/2023]
Abstract
We herein report for the first time an unusual decomposition of 2-nitrophenyl-substituted N-formyl pyrazolines under Bechamp reduction condition employed to yield 2-aryl quinolines exclusively instead of pyrazolo[1,5-c]quinazolines. The reaction investigation suggests acid-mediated cleavage of 1 followed by a retro-Michael addition, and a subsequent in situ intramolecular reductive cyclization through a modified Friedlander mechanism afforded 2-aryl quinolines (2) in good yields. The proposed mechanistic pathways were supported via experimental evidence and density functional theory studies. B3LYP/6-31+G(d) analysis indicated the involvement of trans-2-hydroxyaminochalcone as a key intermediate and its isomerization and cyclization, leading to unusual product formation.
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Affiliation(s)
- Gaurav Joshi
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda 151001, Punjab, India
| | - Aabid Abdullah Wani
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali 160062, India
| | - Sahil Sharma
- Department
of Pharmaceutical Chemistry, ISF College
of Pharmacy, Moga 142001, India
| | - Priyadeep Bhutani
- Laboratory
of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani Campus, Pilani 333031, Rajasthan, India
| | - Prasad V. Bharatam
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali 160062, India
| | - Atish T. Paul
- Laboratory
of Natural Product Chemistry, Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Pilani Campus, Pilani 333031, Rajasthan, India
| | - Raj Kumar
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda 151001, Punjab, India
- Department
of Pharmaceutical Chemistry, ISF College
of Pharmacy, Moga 142001, India
- E-mail: ,
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9
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Gálvez J, Polo S, Insuasty B, Gutiérrez M, Cáceres D, Alzate-Morales JH, De-la-Torre P, Quiroga J. Design, facile synthesis, and evaluation of novel spiro- and pyrazolo[1,5-c]quinazolines as cholinesterase inhibitors: Molecular docking and MM/GBSA studies. Comput Biol Chem 2018; 74:218-229. [DOI: 10.1016/j.compbiolchem.2018.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/26/2018] [Accepted: 03/03/2018] [Indexed: 11/27/2022]
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10
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Kaur G, Cholia RP, Joshi G, Amrutkar SM, Kalra S, Mantha AK, Banerjee UC, Kumar R. Anticancer activity of dihydropyrazolo[1,5-c
]quinazolines against rat C6 glioma cells via inhibition of topoisomerase II. Arch Pharm (Weinheim) 2018; 351:e1800023. [DOI: 10.1002/ardp.201800023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/08/2018] [Accepted: 04/11/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Gagandeep Kaur
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products; Central University of Punjab; Bathinda India
| | - Ravi P. Cholia
- Department of Animal Sciences; Central University of Punjab; Bathinda India
| | - Gaurav Joshi
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products; Central University of Punjab; Bathinda India
| | - Suyog M. Amrutkar
- Department of Pharmaceutical Technology (Biotechnology); National Institute of Pharmaceutical Education and Research (NIPER) S. A. S. Nagar; Mohali India
| | - Sourav Kalra
- Department of Human Genetics and Molecular Medicine; Central University of Punjab; Bathinda India
| | - Anil K. Mantha
- Department of Animal Sciences; Central University of Punjab; Bathinda India
| | - Uttam C. Banerjee
- Department of Pharmaceutical Technology (Biotechnology); National Institute of Pharmaceutical Education and Research (NIPER) S. A. S. Nagar; Mohali India
| | - Raj Kumar
- Laboratory for Drug Design and Synthesis, Department of Pharmaceutical Sciences and Natural Products; Central University of Punjab; Bathinda India
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11
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Metwally NH, Mohamed MS. Pyrazoloquinazoline derivatives: Synthesis, reactions, and biological applications. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1399208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Mona Said Mohamed
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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12
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Feng H, Wang T, Chen S, Huang Y, Yu W, Huang Y, Xiong F. Copper-catalyzed [3 + 2] cycloaddition reactions: synthesis of substituted pyrazolo[1,5-c]quinazolines with N-iminoquinazolinium ylides and olefins as starting materials. RSC Adv 2016. [DOI: 10.1039/c6ra22006a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Pyrazolo[1,5-c]quinazoline derivatives were efficiently synthesized via cycloaddition reaction between N-iminoquinazolinium ylides and olefins in moderate to good yield.
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Affiliation(s)
- Haiyan Feng
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology
- Jiangxi Normal University
- Nanchang
- P. R. China
- College of Chemistry and Chemical Engineering
| | - Tao Wang
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology
- Jiangxi Normal University
- Nanchang
- P. R. China
- College of Chemistry and Chemical Engineering
| | - Songtao Chen
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Yangfei Huang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Weijie Yu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Yuanyuan Huang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Fei Xiong
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology
- Jiangxi Normal University
- Nanchang
- P. R. China
- College of Chemistry and Chemical Engineering
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13
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Li C, Lu WQ, Zhang MM, Wang XS. Formation of Csp2-N bond under metal-catalyst-free conditions for the synthesis of pyridopyrazoloquinazoline derivatives. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1547-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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14
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Imine/amide-imidazole conjugates derived from 5-amino-4-cyano-N1-substituted benzyl imidazole: Microwave-assisted synthesis and anticancer activity via selective topoisomerase-II-α inhibition. Bioorg Med Chem 2015. [PMID: 26216018 DOI: 10.1016/j.bmc.2015.07.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Microwave-accelerated synthesis and anticancer activity of novel imine/amide-imidazole conjugates derived from 5-amino-4-cyano-N1-substituted benzyl imidazole against a panel of seven cancer cell lines are reported for the first time. Compounds ARK-4, 10 and 12 in the series show promising in vitro anti proliferative activity with low micromolar IC50 values against A-459 (lung), Hep-G2 (liver) and H-460 (liver) cancer cell lines. Compounds caused the increase in ROS levels as well as mitochondrial membrane depolarization, which might induce apoptosis. Further, mechanistic interventions on biological and molecular modeling data supported that compounds inhibited topoisomerase-II selectively.
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15
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Chauhan M, Rana A, Alex JM, Negi A, Singh S, Kumar R. Design, microwave-mediated synthesis and biological evaluation of novel 4-aryl(alkyl)amino-3-nitroquinoline and 2,4-diaryl(dialkyl)amino-3-nitroquinolines as anticancer agents. Bioorg Chem 2015; 58:1-10. [DOI: 10.1016/j.bioorg.2014.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/03/2014] [Accepted: 11/06/2014] [Indexed: 11/25/2022]
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16
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Gupta AK, Ahamad S, Gupta E, Kant R, Mohanan K. Substrate-controlled product-selectivity in the reaction of the Bestmann–Ohira reagent with N-unprotected isatin-derived olefins. Org Biomol Chem 2015; 13:9783-8. [DOI: 10.1039/c5ob01382h] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild and efficient reaction of the Bestmann–Ohira reagent withN-unprotected isatin-derived olefins has been developed for the selective synthesis of spiro-phosphonylpyrazoline-oxindoles and phosphonylpyrazoloquinazolinones.
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Affiliation(s)
- Ashis Kumar Gupta
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| | - Shakir Ahamad
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| | - Ekta Gupta
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Ruchir Kant
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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17
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Garg M, Chauhan M, Singh PK, Alex JM, Kumar R. Pyrazoloquinazolines: Synthetic strategies and bioactivities. Eur J Med Chem 2014; 97:444-61. [PMID: 25438709 DOI: 10.1016/j.ejmech.2014.11.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 11/20/2014] [Accepted: 11/25/2014] [Indexed: 12/20/2022]
Abstract
Numerous N-heterocycles are indisputably evidenced to exhibit myriad biological activities. In the recent past, attempts made to condense the various heterocycles have resulted in derivatives possessing better bioactivities. Among many such condensed heterocycles, pyrazoloquinazolines have managed to hold the attention of many researchers, owing to the broad spectrum of activities they portray. This review is the first of its kind to congregate the various pyrazoloquinazolines reported until now and categorizes these structurally isomeric classes into eleven different groups based on the fusion pattern of the ring such as [1,5-c], [5,1-b], [4,3-h], etc. Furthermore, this review is a concerted effort to highlight design, synthetic strategies as well as biological activities of each class of this condensed heterocycle. Structure-activity relationship studies and in silico approaches wherever reported have also been discussed. In addition, manuscript also offers scope for design, synthesis and generation of libraries of unreported classes of pyrazoloquinazolines for the biological evaluation.
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Affiliation(s)
- Mansi Garg
- Laboratory for Drug Design and Synthesis, Centre for Chemical and Pharmaceutical Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda 151 001, India
| | - Monika Chauhan
- Laboratory for Drug Design and Synthesis, Centre for Chemical and Pharmaceutical Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda 151 001, India
| | - Pankaj Kumar Singh
- Laboratory for Drug Design and Synthesis, Centre for Chemical and Pharmaceutical Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda 151 001, India
| | - Jimi Marin Alex
- Laboratory for Drug Design and Synthesis, Centre for Chemical and Pharmaceutical Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda 151 001, India
| | - Raj Kumar
- Laboratory for Drug Design and Synthesis, Centre for Chemical and Pharmaceutical Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda 151 001, India.
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18
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Khan I, Ibrar A, Ahmed W, Saeed A. Synthetic approaches, functionalization and therapeutic potential of quinazoline and quinazolinone skeletons: the advances continue. Eur J Med Chem 2014; 90:124-69. [PMID: 25461317 DOI: 10.1016/j.ejmech.2014.10.084] [Citation(s) in RCA: 255] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/10/2014] [Accepted: 10/31/2014] [Indexed: 12/18/2022]
Abstract
The presence of N-heterocycles as an essential structural motif in a variety of biologically active substances has stimulated the development of new strategies and technologies for their synthesis. Among the various N-heterocyclic scaffolds, quinazolines and quinazolinones form a privileged class of compounds with their diverse spectrum of therapeutic potential. The easy generation of complex molecular diversity through broadly applicable, cost-effective, practical and sustainable synthetic methods in a straightforward fashion along with the importance of these motifs in medicinal chemistry, received significant attention from researchers engaged in drug design and heterocyclic methodology development. In this perspective, the current review article is an effort to recapitulate recent developments in the eco-friendly and green procedures for the construction of highly challenging and potentially bioactive quinazoline and quinazolinone compounds in order to help medicinal chemists in designing and synthesizing novel and potent compounds for the treatment of different disorders. The key mechanistic insights for the synthesis of these heterocycles along with potential applications and manipulations of the products have also been conferred. This article also aims to highlight the promising future directions for the easy access to these frameworks in addition to the identification of more potent and specific products for numerous biological targets.
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Affiliation(s)
- Imtiaz Khan
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - Aliya Ibrar
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Waqas Ahmed
- Office of Research, Innovation and Commercialization, University of Gujrat, Gujrat 50700, Pakistan
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
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Zhang X, Yang L, Wu Y, Du J, Mao Y, Wang X, Luan S, Lei Y, Li X, Sun H, You Q. Microwave-assisted transition-metal-free intramolecular Ullmann-type O-arylation in water for the synthesis of xanthones and azaxanthones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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