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Fandrick DR, Sanyal S, Kaloko J, Mulder JA, Wang Y, Wu L, Lee H, Roschangar F, Hoffmann M, Senanayake CH. A Michael Equilibration Model To Control Site Selectivity in the Condensation toward Aminopyrazoles. Org Lett 2015; 17:2964-7. [DOI: 10.1021/acs.orglett.5b01248] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel R. Fandrick
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Sanjit Sanyal
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Joseph Kaloko
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jason A. Mulder
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Yuwen Wang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Ling Wu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Frank Roschangar
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Matthias Hoffmann
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Strasse 65, Biberach an der Riss 88397, Germany
| | - Chris H. Senanayake
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
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Grošelj U, Pušavec E, Golobič A, Dahmann G, Stanovnik B, Svete J. Synthesis of 1,5-disubstituted-4-oxo-4,5-dihydro-1 H -pyrazolo[4,3- c ]pyridine-7-carboxamides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Khalafy J, Poursattar Marjani A, Salami F. A novel synthesis of new 2-aryl-6-(arylamino)-1H-imidazo[1,2-b]pyrazole-7-carbonitrile derivatives. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
The current review summarizes the known synthetic routes of fused imidazopyrazoles. This review is classified into two main categories based on the type of annulations, for example, annulation of the imidazole ring onto a pyrazole scaffold or annulation of the pyrazole ring onto an imidazole scaffold. Some medicinal applications of imidazopyrazoles are mentioned.
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Mohareb RM, Sherif SM, Zohdi HF. Heterocyclic Synthesis with Enamines: Convenient Syntheses of Polyfunctionally Substituted Pyrazole, Pyridine, Pyrimidine and Pyrazolo[3,4-d]pyrimrdine Derivatives. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199300026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Madkour HMF, Mahmoud MR, Nassar MH, Habashy MM. Behaviour of Some Activated Nitriles Toward Barbituric, Thiobarbituric Acids and 3-Methyl-1-Phenylpyrazol-5-One. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200000128] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Aggarwal R, Kumar V, Kumar R, Singh SP. Approaches towards the synthesis of 5-aminopyrazoles. Beilstein J Org Chem 2011; 7:179-97. [PMID: 21448263 PMCID: PMC3063075 DOI: 10.3762/bjoc.7.25] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Accepted: 12/10/2010] [Indexed: 11/25/2022] Open
Abstract
The biological and medicinal properties of 5-aminopyrazoles have prompted enormous research aimed at developing synthetic routes to these heterocyles. This review focuses on the biological properties associated with this system. Various synthetic methods developed up to 2010 for these compounds are described, particularly those that involve the reactions of β-ketonitriles, malononitrile, alkylidenemalononitriles and their derivatives with hydrazines, as well as some novel miscellaneous methods.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra-136 119, Haryana, India
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M. Riyadh S, A. Abdelhamid I, M. Ibrahim H, M. Al-Matar H, H. Elnagdi M. Chemistry of Hydrazonoalkanenitriles. HETEROCYCLES 2007. [DOI: 10.3987/rev-07-618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Ghorab MM, Ismail ZH, Abdel-Gawad SM, Aziem AA. Antimicrobial activity of amino acid, imidazole, and sulfonamide derivatives of pyrazolo[3,4-d]pyrimidine. HETEROATOM CHEMISTRY 2004. [DOI: 10.1002/hc.10212] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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El-Taweel FMAA, Mashaly MAH, Elagamey AGA. Activated nitriles in heterocyclic synthesis: Syntheses of thiazole, pyrazole and 4H-1,4-benzothiazine derivatives. Arch Pharm Res 1990. [DOI: 10.1007/bf02856532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Elagamey AGA, Sowellim SZA, Khodeir MN. Reactions with heterocyclic amidines (V). Synthesis of some new imidazo[1,2-b] pyrazole, pyrazolo [5,1-c]-1,2,4-triazine and pyrazolo [5,1-c]-1,2,4-triazole derivatives. Arch Pharm Res 1987. [DOI: 10.1007/bf02855615] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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El-Shahat Kandeel Z, Hassan KM, Ismail NA, Elnagdi MH. Activated nitriles in heterocyclic synthesis: Novel Synthesis of Pyrimidine and of Pyridine Derivatives. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/prac.19843260208] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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The Chemistry of Pyrazolopyridines. ADVANCES IN HETEROCYCLIC CHEMISTRY 1984. [DOI: 10.1016/s0065-2725(08)60117-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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