1
|
Gudise VB, Anwar S. Multicomponent reaction (MCR) for constructing bis-spirocyclohexane skeletons using β-nitrostyrene derived MBH acetates, 1,3-indanedione and aldehydes via [1 + 1 + 1 + 3] annulation. RSC Adv 2023; 13:27456-27460. [PMID: 37711377 PMCID: PMC10498677 DOI: 10.1039/d3ra04996e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023] Open
Abstract
An AB2C type four-component quadruple cascade reaction has been established between nitroallylic MBH acetate, 1,3-indanedione and aldehyde for generating bis-spirocyclohexanes. This reaction progressed in an unusual [1 + 1 + 1 + 3] annulation manner via a Knoevenagel/Michael/Michael/Michael sequence, resulting in the generation of three/four chiral centres, and two all-carbon quaternary centres through the formation of 3 new C-C bonds.
Collapse
Affiliation(s)
- Veera Babu Gudise
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science, Technology and Research-VFSTR, (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India (+91)-8632344700
| | - Shaik Anwar
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science, Technology and Research-VFSTR, (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India (+91)-8632344700
| |
Collapse
|
2
|
Das S, Goswami G, Halder S, Ghorai MK. Domino imino-aldol-aza-Michael and imino-aldol-aza-Michael-imino-aldol reactions: Diastereoselective synthesis of highly functionalized 2,6-disubstituted piperidines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
3
|
Akula PS, Wang YJ, Hong BC, Lee GH, Chien SY. Control of the Organocatalytic Enantioselective α-Alkylation of Vinylogous Carbonyl Enolates for the Synthesis of Tetrahydropyran Derivatives and Beyond. Org Lett 2021; 23:4688-4693. [PMID: 34048266 DOI: 10.1021/acs.orglett.1c01426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The organocatalytic α-alkylation of vinylogous carbonyl compounds to hydroxynitroolefins for the synthesis of hemiacetals was realized with excellent enantioselectivities and in high yields. High diastereoselectivity (up to >20:1) has been accomplished with the addition of Et3N. The α- and γ-alkylation of vinylogous ketone against nitroolefins displayed high but opposite facial selectivities. Transformation of the hemiacetal products to other polycyclic compounds, including the euroticin B analog, has been demonstrated.
Collapse
Affiliation(s)
- Pavan Sudheer Akula
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
| | - Yung-Ju Wang
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
| | - Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei, 106, Taiwan, R.O.C
| | - Su-Ying Chien
- Instrumentation Center, National Taiwan University, Taipei, 106, Taiwan, R.O.C
| |
Collapse
|
4
|
Maram L, Tanaka F. Switching Electrophile Intermediates to Nucleophiles: Michael and Oxa-Diels-Alder Reactions to Afford Polyoxy-Functionalized Piperidine Derivatives with Tetrasubstituted Carbon. Org Lett 2020; 22:2751-2755. [PMID: 32193936 DOI: 10.1021/acs.orglett.0c00735] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Michael, Michael-annulation, and oxa-Diels-Alder reactions of carbohydrate derivatives that afford polyoxy-functionalized piperidine derivatives bearing tetrasubstituted carbon at the 3-position of the piperidine ring are reported. Iminium ions generated from carbohydrate derivatives with amines were converted to enamines in situ, which acted as nucleophiles. As a result, substituents were introduced at the 3-position or both 2- and 3-positions of the piperidines bearing polyoxy groups. This strategy will be useful in drug discovery efforts.
Collapse
Affiliation(s)
- Lingaiah Maram
- Chemistry and Chemical Bioengineering Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| | - Fujie Tanaka
- Chemistry and Chemical Bioengineering Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| |
Collapse
|
5
|
Nair DK, Sivanandan ST, Kendrekar P, Namboothiri IN. Base and catalyst-free synthesis of nitrobenzodiazepines via a cascade N-nitroallylation-intramolecular aza-Michael addition involving o-phenylenediamines and nitroallylic acetates. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
6
|
Gudise VB, Settipalli PC, Reddy EK, Anwar S. Oxa-Michael-Michael Reaction of MBH Alcohol and 2-Arylidene-1,3-indanedione: Regioselective Formal [4+2] Cycloaddition towards Tetrahydrospiropyran Scaffolds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801709] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Veera Babu Gudise
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Poorna Chandrasekhar Settipalli
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Eeda Koti Reddy
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Shaik Anwar
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| |
Collapse
|
7
|
Parella R, Jakkampudi S, Arman H, Zhao JCG. Stereoselective Synthesis of 3-Oxabicyclo[3.3.1]nonan-2-ones via a Domino Reaction Catalyzed by Modularly Designed Organocatalysts. Adv Synth Catal 2019; 361:208-213. [PMID: 31467501 PMCID: PMC6715131 DOI: 10.1002/adsc.201800987] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Indexed: 01/29/2023]
Abstract
A highly stereoselective method for the synthesis of functionalized 3-oxabicyclo[3.3.1]nonan-2-one derivatives with four contiguous stereogenic centers, including one tetrasubstituted stereogenic center, was realized through an organocatalytic domino Michael-hemiacetalization-Michael reaction of (E)-3-aryl-2-nitroprop-2-enols and (E)-7-aryl-7-oxohept-5-enals followed by a PCC oxidation. Using the modularly designed organocatalysts (MDOs) self-assembled from cinchona alkaloid derivatives and amino acids in the reaction media, the title products were obtained in good yields (up to 84%), excellent diastereoselectivities (> 99:1 dr), and high enantioselectivities (up to 96% ee).
Collapse
Affiliation(s)
- Ramarao Parella
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| | - Satish Jakkampudi
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| | - Hadi Arman
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| | - John C.-G. Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| |
Collapse
|
8
|
Li X, Guo L, Peng C, Han B. Organocatalytic Asymmetric Cascade Reactions Based on Gamma-Nitro Carbonyl Compound. CHEM REC 2018; 19:394-423. [PMID: 30019511 DOI: 10.1002/tcr.201800047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/19/2018] [Indexed: 12/11/2022]
Abstract
The significant advancements in asymmetric organocascade reactions have been accomplished during the past decades, paving the way to the efficient and stereoselective construction of structurally complex scaffolds from simple and readily available starting materials. Nitro-containing cyclic compounds have become a privileged molecular library given their broad and promising activities in various therapeutic areas. In various approaches to build these valuable scaffolds, the utility of γ-nitrocarbonyl intermediates is one of the most efficient approaches due to its high efficiency, reliability and versatility. The strategies and catalyst systems described here highlight recent advances in the enantioselective synthesis of nitro-containing cyclic molecules via organocascade strategies based on γ-nitrocarbonyl intermediates. Various organocatalysts with distinct activation modes have found application in providing these sophisticated compounds. This review is organized according to the types of organocatalyst. These methods are of importance for the construction of complex chiral cyclic frameworks and the design of new pharmaceutical compounds. We believe that compounds based on nitro-containing cyclic skeletons have the potential to provide novel therapeutic agents and useful biological tools.
Collapse
Affiliation(s)
- Xiang Li
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li Guo
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,Ministry of Education Key Laboratory of Standardization of Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| |
Collapse
|
9
|
Pawar TJ, Jiang H, Vázquez MA, Villegas Gómez C, Cruz Cruz D. Aminocatalytic Privileged Diversity-Oriented Synthesis (ApDOS): An Efficient Strategy to Populate Relevant Chemical Spaces. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800273] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tushar J. Pawar
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - Hao Jiang
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - Miguel A. Vázquez
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - Clarisa Villegas Gómez
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - David Cruz Cruz
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| |
Collapse
|
10
|
Vetica F, Chauhan P, Dochain S, Enders D. Asymmetric organocatalytic methods for the synthesis of tetrahydropyrans and their application in total synthesis. Chem Soc Rev 2018; 46:1661-1674. [PMID: 28262863 DOI: 10.1039/c6cs00757k] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent advancement in the area of asymmetric organocatalysis led to the development of new methodologies for the construction of valuable enantiopure molecules, including various heterocycles. As one of the latter class of compounds tetrahydropyrans (THPs) constitute a core structure of a wide array of bioactive natural products. A noticeable growth has been observed in the asymmetric synthesis of THPs using small organic molecules as catalysts. This Tutorial Review describes the organocatalytic methods available to furnish THPs as well as the application of these methodologies in the total synthesis of THP-based natural products.
Collapse
Affiliation(s)
- Fabrizio Vetica
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Pankaj Chauhan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Simon Dochain
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| |
Collapse
|
11
|
D'Elia CS, Goudedranche S, Constantieux T, Bella M, Bonne D, Rodriguez J. Expeditious Synthesis of Enantioenriched Tetrahydropyrans via
Chemoselective C−N
bond Cleavage of Aza-Oxa-Bicyclo[3.2.1]Octanes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700735] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Marco Bella
- Sapienza Università di Roma; Dipartimento di Chimica; Piazzale Aldo Moro 5 00185 Roma Italia
| | - Damien Bonne
- Aix Marseille Univ; CNRS; Centrale Marseille; iSm2; Marseille France
| | - Jean Rodriguez
- Aix Marseille Univ; CNRS; Centrale Marseille; iSm2; Marseille France
| |
Collapse
|
12
|
Balha M, Mondal B, Sahoo SC, Pan SC. Organocatalytic Asymmetric Michael-Hemiacetalization Reaction Between 2-Hydroxyacetophenones and Enals: A Route to Chiral β,γ-Disubstituted γ-Butyrolactones. J Org Chem 2017; 82:6409-6416. [PMID: 28525722 DOI: 10.1021/acs.joc.7b00363] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first highly enantioselective organocatalytic reaction employing 2-hydroxyacetophenones is disclosed, namely Michael-hemiacetalization reaction of 2-hydroxyacetophenones with enals. The combination of a primary amine and a secondary amine catalyst was found to be the best choice for this methodology. The products of this reaction were obtained in high enantio- and diastereoselectivities and were converted to a variety of biologically important γ-butyrolactones.
Collapse
Affiliation(s)
- Megha Balha
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Buddhadeb Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Subas Chandra Sahoo
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| |
Collapse
|
13
|
Nebe M, Opatz T. Synthesis of Piperidines and Dehydropiperidines. ADVANCES IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1016/bs.aihch.2016.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
14
|
Huang WY, Anwar S, Chen K. Morita-Baylis-Hillman (MBH) Reaction Derived Nitroallylic Alcohols, Acetates and Amines as Synthons in Organocatalysis and Heterocycle Synthesis. CHEM REC 2016; 17:363-381. [DOI: 10.1002/tcr.201600075] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 02/01/2023]
Affiliation(s)
- Wan-Yun Huang
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 116 (ROC)
| | - Shaik Anwar
- Division of Chemistry; Department of Science and Humanities; Vignan's Foundation for Science; Technology and Research University-VFSTRU; (Vignan University) Vadlamudi; Guntur 522 213 Andhra Pradesh India
| | - Kwunmin Chen
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 116 (ROC)
| |
Collapse
|
15
|
Quintard A, Rodriguez J. Organo- and Iron(0) Catalysis for an Enantioselective Michael Addition-Hemiketalization-Fragmentation Sequence to Protected ω-Hydroxy-nitroketones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600618] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adrien Quintard
- Aix Marseille Univ; CNRS; Centrale Marseille, iSm2 13397 Marseille France
| | - Jean Rodriguez
- Aix Marseille Univ; CNRS; Centrale Marseille, iSm2 13397 Marseille France
| |
Collapse
|
16
|
Ozeki M, Hayama N, Fukutome S, Egawa H, Arimitsu K, Kajimoto T, Hosoi S, Iwasaki H, Kojima N, Node M, Yamashita M. Construction of Seven Contiguous Chiral Centers by Two Methods: Quadruple Michael Addition vs Stepwise Double-Double Michael Addition Controlled by Adding Speed of Michael Acceptor. ChemistrySelect 2016. [DOI: 10.1002/slct.201600620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Minoru Ozeki
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Noboru Hayama
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Shintaro Fukutome
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Honoka Egawa
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Kenji Arimitsu
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Tetsuya Kajimoto
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
- Medicinal Organic Chemistry Lab.; College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Noji-higashi, Kusatsu Shiga 525-8577 Japan
| | - Shinzo Hosoi
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Hiroki Iwasaki
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Naoto Kojima
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Manabu Node
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Masayuki Yamashita
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| |
Collapse
|
17
|
Gurubrahamam R, Chen YM, Huang WY, Chan YT, Chang HK, Tsai MK, Chen K. Dihydrooxazine N-Oxide Intermediates as Resting States in Organocatalytic Kinetic Resolution of Functionalized Nitroallylic Amines with Aldehydes. Org Lett 2016; 18:3046-9. [DOI: 10.1021/acs.orglett.6b00493] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ramani Gurubrahamam
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| | - Yan ming Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| | - Wan-Yun Huang
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| | - Yu-Te Chan
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| | - Hsiang-Kai Chang
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| | - Ming-Kang Tsai
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan R.O.C
| |
Collapse
|
18
|
Mane V, Pandey J, Ayyagari N, Dey C, Kale R, Namboothiri INN. Synthesis of hydrazinoheterocycles from Morita–Baylis–Hillman adducts of nitroalkenes with azodicarboxylates. Org Biomol Chem 2016; 14:2427-38. [DOI: 10.1039/c5ob02656c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Hydrazinonitroalkenes derived from nitroalkenes and azodicarboxylates are excellent substrates for the synthesis of hitherto unreported hydrazinotriazoles and hydrazinodihydrofurans.
Collapse
Affiliation(s)
- Vaijinath Mane
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Jyoti Pandey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Narasihmam Ayyagari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Chandan Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Raju Kale
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | | |
Collapse
|
19
|
Feng HX, Tan R, Liu YK. An Efficient One-Pot Approach to the Construction of Chiral Nitrogen-Containing Heterocycles under Mild Conditions. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01772] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huan-Xi Feng
- Key
Laboratory of Marine Drugs, Chinese Ministry of Education, School
of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, P. R. China
| | - Rui Tan
- School
of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Yan-Kai Liu
- Key
Laboratory of Marine Drugs, Chinese Ministry of Education, School
of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, P. R. China
| |
Collapse
|
20
|
Chen S, Lou Q, Ding Y, Zhang S, Hu W, Zhao J. Organocatalytic Enantioselective Michael Reaction of Malononitrile with β,β-Disubstituted Nitroalkenes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500079] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
21
|
Gurubrahamam R, Cheng YS, Chen K. Control of Five Contiguous Stereogenic Centers in an Organocatalytic Kinetic Resolution via Michael/Acetalization Sequence: Synthesis of Fully Substituted Tetrahydropyranols. Org Lett 2015; 17:430-3. [DOI: 10.1021/ol5033656] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ramani Gurubrahamam
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - You-Song Cheng
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| |
Collapse
|
22
|
Gopi E, Kumar T, Menna-Barreto RFS, Valença WO, da Silva Júnior EN, Namboothiri INN. Imidazoles from nitroallylic acetates and α-bromonitroalkenes with amidines: synthesis and trypanocidal activity studies. Org Biomol Chem 2015; 13:9862-71. [DOI: 10.1039/c5ob01444a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
One-pot cascade reactions of amidines with nitroallylic acetates and α-bromonitroalkenes provide functionalized imidazoles that exhibit trypanocidal activity.
Collapse
Affiliation(s)
- Elumalai Gopi
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Tarun Kumar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | | | - Wagner O. Valença
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | | | | |
Collapse
|
23
|
Mane V, Kumar T, Pradhan S, Katiyar S, Namboothiri INN. One-pot regioselective synthesis of functionalized and fused furans from Morita–Baylis–Hillman and Rauhut–Currier adducts of nitroalkenes. RSC Adv 2015. [DOI: 10.1039/c5ra11471c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Functionalized and fused furans were synthesized by a one-pot regioselective cascade reaction from Morita–Baylis–Hillman acetates and Rauhut–Currier adducts of nitroalkenes.
Collapse
Affiliation(s)
- Vaijinath Mane
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Tarun Kumar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sourav Pradhan
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Savita Katiyar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | | |
Collapse
|
24
|
Halimehjani AZ, Namboothiri INN, Hooshmand SE. Part II: nitroalkenes in the synthesis of heterocyclic compounds. RSC Adv 2014. [DOI: 10.1039/c4ra08830a] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
25
|
Suryavanshi PA, Sridharan V, Maiti S, Menéndez JC. Fully diastereoselective synthesis of polysubstituted, functionalized piperidines and decahydroquinolines based on multicomponent reactions catalyzed by cerium(IV) ammonium nitrate. Chemistry 2014; 20:8791-9. [PMID: 24909665 DOI: 10.1002/chem.201402607] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Indexed: 11/05/2022]
Abstract
The cerium(IV) ammonium nitrate (CAN)-catalyzed, three-component reaction between primary amines, β-dicarbonyl compounds, and α,β-unsaturated aldehydes in ethanol heated to reflux, constitutes a general, one-pot synthesis of 1,4-dihydropyridines. Their reduction with sodium triacetoxyborohydride furnished piperidine derivatives bearing up to five substituents with full diastereoselectivity in a hitherto inaccessible stereochemical arrangement. The reaction proceeded with no significant loss of enantiomeric purity under mild reduction conditions that are compatible with several functional groups that are normally sensitive to reduction. Octahydroquinolin-5-one derivatives, which were prepared by a modified version of the initial multicomponent reaction, were not suitable substrates for the sodium triacetoxyborohydride mediated reduction, but they were transformed into the corresponding decahydroquinolines, including a precursor of the amphibian alkaloid pumiliotoxin C, by catalytic hydrogenation under a variety of conditions.
Collapse
Affiliation(s)
- Padmakar A Suryavanshi
- Departmento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal sn, 28040 Madrid (Spain), Fax: (+34) 91-3941822
| | | | | | | |
Collapse
|
26
|
Urbanietz G, Atodiresei I, Enders D. Asymmetric Synthesis of Functionalized Dihydro- and Tetrahydropyrans via an Organocatalytic Domino Michael-Hemiacetalization Reaction. SYNTHESIS-STUTTGART 2014; 46:1261-1269. [PMID: 25284900 DOI: 10.1055/s-0033-1340826] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Starting from α-hydroxymethyl nitroalkenes and various 1,3-dicarbonyl compounds, a one-pot organocatalyzed diastereo- and enantioselective synthesis of polyfunctionalized dihydro- and tetrahydropyran derivatives via a domino Michael-hemiacetalization sequence is reported. The title compounds bearing a variety of functional groups can be synthesized in this way in good yields (59-91%) and with moderate to excellent diastereoselectivities (26-98% de) and enantioselectivities (71-99% ee).
Collapse
Affiliation(s)
- Gregor Urbanietz
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Iuliana Atodiresei
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| |
Collapse
|
27
|
Scheffler U, Mahrwald R. Recent Advances in Organocatalytic Methods for Asymmetric CC Bond Formation. Chemistry 2013; 19:14346-96. [DOI: 10.1002/chem.201301996] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
28
|
Evolution of the Total Syntheses of Batzellasides the First Marine Piperidine Iminosugar. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Batzellasides A-C are C-alkylated piperidine iminosugars isolated from a sponge Batzella sp. The first total synthesis of (+)-batzellaside B was achieved by employing a chiral pool approach starting from L-arabinose for the construction of a piperidine ring system. Subsequently a practical second-generation synthesis was developed by utilizing a Sharpless asymmetric dihydroxylation for the preparation of the common piperidine intermediate elaborated in the first-generation synthesis. The overall yield of batzellaside B was improved to 3.3% by introducing the exocyclic C8 stereocenter via facial selective hydride addition to a linear ketone. These syntheses allowed for the determination of the absolute stereochemistry of this natural product as well as for providing precious samples which would pave the way for further biological studies.
Collapse
|
29
|
Trzoss L, Xu J, Lacoske MH, Theodorakis EA. Synthesis of the tetracyclic core of Illicium sesquiterpenes using an organocatalyzed asymmetric Robinson annulation. Beilstein J Org Chem 2013; 9:1135-40. [PMID: 23843905 PMCID: PMC3701413 DOI: 10.3762/bjoc.9.126] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 05/24/2013] [Indexed: 01/19/2023] Open
Abstract
An enantioselective synthesis of the core framework of neurotrophic Illicium majucin-type sesquiterpenes is described here. This strategy is based on an organocatalyzed asymmetric Robinson annulation and provides an efficient approach for a diversity-oriented synthesis of Illicium natural products that holds remarkable therapeutic potential for neurodegenerative diseases.
Collapse
Affiliation(s)
- Lynnie Trzoss
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Jing Xu
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Michelle H Lacoske
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Emmanuel A Theodorakis
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| |
Collapse
|
30
|
Kastl R, Wennemers H. Peptide-Catalyzed Stereoselective Conjugate Addition Reactions Generating All-Carbon Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301583] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
31
|
Kastl R, Wennemers H. Peptide-Catalyzed Stereoselective Conjugate Addition Reactions Generating All-Carbon Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2013; 52:7228-32. [DOI: 10.1002/anie.201301583] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Indexed: 11/12/2022]
|
32
|
Seebach D, Sun X, Ebert MO, Schweizer WB, Purkayastha N, Beck AK, Duschmalé J, Wennemers H, Mukaiyama T, Benohoud M, Hayashi Y, Reiher M. Stoichiometric Reactions of Enamines Derived from Diphenylprolinol Silyl Ethers with Nitro Olefins and Lessons for the Corresponding Organocatalytic Conversions - a Survey. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201300079] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
33
|
Martin TJ, Rovis T. A catalytic asymmetric synthesis of polysubstituted piperidines using a rhodium(I)-catalyzed [2+2+2] cycloaddition employing a cleavable tether. Angew Chem Int Ed Engl 2013; 52:5368-71. [PMID: 23606664 DOI: 10.1002/anie.201301741] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Timothy J Martin
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | | |
Collapse
|
34
|
Martin TJ, Rovis T. A Catalytic Asymmetric Synthesis of Polysubstituted Piperidines Using a Rhodium(I)-Catalyzed [2+2+2] Cycloaddition Employing a Cleavable Tether. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301741] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
35
|
Hong BC, Lan DJ, Dange NS, Lee GH, Liao JH. Organocatalytic Enantioselective Michael-Henry Acetalization of Glutaraldehyde and 3-Aryl-2-nitroprop-2-enols: A Facile Entry to 3-Oxabicyclo[3.3.1]nonan-2-ones with Four Consecutive Stereogenic Centers. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201496] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
36
|
Kumar I, Ramaraju P, Mir NA, Singh D, Gupta VK, Rajnikant. Highly enantioselective [4+2] annulation via organocatalytic Mannich-reductive cyclization: one-pot synthesis of functionalized piperidines. Chem Commun (Camb) 2013; 49:5645-7. [DOI: 10.1039/c3cc42431f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
37
|
Wierzejska J, Motogoe SI, Makino Y, Sengoku T, Takahashi M, Yoda H. A new approach toward the total synthesis of (+)-batzellaside B. Beilstein J Org Chem 2012; 8:1831-8. [PMID: 23209519 PMCID: PMC3511019 DOI: 10.3762/bjoc.8.210] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Accepted: 09/24/2012] [Indexed: 11/23/2022] Open
Abstract
A new synthetic approach to (+)-batzellaside B from naturally abundant L-pyroglutamic acid is presented in this article. The key synthetic step involves Sharpless asymmetric dihydroxylation of an olefinic substrate functionalized with an acetoxy group to introduce two chiral centres diastereoselectively into the structure. Heterocyclic hemiaminal 4, which could be converted from the resulting product, was found to provide stereospecific access to enantiomerically enriched allylated intermediate, offering better prospects for the total synthesis of this natural product.
Collapse
Affiliation(s)
- Jolanta Wierzejska
- Department of Materials Science, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan
| | | | | | | | | | | |
Collapse
|
38
|
Sahoo G, Rahaman H, Madarász Á, Pápai I, Melarto M, Valkonen A, Pihko PM. Dihydrooxazine Oxides as Key Intermediates in Organocatalytic Michael Additions of Aldehydes to Nitroalkenes. Angew Chem Int Ed Engl 2012; 51:13144-8. [DOI: 10.1002/anie.201204833] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 10/10/2012] [Indexed: 11/09/2022]
|
39
|
Sahoo G, Rahaman H, Madarász Á, Pápai I, Melarto M, Valkonen A, Pihko PM. Dihydrooxazine Oxides as Key Intermediates in Organocatalytic Michael Additions of Aldehydes to Nitroalkenes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204833] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
40
|
Wang L, Zhang X, Ma D. Organocatalytic Michael addition of aldehydes to trisubstituted nitroolefins. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.088] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
41
|
Maji B, Ji L, Wang S, Vedachalam S, Ganguly R, Liu XW. N-Heterocyclic Carbene Catalyzed Homoenolate-Addition Reaction of Enals and Nitroalkenes: Asymmetric Synthesis of 5-Carbon-Synthon δ-Nitroesters. Angew Chem Int Ed Engl 2012; 51:8276-80. [DOI: 10.1002/anie.201203449] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Indexed: 12/24/2022]
|
42
|
Maji B, Ji L, Wang S, Vedachalam S, Ganguly R, Liu XW. N-Heterocyclic Carbene Catalyzed Homoenolate-Addition Reaction of Enals and Nitroalkenes: Asymmetric Synthesis of 5-Carbon-Synthon δ-Nitroesters. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203449] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
43
|
Kimmel KL, Weaver JD, Lee M, Ellman JA. Catalytic Enantioselective Protonation of Nitronates Utilizing an Organocatalyst Chiral Only at Sulfur. J Am Chem Soc 2012; 134:9058-61. [DOI: 10.1021/ja3026196] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kyle L. Kimmel
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Jimmie D. Weaver
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Melissa Lee
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Jonathan A. Ellman
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| |
Collapse
|
44
|
Huo L, Ma A, Zhang Y, Ma D. Assembly of 4-Substituted 3-Nitro-1,2,3,4-tetrahydropyridines via Organocatalytic Michael Addition. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100903] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
45
|
Raimondi W, Baslé O, Constantieux T, Bonne D, Rodriguez J. Activation of 1,2-Keto Esters with Takemoto’s Catalyst toward Michael Addition to Nitroalkenes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100739] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
46
|
Naumova AS, Mikhaylov AA, Struchkova MI, Khomutova YA, Tartakovsky VA, Ioffe SL. Stereocontrolled Oxidation of Six-Membered Cyclic O-Silyl Nitroso Acetals with mCPBA: Umpolung Approach to Functionalized Nitro Compounds. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101768] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
47
|
|
48
|
Kimmel KL, Weaver JD, Ellman JA. Enantio- and diastereoselective addition of cyclohexylMeldrum's acid to β- and α,β-disubstituted nitroalkenesvia N-sulfinyl urea catalysis. Chem Sci 2012. [DOI: 10.1039/c1sc00441g] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
49
|
Duschmalé J, Wennemers H. Adapting to substrate challenges: peptides as catalysts for conjugate addition reactions of aldehydes to α,β-disubstituted nitroolefins. Chemistry 2011; 18:1111-20. [PMID: 22189758 DOI: 10.1002/chem.201102484] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Indexed: 11/11/2022]
Abstract
Conjugate addition reactions of aldehydes to α,β-disubstituted nitroolefins are important because they provide synthetically useful γ-nitroaldehydes bearing three consecutive stereogenic centers. Such reactions are challenging due to the drastically lower reactivity of α,β-disubstituted nitroolefins compared to, for example, β-monosubstituted nitroolefins. The testing of a small collection of peptides of the type Pro-Pro-Xaa (Xaa=acidic amino acid) led to the identification of H-Pro-Pro-D-Gln-OH and H-Pro-Pro-Asn-OH as excellent stereoselective catalysts for this transformation. In the presence of 5 mol% of these peptides different combinations of aldehydes and α,β-disubstituted nitroolefins react readily with each other providing γ-nitroaldehydes in good yields and diastereoselectivities as well as excellent enantioselectivities. Chiral pyrrolidines as well as fully substituted γ-butyrolactams and γ-amino acids are easily accessible from the γ-nitroaldehydes. Mechanistic studies demonstrate that the configuration at all three stereogenic centers is induced by the peptidic catalysts. Only a minimal amount of products from homo-aldol reactions is observed demonstrating the high chemoselectivity of the peptidic catalysts.
Collapse
Affiliation(s)
- Jörg Duschmalé
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | | |
Collapse
|
50
|
Durini M, Sahr FA, Kuhn M, Civera M, Gennari C, Piarulli U. Bifunctional 2,5-Diketopiperazines as Efficient Organocatalysts for the Enantioselective Conjugate Addition of Aldehydes to Nitroolefins. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100794] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|