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A review of synthetic methods of 1,2,4-triazolopyridines and their therapeutic properties. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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2
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Erickson GA, Hatcher MA, Journet M, Kowalski JA, Lovelace TC, Pink CJ, Xie S. Preparation of Methyltriazolo[1,4]benzodiazepine via Oxidative Activation of a Thiolactam for the Synthesis of BET Inhibitor Molibresib. J Org Chem 2021; 87:1961-1970. [PMID: 33876939 DOI: 10.1021/acs.joc.1c00563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A novel oxidative activation of a thiolactam was developed for the preparation of methyltriazolo[1,4]benzodiazepine in a single step. A sulfenic acid (R-SOH) was proposed as the activated intermediate with the concurrent formation of acetylhydrazone from acethydrazide and cyclocondensation to the triazole. A version of the method with 35% peracetic acid was scaled up to 40 kg as a part of the new route for the synthesis of BET inhibitor molibresib (GSK525762). The thiolactam was prepared from commercially available (2-amino-5-methoxyphenyl)(4-chlorophenyl)methanone in two steps in 66% yield. The concise four-step synthesis delivered 52 kg of molibresib of >99.9% ee in an overall 41% yield from the ketone. The condition for the methyltriazole was mild and free of racemization of the sensitive stereocenter. The oxidative method, with several advantages to the known methods, should be applicable to the synthesis of alkyltriazoles from other thiolactams and acylhydrazines.
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Affiliation(s)
- Greg A Erickson
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Mark A Hatcher
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Michel Journet
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - John A Kowalski
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Tom C Lovelace
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Christopher J Pink
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Shiping Xie
- Product Development and Supply, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
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Keerthy HK, Mohan S, Basappa, Bharathkumar H, Rangappa S, Svensson F, Bender A, Mohan CD, Rangappa KS, Bhatnagar R. Triazole-Pyridine Dicarbonitrile Targets Phosphodiesterase 4 to Induce Cytotoxicity in Lung Carcinoma Cells. Chem Biodivers 2019; 16:e1900234. [PMID: 31287204 DOI: 10.1002/cbdv.201900234] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 07/09/2019] [Indexed: 12/24/2022]
Abstract
Phosphodiesterase 4 (PDE4) is a key enzyme involved in the hydrolysis of cyclic adenosine monophosphate (cAMP) and widely expressed in several types of cancers. The inhibition of PDE4 results in an increased concentration of intracellular cAMP levels that imparts the anti-inflammatory response in the target cells. In the present report, two series of triazolo-pyridine dicarbonitriles and substituted dihydropyridine dicarbonitriles were synthesized using green protocol (TBAB in refluxed water). We next evaluated the title compounds for their cytotoxicity towards lung cancer (A549) cells and identified 7'-[4-(methylsulfonyl)phenyl]-5'-oxo-1',5'-dihydrospiro[cyclohexane-1,2'-[1,2,4]triazolo[1,5-a]pyridine]-6',8'-dicarbonitrile (5h) and 7'-(1-methyl-1H-imidazol-2-yl)-5'-oxo-1',5'-dihydrospiro[cyclohexane-1,2'-[1,2,4]triazolo[1,5-a]pyridine]-6',8'-dicarbonitrile (5j) as lead analogs with the IC50 values of 15.2 and 24.1 μm, respectively. Furthermore, all the new compounds were tested for PDE4 inhibitory activity and 5j showed relatively good inhibitory activity towards PDE4 with inhibition of 50.9 % at 10 μm. In silico analysis demonstrated the favorable interaction of the title compounds with the target enzyme. Taken together, the present study introduces a new scaffold for the development of novel PDE4 inhibitors to fight against inflammatory diseases.
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Affiliation(s)
- Hosadurga K Keerthy
- Department of Chemistry, Center for Post Graduate Studies and Research, St. Agnes College, Bendur, Mangalore, 575002, India.,Center for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, United Kingdom
| | - Surender Mohan
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Basappa
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College campus, Palace Road, Bangalore, 560001, India.,Laboratory of Chemical Biology, Department of Studies in Organic Chemistry, University of Mysore, Manasagangotri, Mysore, 570006, India
| | - Hanumantharayappa Bharathkumar
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College campus, Palace Road, Bangalore, 560001, India
| | - Shobith Rangappa
- Adichunchanagiri Institute for Molecular Medicine, BG Nagara, 571448, Nagamangala Taluk, Mandya District, India
| | - Fredrick Svensson
- Center for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, United Kingdom
| | - Andreas Bender
- Center for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, United Kingdom
| | | | | | - Rakesh Bhatnagar
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India
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Liu Y, Ren J, Jin GY. Synthesis of Pyrazolotriazolopyrimidine Tri-Fused Heterocyclic Compounds. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823404323000774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This paper uses basic-catalysed method to convert 1 H-pyrazole-4-carboxamides into tri-fused heterocyclic systems containing two kinds of pyrazolotriazolopyrimidine framework. The synthesis of compounds 5–6 and reactions of them with some electrophiles have been investigated. Preliminary bioassay study showed that some compounds displayed high activity.
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Affiliation(s)
- Ying Liu
- Institute of Elemento-organic Chemistry, State Kay Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, P.R. China
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Physical Chemistry & College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China
| | - Jun Ren
- Institute of Elemento-organic Chemistry, State Kay Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, P.R. China
| | - Gui-Yu Jin
- Institute of Elemento-organic Chemistry, State Kay Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, P.R. China
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Dunetz JR, Magano J, Weisenburger GA. Large-Scale Applications of Amide Coupling Reagents for the Synthesis of Pharmaceuticals. Org Process Res Dev 2016. [DOI: 10.1021/op500305s] [Citation(s) in RCA: 411] [Impact Index Per Article: 51.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Joshua R. Dunetz
- Process
Chemistry, Gilead Sciences, 333 Lakeside Drive, Foster City, California 94404, United States
| | - Javier Magano
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Gerald A. Weisenburger
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
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Yang MY, Zhai ZW, Sun ZH, Yu SJ, Liu XH, Weng JQ, Tan CX, Zhao WG. A Facile One-Pot Synthesis of Novel 1,2,4-Triazolo[4,3-a]Pyridine Derivatives Containing the Trifluoromethyl Moiety Using Microwave Irradiation. JOURNAL OF CHEMICAL RESEARCH 2015. [DOI: 10.3184/174751915x14400874295745] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of novel substituted 8-chloro-6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridines are synthesised from 2,3-dichloro-5-(trifluoromethyl)pyridine, hydrazine hydrate as starting materials by multi-step reactions under microwave irradiation. Their chemical structures can be characterised by 1H NMR, MS and elemental analysis. The title compounds exhibit weak antifungal activity.
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Affiliation(s)
- Ming-Yan Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Zhi-Wen Zhai
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Zhao-Hui Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Shu-Jing Yu
- Collaborative Innovation Center of Chemical Science and Engineering, State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, Nankai University, Tianjin 300071, P.R. China
| | - Xing-Hai Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Jian-Quan Weng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Cheng-Xia Tan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Wei-Guang Zhao
- Collaborative Innovation Center of Chemical Science and Engineering, State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, Nankai University, Tianjin 300071, P.R. China
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Liu XH, Xu XY, Tan CX, Weng JQ, Xin JH, Chen J. Synthesis, crystal structure, herbicidal activities and 3D-QSAR study of some novel 1,2,4-triazolo[4,3-a]pyridine derivatives. PEST MANAGEMENT SCIENCE 2015; 71:292-301. [PMID: 24753294 DOI: 10.1002/ps.3804] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 12/26/2013] [Accepted: 04/15/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND 1,2,4-Triazolo[4,3-a]pyridine derivatives represent a new series of compounds that possess good herbicidal activity against Echinochloa crusgalli (L.) Beauv., Setaria faberii, Digitaria sanguinalis (L.) Scop., Brassica juncea Coss., Amaranthus retroflexus L. and Eclipta prostrata L. RESULTS A total of 23 novel 1,2,4-triazolo[4,3-a]pyridine derivatives were synthesised and identified by (1) H NMR, IR, single-crystal X-ray diffraction, mass-spectroscopic and elemental analysis, and their herbicidal activities were tested against E. crusgalli (L.) Beauv., S. faberii, D. sanguinalis (L.) Scop., B. juncea Coss., A. retroflexus L. and E. prostrata L. at 150 g a.i. ha(-1) . It was found that the title compound 8-chloro-3-(4-propylphenyl)-[1,2,4]-triazolo[4,3-a]pyridine possesses high herbicidal activity and a broad spectrum against the 22 test weeds, with an inhibition effect of about 50% at a dosage of 37.5 g a.i. ha(-1) , and is safe for corn, cotton and rice at a dosage of 150 g a.i. ha(-1) . Furthermore, comparative molecular field analysis contour models were established to study the structure-activity relationship of the title compounds. CONCLUSION It is possible that, with further structure modification, 1,2,4-triazolo[4,3-a]pyridine derivatives, which possess good herbicidal activities, may become novel lead compounds for the development of herbicides against dicotyledonous weeds.
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Affiliation(s)
- Xing-Hai Liu
- College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou, China
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Liu X, Sun Z, Yang M, Tan C, Weng J, Zhang Y, Ma Y. Microwave Assistant One Pot Synthesis, Crystal Structure, Antifungal Activities and 3D‐
QSAR
of Novel 1,2,4‐Triazolo[4,3‐
a
]pyridines. Chem Biol Drug Des 2014; 84:342-7. [DOI: 10.1111/cbdd.12323] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 02/25/2014] [Accepted: 03/04/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Xing‐Hai Liu
- College of Chemical Engineering and Materials Science Zhejiang University of Technology Hangzhou 310014 China
| | - Zhao‐Hui Sun
- College of Chemical Engineering and Materials Science Zhejiang University of Technology Hangzhou 310014 China
| | - Ming‐Yan Yang
- College of Chemical Engineering and Materials Science Zhejiang University of Technology Hangzhou 310014 China
| | - Cheng‐Xia Tan
- College of Chemical Engineering and Materials Science Zhejiang University of Technology Hangzhou 310014 China
| | - Jian‐Quan Weng
- College of Chemical Engineering and Materials Science Zhejiang University of Technology Hangzhou 310014 China
| | - Yong‐Gang Zhang
- Biology Institute of Shandong Academy of Science Jinan 250014 China
| | - Yi Ma
- State‐Key Laboratory of Elemento‐Organic Chemistry National Pesticidal Engineering Centre (Tianjin) Nankai University Tianjin 300071 China
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Cao ZP, Quan B, Dong HS. Synthesis of (3,5-Aryl/methyl-1H-Pyrazol-1-yl)-(5-Arylamino-2H-1,2,3-Triazol-4-yl)Methanone. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200800114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
This note describes a rapid and mild strategy for the loading of alcohols and anilines onto a polystyrene triphenylmethyl (trityl) resin. High loadings were obtained in a matter of minutes by treating resin-bound trityl chloride with triethyloxonium tetrafluoroborate followed by alcohols or anilines. Yields were comparable or better than known literature methods. Recycling of the recovered resin was also possible using the developed method.
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Affiliation(s)
- Itedale Namro Redwan
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden
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Magano J, Dunetz JR. Large-Scale Carbonyl Reductions in the Pharmaceutical Industry. Org Process Res Dev 2012. [DOI: 10.1021/op2003826] [Citation(s) in RCA: 292] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Javier Magano
- Chemical Research and Development, Pharmaceutical Sciences, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Joshua R. Dunetz
- Chemical Research and Development, Pharmaceutical Sciences, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
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Press NJ, Banner KH. PDE4 inhibitors - a review of the current field. PROGRESS IN MEDICINAL CHEMISTRY 2009; 47:37-74. [PMID: 19328289 DOI: 10.1016/s0079-6468(08)00202-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Neil J Press
- Novartis Institutes for Biomedical Research, Horsham, West Sussex RH12 5AB, UK
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Duplantier AJ, Bachert EL, Cheng JB, Cohan VL, Jenkinson TH, Kraus KG, McKechney MW, Pillar JD, Watson JW. SAR of a series of 5,6-dihydro-(9H)-pyrazolo[3,4-c]-1,2,4-triazolo[4,3-alpha]pyridines as potent inhibitors of human eosinophil phosphodiesterase. J Med Chem 2007; 50:344-9. [PMID: 17228876 DOI: 10.1021/jm060904g] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The potency and physical properties of a previously reported 7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine series of human eosinophil phosphodiesterase inhibitors were improved by tying the lactam moiety into a triazolo ring. The resulting 5,6-dihydro-(9H)-pyrazolo[3,4-c]-1,2,4-triazolo[4,3-alpha]pyridine series provided nonionizable analogs with melting point properties suitable for micronization. Substitution at the 3-position of the 5,6-dihydro-(9H)-pyrazolo[3,4-c]-1,2,4-triazolo[4,3-alpha]pyridine tricycle led to a 2-thienyl analog, 19 (tofimilast), a potent PDE4 inhibitor with low oral bioavailability and no emesis-associated behaviors in ferrets at plasma concentrations up to 152 ng/mL.
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Ng Di Marco C, Kuduk SD. Synthesis of Fused [5,5]‐1,2,4‐Triazoles via Tandem Thioimidate Cyclopropane Rearrangement–Cyclization. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910600941414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Christina Ng Di Marco
- a Department of Medicinal Chemistry , Merck Research Laboratories , West Point, Pennsylvania, USA
| | - Scott D. Kuduk
- a Department of Medicinal Chemistry , Merck Research Laboratories , West Point, Pennsylvania, USA
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Caron S, Dugger RW, Ruggeri SG, Ragan JA, Ripin DHB. Large-Scale Oxidations in the Pharmaceutical Industry. Chem Rev 2006; 106:2943-89. [PMID: 16836305 DOI: 10.1021/cr040679f] [Citation(s) in RCA: 542] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stéphane Caron
- Chemical Research and Development, Pfizer Global Research Division, Pfizer Inc., Eastern Point Road, Groton, Connecticut 06340, USA
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Burkhardt ER, Matos K. Boron Reagents in Process Chemistry: Excellent Tools for Selective Reductions. Chem Rev 2006; 106:2617-50. [PMID: 16836295 DOI: 10.1021/cr0406918] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Diethoxyphosphinyl acetic acid hydrazide: a uniquely versatile reagent for the preparation of fused [5,5]-, [5,6]-, and [5,7]-3-[(E)-2-(arylvinyl)]-1,2,4-triazoles. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.01.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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