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Kapuriya NP, Bhalodia JJ, Ambasana MA, Patel RB, Bapodra AH. Organocatalyzed Kabbe condensation reaction for mild and expeditious synthesis of 2,2‐dialkyl and 2‐spiro‐4‐chromanones. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Naval P. Kapuriya
- Department of Chemistry and Forensic ScienceBhakta Kavi Narsinh Mehta University Jungadh India
| | - Jasmin J. Bhalodia
- Department of Chemistry and Forensic ScienceBhakta Kavi Narsinh Mehta University Jungadh India
| | - Mrunal A. Ambasana
- Department of Chemistry and Forensic ScienceBhakta Kavi Narsinh Mehta University Jungadh India
| | - Rashmi B. Patel
- Department of Chemistry and Forensic ScienceBhakta Kavi Narsinh Mehta University Jungadh India
| | - Atul H. Bapodra
- Department of Chemistry and Forensic ScienceBhakta Kavi Narsinh Mehta University Jungadh India
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2
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Jijy E, Prakash P, Shimi M, Pihko PM, Joseph N, Radhakrishnan KV. Rhodium catalyzed oxidative coupling of salicylaldehydes with diazabicyclic olefins: a one pot strategy involving aldehyde C-H cleavage and π-allyl chemistry towards the synthesis of fused ring chromanones. Chem Commun (Camb) 2014; 49:7349-51. [PMID: 23846351 DOI: 10.1039/c3cc43485k] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An efficient one pot strategy for the synthesis of cyclopentene fused chromanone derivatives through the direct oxidative coupling of salicylaldehydes with bicyclic olefins in the presence of a rhodium-copper catalyst system is described. This is the first report on the ring opening-ring closing of bicyclic hydrazines via metal catalyzed oxidative coupling reaction.
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Affiliation(s)
- E Jijy
- Organic Chemistry Section, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695 019, India
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3
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Pan YW, Guo CW, Tu HY, Tsai CW, Cheng WC. Solid-phase synthesis of diverse spiroisoxazolinodiketopiperazines. ACS COMBINATORIAL SCIENCE 2013; 15:425-34. [PMID: 23889462 DOI: 10.1021/co4000248] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A convenient, efficient protocol to prepare diverse spiroisoxazolino-diketopiperazines via a parallel solid-supported synthesis was developed. The key steps are (1) a coupling reaction of an amino acid; (2) tosylation with concomitant β-elimination to form an α, β-unsaturated ester; (3) a 1,3-dipolar cycloaddition with an oxime to form isoxazoline rings; and (4) cyclic cleavage to release the product from the resin. All reaction steps and workup procedures were modified to allow the use of automated or semiautomated equipment. A 100-member demonstration library with two diversity sites was prepared in good purity and acceptable overall yields.
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Affiliation(s)
- Yi-Wen Pan
- The Genomics Research Center, Academia Sinica, No. 128, Academia Road Sec. 2, Nankang District, Taipei, 11529, Taiwan
| | - Chih-Wei Guo
- The Genomics Research Center, Academia Sinica, No. 128, Academia Road Sec. 2, Nankang District, Taipei, 11529, Taiwan
| | - Huang-Yao Tu
- The Genomics Research Center, Academia Sinica, No. 128, Academia Road Sec. 2, Nankang District, Taipei, 11529, Taiwan
| | - Chih-Wei Tsai
- The Genomics Research Center, Academia Sinica, No. 128, Academia Road Sec. 2, Nankang District, Taipei, 11529, Taiwan
| | - Wei-Chieh Cheng
- The Genomics Research Center, Academia Sinica, No. 128, Academia Road Sec. 2, Nankang District, Taipei, 11529, Taiwan
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4
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Dubrovskiy AV, Jain P, Shi F, Lushington GH, Santini C, Porubusky P, Larock RC. Solution-phase synthesis of a diverse library of benzisoxazoles utilizing the [3 + 2] cycloaddition of in situ-generated nitrile oxides and arynes. ACS COMBINATORIAL SCIENCE 2013; 15:193-201. [PMID: 23472819 PMCID: PMC3622131 DOI: 10.1021/co300159g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A library of benzisoxazoles has been synthesized by the [3 + 2] cycloaddition of nitrile oxides with arynes and further diversified by acylation/sulfonylation and palladium-catalyzed coupling processes. The eight key intermediate benzisoxazoles have been prepared by the reaction of o-(trimethylsilyl)aryl triflates and chlorooximes in the presence of CsF in good to excellent yields under mild reaction conditions. These building blocks have been used as the key components of a diverse set of 3,5,6-trisubstituted benzisoxazoles.
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Affiliation(s)
| | - Prashi Jain
- University of Kansas NIH Center of Excellence in Chemical Methodologies and Library Development, Lawrence, Kansas 66047
| | - Feng Shi
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - Gerald H. Lushington
- University of Kansas NIH Center of Excellence in Chemical Methodologies and Library Development, Lawrence, Kansas 66047
| | - Conrad Santini
- University of Kansas NIH Center of Excellence in Chemical Methodologies and Library Development, Lawrence, Kansas 66047
| | - Patrick Porubusky
- University of Kansas NIH Center of Excellence in Chemical Methodologies and Library Development, Lawrence, Kansas 66047
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5
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Liu TL, He ZL, Wang CJ. Highly efficient construction of spirocyclic chromanone–pyrrolidines via Cu(i)/TF–BiphamPhos-catalyzed asymmetric 1,3-dipolar cycloaddition. Chem Commun (Camb) 2011; 47:9600-2. [DOI: 10.1039/c1cc13554f] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Cristina Bellucci M, Marcelli T, Scaglioni L, Volonterio A. Synthesis of diverse spiroisoxazolidinohydantoins by totally regio- and diasteroselective 1,3-dipolar cycloadditions. RSC Adv 2011. [DOI: 10.1039/c1ra00573a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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7
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Butler JD, Conrad WE, Lodewyk MW, Fettinger JC, Tantillo DJ, Kurth MJ. Synthesis of substituted chromanones: an organocatalytic aldol/oxa-Michael reaction. Org Lett 2010; 12:3410-3. [PMID: 20617821 DOI: 10.1021/ol101221c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A diastereoselective organocatalytic aldol/oxa-Michael reaction has been developed to efficiently deliver medicinally relevant 2,3-ring-substituted chromanones. Development of this synthetic strategy revealed an unexpected kinetic anti-Saytzeff elimination; an origin for the observed selectivity is suggested on the basis of the results of quantum chemical calculations. This unusual kinetic selectivity necessitated an isomerization protocol that in turn led to the discovery of an intriguing Pd-mediated isomerization/intramolecular Friedel-Crafts-type alkylation.
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Affiliation(s)
- Jeffrey D Butler
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA
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8
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Meng L, Lorsbach BA, Sparks TC, Fettinger JC, Kurth MJ. Parallel Synthesis of Bis-heterocyclic Isoxazolylmethyl- and Isoxazolinylmethylpyrazoles. ACTA ACUST UNITED AC 2009; 12:129-36. [DOI: 10.1021/cc900133k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Liping Meng
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Dow AgroSciences, Discovery R&D, 9330 Zionsville Road, Indianapolis, Indiana 46268
| | - Beth A. Lorsbach
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Dow AgroSciences, Discovery R&D, 9330 Zionsville Road, Indianapolis, Indiana 46268
| | - Thomas C. Sparks
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Dow AgroSciences, Discovery R&D, 9330 Zionsville Road, Indianapolis, Indiana 46268
| | - James C. Fettinger
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Dow AgroSciences, Discovery R&D, 9330 Zionsville Road, Indianapolis, Indiana 46268
| | - Mark J. Kurth
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Dow AgroSciences, Discovery R&D, 9330 Zionsville Road, Indianapolis, Indiana 46268
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Solinas R, DiCesare JC, Baures PW. Parallel synthesis of an imidazole-4,5-dicarboxamide library bearing amino acid esters and alkanamines. Molecules 2008; 13:3149-70. [PMID: 19078856 PMCID: PMC2651155 DOI: 10.3390/molecules13123149] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Revised: 12/11/2008] [Accepted: 12/12/2008] [Indexed: 01/09/2023] Open
Abstract
The imidazole-4,5-dicarboxylic acid scaffold is readily derivatized with amino acid esters and alkanamines to afford compounds with intramolecularly hydrogen bonded conformations that mimic substituted purines and therefore are hypothesized to be potential inhibitors of kinases through competitive binding to the ATP site. In this work, a total of 126 dissymmetrically disubstituted imidazole-4,5-dicarboxamides with amino acid ester and alkanamide substituents were prepared by parallel synthesis. The library members were purified by column chromatography on silica gel and the purified compounds characterized by LC-MS with LC detection at 214 nm. A selection of the final compounds was also analyzed by (1)H-NMR spectroscopy. The analytically pure final products have been submitted to the Molecular Library Small Molecule Repository (MLSMR) for screening in the Molecular Library Screening Center Network (MLSCN) as part of the NIH Roadmap.
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Affiliation(s)
- Rosanna Solinas
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK 74104, USA.
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Asymmetric Catalysis: Resin-Bound Hydroxyprolylthreonine Derivatives in Enamine-Mediated Reactions. Angew Chem Int Ed Engl 2008; 47:6407-10. [DOI: 10.1002/anie.200801811] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Asymmetric Catalysis: Resin-Bound Hydroxyprolylthreonine Derivatives in Enamine-Mediated Reactions. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801811] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Beghyn T, Deprez-Poulain R, Willand N, Folleas B, Deprez B. Natural compounds: leads or ideas? Bioinspired molecules for drug discovery. Chem Biol Drug Des 2008; 72:3-15. [PMID: 18554253 DOI: 10.1111/j.1747-0285.2008.00673.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this article, we compare drugs of natural origin to synthetic compounds and analyze the reasons why natural compounds occupy a place of choice in the current pharmacopoeia. The observations reported here support the design of synthetic compounds inspired from plant alkaloids and their biosynthetic pathway. Our reasoning leads to very efficient syntheses of compounds which complexity matches that of indolomonoterpenic alkaloids.
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Affiliation(s)
- Terence Beghyn
- INSERM U761, Biostructures and Drug Discovery, Lille, F-59006, France
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