1
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Begunov RS, Sokolov AA. Biological Activity of Condensed Pyridine Derivatives with a Bridgehead Nitrogen Atom. Pharm Chem J 2023. [DOI: 10.1007/s11094-023-02827-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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2
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Ma J, Tan Y, Tang Y, Cui X, Xu J, Li Y, Wang X. Base‐Promoted Cascade C–N and C–C Formation: An Approach to Pyrido[1,2‐a]pyrimidinones from Ynones and 2‐Methylpyrimidin‐4‐ols. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jianting Ma
- Hainan Medical University School of Pharmacy CHINA
| | - Yinfeng Tan
- Hainan Medical University School of Pharmacy CHINA
| | - Yao Tang
- Hainan Medical University School of Pharmacy CHINA
| | - Xue Cui
- Hainan Medical University School of Pharmacy CHINA
| | - Junyu Xu
- Hainan Medical University School of Pharmacy CHINA
| | - Youbin Li
- Hainan Medical University School of Pharmacy CHINA
| | - Xuesong Wang
- Hainan Medical University school of pharmacy Xueyuan Road 571199 Haikou CHINA
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3
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A research on structural vibrational, surface characterization of 2-methyl-3-{5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl}-4H-pyrido[1,2-a]pyrimidin-4-one hydrate: SCXRD, FT-IR, MEP, Hirshfeld and molecular docking studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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DHFR Inhibitors: Reading the Past for Discovering Novel Anticancer Agents. Molecules 2019; 24:molecules24061140. [PMID: 30909399 PMCID: PMC6471984 DOI: 10.3390/molecules24061140] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/18/2019] [Accepted: 03/20/2019] [Indexed: 11/17/2022] Open
Abstract
Dihydrofolate reductase inhibitors are an important class of drugs, as evidenced by their use as antibacterial, antimalarial, antifungal, and anticancer agents. Progress in understanding the biochemical basis of mechanisms responsible for enzyme selectivity and antiproliferative effects has renewed the interest in antifolates for cancer chemotherapy and prompted the medicinal chemistry community to develop novel and selective human DHFR inhibitors, thus leading to a new generation of DHFR inhibitors. This work summarizes the mechanism of action, chemical, and anticancer profile of the DHFR inhibitors discovered in the last six years. New strategies in DHFR drug discovery are also provided, in order to thoroughly delineate the current landscape for medicinal chemists interested in furthering this study in the anticancer field.
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5
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Hosseini H, Bayat M. An efficient synthesis of new imidazo[1,2-a]pyridine-6-carbohydrazide and pyrido[1,2-a]pyrimidine-7-carbohydrazide derivatives via a five-component cascade reaction. RSC Adv 2019; 9:7218-7227. [PMID: 35519992 PMCID: PMC9061117 DOI: 10.1039/c9ra00350a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/26/2019] [Indexed: 11/30/2022] Open
Abstract
A highly efficient and straightforward synthesis of N-fused heterocyclic compounds including N′-(1-(4-nitrophenyl)ethylidene)imidazo[1,2-a]pyridine-6-carbohydrazide and N′-(1-(4-nitrophenyl)ethylidene)pyrido[1,2-a]pyrimidine-7-carbohydrazide derivatives is successfully achieved via a five-component cascade reaction utilizing cyanoacetohydrazide, 4-nitroacetophenone, 1,1-bis(methylthio)-2-nitroethylene and various diamines in a mixture of water and ethanol. The new efficient domino protocol involving a sequence of N,N-acetal formation, Knoevenagel condensation, Michael reaction, imine–enamine tautomerization and N-cyclization as key steps. The merit of this catalyst free approach is highlighted by its easily available starting materials, operational simplicity, clean reaction profile, the use of environmentally benign solvents and tolerance of a wide variety of functional groups. An easy synthesis of novel and highly substituted imidazo[1,2-a]pyridines and pyrido[1,2-a]pyrimidines using heterocyclic ketene aminals.![]()
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Affiliation(s)
- Hajar Hosseini
- Department of Chemistry
- Faculty of Science
- Imam Khomeini International University
- Qazvin
- Iran
| | - Mohammad Bayat
- Department of Chemistry
- Faculty of Science
- Imam Khomeini International University
- Qazvin
- Iran
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6
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Rezvanian A, Alinaghian F, Heravi MM. Metal-Free Assemblage of Four C−N and Two C−C Bonds via a Cascade Five Component Diastereoselective Synthesis of Pyrido[1,2- a
]Pyrimidines. ChemistrySelect 2018. [DOI: 10.1002/slct.201802481] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Atieh Rezvanian
- Physics and Chemistry Faculty; Alzahra University, Tehran; Iran
| | | | - Majid M. Heravi
- Physics and Chemistry Faculty; Alzahra University, Tehran; Iran
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7
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Sadeghzadeh SM, Zhiani R. Synthesis of pyridopyrimidinones by N-heterocyclic carbene palladium(II) supported on KCC-1 in aqueous solution. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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8
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Tatsumi K, Fujihara T, Terao J, Tsuji Y. Copper-Catalyzed [4+2] Cycloaddition Using N
-(2-Pyridyl)ketimines and Terminal Alkynes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kenta Tatsumi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering; Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
| | - Tetsuaki Fujihara
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering; Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
| | - Jun Terao
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering; Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
- Present address: Department of Basic Science, Graduate School of Arts and Sciences; The University of Tokyo; Tokyo 153-8902 Japan
| | - Yasushi Tsuji
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering; Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
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9
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Zhang R, Tong F, Yang L, Adsetts JR, Yan T, Wang R, Ding Z, Wang HB. Facile synthesis and efficient electrochemiluminescence of a readily accessible pyridopyrimidine. Chem Commun (Camb) 2018; 54:9897-9900. [DOI: 10.1039/c8cc05490h] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Through a facile one-pot three-component reaction and a subsequent acetylation strategy, a novel greenish-blue fluorescent 4-imino-4H-pyrido[1,2-a]pyrimidine-3-carbonitrile (IPPC) was synthesized.
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Affiliation(s)
- Ruizhong Zhang
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- School of Chemical and Environmental Engineering
- Jianghan University
- Wuhan
- China
| | - Feng Tong
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- School of Chemical and Environmental Engineering
- Jianghan University
- Wuhan
- China
| | - Liuqing Yang
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
| | | | - Tianhao Yan
- Department of Chemistry
- Xi'an Jiaotong-Liverpool University
- Suzhou
- China
| | - Ruiyao Wang
- Department of Chemistry
- Xi'an Jiaotong-Liverpool University
- Suzhou
- China
| | - Zhifeng Ding
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
| | - Hong-Bo Wang
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- School of Chemical and Environmental Engineering
- Jianghan University
- Wuhan
- China
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10
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Alsharif Z, Ali MA, Alkhattabi H, Jones D, Delancey E, Ravikumar PC, Alam MA. Hexafluoroisopropanol mediated benign synthesis of 2H-pyrido[1,2-a]pyrimidin-2-ones by using a domino protocol. NEW J CHEM 2017; 41:14862-14870. [PMID: 29430169 DOI: 10.1039/c7nj03376a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Domino strategy has been used for the synthesis of 2H-pyrido[1,2-a]pyrimidin-2-ones. Four sequential reactions: aza-Michael addition, water elimination, intramolecular acyl substitution, and [1,3]-H shift were observed in this domino protocol. Hexafluoroisopropanol is used as a promotor and recyclable solvent in this cascade process. Availability of inexpensive 2-aminopyridines and wide variety of Michael acceptors such as commercially available acrylates and unactivated Baylis-Hillman adducts makes this methodology a huge reservoir of novel fused N-heterocycles as bioactive and potential therapeutic agents. The reaction mechanism has been proposed and rationalized by density functional theory calculation. Products are obtained up to 95% yield.
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Affiliation(s)
- Zakeyah Alsharif
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, AR 72467
| | - Mohamad Akbar Ali
- Department of Chemistry, Sejong University, Seoul, 143-747, Republic of Korea
| | - Hessa Alkhattabi
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, AR 72467
| | - Derika Jones
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, AR 72467
| | - Evan Delancey
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, AR 72467
| | - P C Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER)† Bhubaneswar, Jatni Campus, Dt: Khurda, Odisha 752050, India
| | - Mohammad A Alam
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, AR 72467
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11
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Satham L, Namboothiri INN. Regio- and Diastereoselective Synthesis of Dihydropyridopyrimidines via Cascade Reactions of 2-Aminopyridines with Morita–Baylis–Hillman Bromides of Nitroalkenes. J Org Chem 2017; 82:6482-6488. [DOI: 10.1021/acs.joc.7b00947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Verma AK, Bishnoi A, Fatma S, Parveen H, Singh V. An Easy Synthetic Access to Spiro Derivatives Containing Pyrido[1,2-a]pyrimidine and Quinoline Scaffolds and Their Antimicrobial Activity. ChemistrySelect 2017. [DOI: 10.1002/slct.201700228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anil Kumar Verma
- Department of Chemistry; University of Lucknow; Lucknow 226007 India
| | - Abha Bishnoi
- Department of Chemistry; University of Lucknow; Lucknow 226007 India
| | - Shaheen Fatma
- Department of Chemistry; University of Lucknow; Lucknow 226007 India
| | - Huda Parveen
- Department of Chemistry; University of Lucknow; Lucknow 226007 India
| | - Vineeta Singh
- Microbiology Division; CSIR-CDRI; Lucknow 226031 India
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13
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Mamaghani M, Hossein Nia R. Recent Developments in the MCRs Synthesis of Pyridopyrimidines and Spiro‐Pyridopyrimidines. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2783] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Manouchehr Mamaghani
- Department of Chemistry, Faculty of SciencesUniversity of Guilan P.O. Box 41335‐1914 Rasht Iran
| | - Roghayeh Hossein Nia
- Department of Chemistry, Faculty of SciencesUniversity of Guilan P.O. Box 41335‐1914 Rasht Iran
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14
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Alanine TA, Galloway WRJD, Bartlett S, Ciardiello JJ, McGuire TM, Spring DR. Concise synthesis of rare pyrido[1,2-a]pyrimidin-2-ones and related nitrogen-rich bicyclic scaffolds with a ring-junction nitrogen. Org Biomol Chem 2016; 14:1031-8. [PMID: 26632452 DOI: 10.1039/c5ob01784j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Pyrido[1,2-a]pyrimidin-2-ones represent a pharmaceutically interesting class of heterocycles. The structurally related pyrido[1,2-a]pyrimidin-4-ones are associated with a broad range of useful biological properties. Furthermore, quinolizinone-type scaffolds of these sorts with a bridgehead nitrogen are expected to display interesting physico-chemical properties. However, pyrido[1,2-a]pyrimidin-2-ones are largely under-represented in current small molecule screening libraries and the physical and biological properties of the pyrido[1,2-a]pyrimidin-2-one scaffold have been poorly explored (indeed, the same can be said for unsaturated bicyclic compounds with a bridgehead nitrogen in general). Herein, we report the development of a new strategy for the concise synthesis of substituted pyrido[1,2-a]pyrimidin-2-ones from readily available starting materials. The synthetic route involved the acylation of the lithium amide bases of 2-aminopyridines with alkynoate esters to form alkynamides, which were then cyclised under thermal conditions. The use of lithium amide anions ensured excellent regioselectivity for the 2-oxo-isomer over the undesired 4-oxo-isomer, which offers a distinct advantage over some existing methods for the synthesis of pyrido[1,2-a]pyrimidin-2-ones. Notably, different aminoazines could also be employed in this approach, which enabled access to several very unusual bicyclic systems with higher nitrogen contents. This methodology thus represents an important contribution towards the synthesis of pyrido[1,2-a]pyrimidin-2-ones and other rare azabicycles with a ring-junction nitrogen. These heterocycles represent attractive structural templates for drug discovery.
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Affiliation(s)
- T A Alanine
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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15
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Ganji RJ, Reddi R, Gumpena R, Marapaka AK, Arya T, Sankoju P, Bhukya S, Addlagatta A. Structural basis for the inhibition of M1 family aminopeptidases by the natural product actinonin: Crystal structure in complex with E. coli aminopeptidase N. Protein Sci 2015; 24:823-31. [PMID: 25644575 DOI: 10.1002/pro.2653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 01/24/2015] [Accepted: 01/26/2015] [Indexed: 02/05/2023]
Abstract
Actinonin is a pseudotripeptide that displays a high affinity towards metalloproteases including peptide deformylases (PDFs) and M1 family aminopeptidases. PDF and M1 family aminopeptidases belong to thermolysin-metzincin superfamily. One of the major differences in terms of substrate binding pockets between these families is presence (in M1 aminopeptidases) or absence (in PDFs) of an S1 substrate pocket. The binding mode of actinonin to PDFs has been established previously; however, it is not clear how the actinonin, without a P1 residue, would bind to the M1 aminopeptidases. Here we describe the crystal structure of Escherichia coli aminopeptidase N (ePepN), a model protein of the M1 family aminopeptidases in complex with actinonin. For comparison we have also determined the structure of ePepN in complex with a well-known tetrapeptide inhibitor, amastatin. From the comparison of the actinonin and amastatin ePepN complexes, it is clear that the P1 residue is not critical as long as strong metal chelating head groups, like hydroxamic acid or α-hydroxy ketone, are present. Results from this study will be useful for the design of selective and efficient hydroxamate inhibitors against M1 family aminopeptidases.
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Affiliation(s)
- Roopa Jones Ganji
- Center for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, Telangana, India
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16
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Yang K, Xiang J, Bao G, Dang Q, Bai X. Synthesis of highly substituted 4H-pyrido[1,2-a]pyrimidines via a one-pot three-component condensation reaction. ACS COMBINATORIAL SCIENCE 2013; 15:519-24. [PMID: 23914724 DOI: 10.1021/co400086u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot three-component reaction, involving condensation of 2-aminopyridines, aldehydes, and ketones/aldehydes under trifluoromethanesulfonic acid catalysis, provides rapid access to highly substituted novel 4H-pyrido[1,2-a]pyrimidines.
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Affiliation(s)
- Kai Yang
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Jinbao Xiang
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Guochen Bao
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Qun Dang
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Xu Bai
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
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