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Chen H, Tang J, Liu T, Yu LF, Xing D, Yang F. Enantioselective synthesis of chiral 3-alkyl-3-nitro-4-chromanones via chiral thiourea-catalysed intramolecular Michael-type cyclization. Org Biomol Chem 2021; 19:7403-7408. [PMID: 34387633 DOI: 10.1039/d1ob01296g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report an enantioselective method for the rapid construction of chiral 3-nitro-4-chromanones via a chiral thiourea-catalyzed intramolecular Michael-type cyclization reaction. With this method, a series of 3,3-disubstituted-3-nitro-4-chromanones bearing contiguous C2/C3 stereocenters were obtained with high diastereoselectivities and good to excellent enantioselectivities. In vitro biological evaluations indicated that the chiral amide derivative of the product showed more potent antitumor activities than both the racemic and the corresponding enantiomers, showcasing the high influence of enantioselective methodology development toward medicinal studies.
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Affiliation(s)
- Huiqing Chen
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd., Shanghai, 200062, China.
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Asymmetric organocatalytic cascade Michael/acyl transfer reaction of 2-hydroxychalcones with α-nitroketones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Liu Y, Ye L, Shi Z, Yang X, Zhao Z, Li X. Highly enantioselective Michael addition of α-nitroacetate to α,β-unsaturated pyrazolamide catalyzed by a bifunctional squaramide. Chirality 2018; 30:1287-1303. [PMID: 30286255 DOI: 10.1002/chir.23023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/20/2018] [Accepted: 08/30/2018] [Indexed: 01/03/2023]
Abstract
A highly enantioselective (91- > 99% ee) Michael addition of α-nitroacetate to α,β-unsaturated pyrazolamide was developed in the presence of a bifunctional squaramide. Satisfactory isolated yields (42%-99%) have been achieved with a wide range of α,β-unsaturated pyrazolamides, albeit acceptor of this type displayed poor reactivity in the precedent reports. The adducts resulting from this protocol are useful synthetic intermediates for further synthetic modification.
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Affiliation(s)
- Yingying Liu
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Zhichuan Shi
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Xuejun Yang
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Zhigang Zhao
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Xuefeng Li
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu, China
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Sakamoto D, Hayashi Y. Asymmetric Michael Reaction of Aldehyde and β-Substituted α-Nitroacrylate Catalyzed by Diphenylprolinol Silyl Ether. CHEM LETT 2018. [DOI: 10.1246/cl.180273] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daisuke Sakamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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Liu Y, Zhang Y, Duan HX, Wanyan DY, Wang YQ. Enantioselective organocatalytic Michael additions of N,N'-dialkylbarbituric acids to enones. Org Biomol Chem 2017; 15:8669-8679. [PMID: 28990625 DOI: 10.1039/c7ob02116j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N,N'-Dialkylbarbituric acids as cyclic malonamide donors were successfully used in the enantioselective Michael addition reaction of enones. Using cinchona alkaloid-based bifunctional squaramide as an organocatalyst, this Michael reaction of N,N'-di-tert-butylbarbituric acid with various enones features a highly enantioselective (91-99% ee) production of the corresponding optically active 5-substituted barbituric acid derivatives. The transformations of the Michael product for the barbituric acid structural unit were realized in two ways, deprotection to remove the N-tert-butyl group and alkylation to produce 5,5-disubstituted barbituric acid derivatives.
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Affiliation(s)
- Ying Liu
- Provincial Key Laboratory of Polyoxometalate Chemistry, Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
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Liu RL, Tang XZ, Zhang XJ, Yan M, Chan ASC. Organocatalytic asymmetric conjugate addition of t-butyl nitroacetate to o-quinone methides: synthesis of optically active α-nitro-β,β-diaryl-propionates. RSC Adv 2017. [DOI: 10.1039/c6ra28068d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
α-Nitro-β,β-diaryl-propionates were prepared with good yields and excellent enantioselectivities via asymmetric conjugate addition of t-butyl nitroacetate to in situ generated o-quinone methides.
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Affiliation(s)
- Ri-long Liu
- Institute of Drug Synthesis and Pharmaceutical Process
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Xiang-zheng Tang
- Institute of Drug Synthesis and Pharmaceutical Process
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Xue-jing Zhang
- Institute of Drug Synthesis and Pharmaceutical Process
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Ming Yan
- Institute of Drug Synthesis and Pharmaceutical Process
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Albert S. C. Chan
- Institute of Drug Synthesis and Pharmaceutical Process
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
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Chentsova A, Ushakov DB, Seeberger PH, Gilmore K. Synthesis of α-Nitro Carbonyls via Nitrations in Flow. J Org Chem 2016; 81:9415-9421. [DOI: 10.1021/acs.joc.6b01634] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Anna Chentsova
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Dmitry B. Ushakov
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter H. Seeberger
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Kerry Gilmore
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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Liu RL, Yan YY, Zhang T, Zhang XJ, Yan M. A practical synthesis of optically active δ-nitro-α-ketoesters and 4-cyclohexyl-proline catalyzed by chiral squamides. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.10.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhou Y, Yang Q, Shen J, Chen X, Peng Y, Gong Y. Merging Asymmetric Henry Reaction with Organocatalytic Cascade Reaction for the Construction of a Chiral Indolizidine Alkaloid Skeleton. J Org Chem 2015; 80:1446-56. [DOI: 10.1021/jo502379v] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yirong Zhou
- Key Laboratory of Small Fuctional Organic Molecule, Ministry
of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Qin Yang
- Key Laboratory of Small Fuctional Organic Molecule, Ministry
of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Jian Shen
- Key Laboratory of Small Fuctional Organic Molecule, Ministry
of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Xin Chen
- Key Laboratory of Small Fuctional Organic Molecule, Ministry
of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Yiyuan Peng
- Key Laboratory of Small Fuctional Organic Molecule, Ministry
of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
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Zhou Y, Zhu Y, Yan S, Gong Y. Copper-Catalyzed Enantioselective Henry Reaction of Enals and Subsequent Iodocyclization: Stereoselective Construction of Chiral Azatricyclic Frameworks. Angew Chem Int Ed Engl 2013; 52:10265-9. [DOI: 10.1002/anie.201305148] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Indexed: 11/08/2022]
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Zhou Y, Zhu Y, Yan S, Gong Y. Copper-Catalyzed Enantioselective Henry Reaction of Enals and Subsequent Iodocyclization: Stereoselective Construction of Chiral Azatricyclic Frameworks. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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