1
|
Luo ML, Zhao Q, He XH, Xie X, Zhu HP, You FM, Peng C, Zhan G, Huang W. Research progress of indole-fused derivatives as allosteric modulators: Opportunities for drug development. Biomed Pharmacother 2023; 162:114574. [PMID: 36996677 DOI: 10.1016/j.biopha.2023.114574] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/12/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
Allosteric modulation is a direct and effective method for regulating the function of biological macromolecules, which play vital roles in various cellular activities. Unlike orthosteric modulators, allosteric modulators bind to sites distant from the protein's orthosteric/active site and can have specific effects on the protein's function or activity without competing with endogenous ligands. Compared to traditional orthosteric modulators, allosteric modulators offer several advantages, including reduced side effects, greater specificity, and lower toxicity, making them a promising strategy for developing novel drugs. Indole-fused architectures are widely distributed in natural products and bioactive drug leads, displaying diverse biological activities that attract the interest of both chemists and biologists in drug discovery. Currently, an increasing number of indole-fused compounds have exhibited potent activities in allosteric modulation. In this review, we provide a brief summary of examples of allosteric modulators based on the indole-fused complex architecture, highlighting the strategies for drug design/discovery and the structure-activity relationships of allosteric modulators from the perspective of medicinal chemistry.
Collapse
|
2
|
Yuan L, Kachalova L, Khan MEI, Ballini R, Petrini M, Palmieri A. Overcoming the Usual Reactivity of β-Nitroenones: Synthesis of Polyfunctionalized Homoallylic Alcohols and Conjugated Nitrotriene Systems. J Org Chem 2023; 88:4770-4777. [PMID: 36926909 PMCID: PMC10088019 DOI: 10.1021/acs.joc.2c02669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Herein, we report a new application of β-nitroenones as valuable building blocks for the preparation of polyfunctionalized homoallylic alcohols; they can be used as key precursors of conjugated nitrotriene systems. The synthesis of homoallylic alcohols was performed exploiting the chemoselective addition of metal allylating agents to the ketone moiety vs the nitroalkenyl group. The conversion of alcohols into nitrotrienes was achieved under Lewis-acid-promoted conditions. Both classes of compounds were obtained in good to excellent yields.
Collapse
Affiliation(s)
- Lixia Yuan
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy.,Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, People's Republic of China
| | - Liudmila Kachalova
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Muhammad E I Khan
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Roberto Ballini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Marino Petrini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Alessandro Palmieri
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| |
Collapse
|
3
|
Thirupathi G, Ashok E, Suresh Kumar A, Ramachary DB. Parts-per-Million-Level, Catalytic [3+2]-Annulations for the Asymmetric Synthesis of Methanobenzo[7]annulenes. Chemistry 2021; 27:18033-18038. [PMID: 34677886 DOI: 10.1002/chem.202103254] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 12/11/2022]
Abstract
3-Alkyl-lawsones selectively reacted with α-alkyl-nitroethylenes under 500 parts-per-million (ppm) quinine-NH-thiourea-catalysis to furnish the chiral methanobenzo[7]annulenes in up to >99 % ee with >20 : 1 dr and TON up to 1820 through tandem Michael/Henry [3+2]-annulations. These asymmetric ppm-level, catalytic tandem [3+2]-annulations would be highly inspirational for the design of many more ppm-level organocatalytic reactions, and at the same time these final molecules are basic skeletons of antibiotics.
Collapse
Affiliation(s)
- Guguloth Thirupathi
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India
| | - Etikala Ashok
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India
| | - A Suresh Kumar
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India
| | | |
Collapse
|
4
|
Affiliation(s)
- Zeynep Dilşad Susam
- Department of Chemistry Middle East Technical University Dumlupınar Bulvarı, No. 1 06800 Çankaya, Ankara Turkey
| | - Cihangir Tanyeli
- Department of Chemistry Middle East Technical University Dumlupınar Bulvarı, No. 1 06800 Çankaya, Ankara Turkey
| |
Collapse
|
5
|
Stereoselective organocascades: from fundamentals to recent developments. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2018-0096] [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]
Abstract
Abstract
Reaction sequences where more bonds are sequentially formed (cascade reactions) may be started either by a stoichiometric or by a catalytic reagent, and proceed in an enantio- diastereo- or non-stereo- selective manner. A wide variety of such strategies has been developed, including both stoichiometric and catalytic ones.
Within the widely developed cascade reactions field, this chapter is not meant to be omni-comprehensive, but to offer an as much as possible complete overview on organocatalytic stereoselective methods. We embrace the more general definitions by Tietze and Denmark, considering as cascade reactions all those one-pot processes that involve two or more bond formations, where each subsequent step is enabled by a structural change caused by the previous one. We will include both two- and multi-component reactions where one or more organocatalysts may be responsible either for all or just some of the occurring transformations. Organocascades will be reported according to the number of involved catalytic cycles.
In the following paragraphs, only cascade reactions that are stereoselective by means of a chiral catalyst will be considered. It will be shown that multiple possibilities, relying on different catalysis modes, are available to achieve the same reaction sequence.
Collapse
|
6
|
Maity R, Sahoo SC, Pan SC. Organocatalytic Asymmetric Michael-Acyl Transfer Reaction of α-Nitroketones with 2-Hydroxybenzylidene Ketones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rajendra Maity
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subas Chandra Sahoo
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| |
Collapse
|
7
|
Yadav A, Srivastava A, Mobin SM, Samanta S. L-Proline-Catalyzed One-Pot Diastereoselective Synthesis of Cyclohexanols from β-Aryl-γ-nitroketones and α,β-Unsaturated Aldehydes: A New Route to 2,3,4,6-Tetrasubstituted Phenols. ChemistrySelect 2019. [DOI: 10.1002/slct.201803521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Anubha Yadav
- Discipline of Chemistry; Indian Institute of Technology Indore Simrol, Indore; 453552 Madhya Pradesh India
| | - Anvita Srivastava
- Nanhi Pari Seemant Engineering Institute Pithoragarh; Uttarakhand 262501 India
| | - Shaikh M. Mobin
- Discipline of Chemistry; Indian Institute of Technology Indore Simrol, Indore; 453552 Madhya Pradesh India
| | - Sampak Samanta
- Discipline of Chemistry; Indian Institute of Technology Indore Simrol, Indore; 453552 Madhya Pradesh India
| |
Collapse
|
8
|
Warad I, Awwadi FF, Abd Al-Ghani B, Sawafta A, Shivalingegowda N, Lokanath NK, Mubarak MS, Ben Hadda T, Zarrouk A, Al-Rimawi F, Odeh AB, Barghouthi SA. Ultrasound-assisted synthesis of two novel [CuBr(diamine) 2·H 2O]Br complexes: Solvatochromism, crystal structure, physicochemical, Hirshfeld surface thermal, DNA/binding, antitumor and antibacterial activities. ULTRASONICS SONOCHEMISTRY 2018; 48:1-10. [PMID: 30080530 DOI: 10.1016/j.ultsonch.2018.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
Two new hydrated monocationic Cu(II) complexes with 1,3-propylenediamine and 1,2-ethylenediamine of general formula [CuBr(N-N)2·H2O]Br were prepared. The complexes were identified by means of several spectroscopic tools (Uv-visible, IR and MS), thermally (TG/DTA) and CHN-elemental analysis. The three dimensional structure for complex A and B was provide by X-ray diffraction studies and showed the Cu(II) ion as 4 + 1 + 1 coordinated, four nitrogen atoms of the diamine ligands, one bromide ion and one H2O semi-coordinated to the Cu(II) center, a typical trans effect is clearly observed in the two complexes. The molecular crystal structures are linked via several H-bonds like N_H…Br and N_H…O. Additionally, intra-molecular H-bonds of kind C_H…Br is observed; these interactions lead to crystal structure three dimensional architecture packing. Hirshfeld surfaces (HSA) analysis was served to figure out the inter-contacts and fingerprints atoms percentage. DNA-binding, antitumor and antibacterial effectiveness of the desired complexes were evaluated.
Collapse
Affiliation(s)
- Ismail Warad
- Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Firas F Awwadi
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
| | - Bahaa Abd Al-Ghani
- Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Ashraf Sawafta
- Biology and Biotechnology Department, AN-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Naveen Shivalingegowda
- Department of Physics, School of Engineering and Technology, Jain University, Bangalore 562 112, India
| | | | | | - Taibi Ben Hadda
- Laboratoire Chimie Matériaux, FSO, Université Mohammed 1ER, Oujda 60000, Morocco
| | - Abdelkader Zarrouk
- Laboratoire Chimie Matériaux, FSO, Université Mohammed 1ER, Oujda 60000, Morocco
| | - Fuad Al-Rimawi
- Department of Chemistry, Faculty of Science and Technology, Al-Quds University, P.O. Box 20002, Al-Quds, Palestine
| | - Abdallah Bani Odeh
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al Quds University, Al Quds, Palestine
| | - Sameer A Barghouthi
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al Quds University, Al Quds, Palestine
| |
Collapse
|
9
|
Huang JR, Sohail M, Taniguchi T, Monde K, Tanaka F. Formal (4+1) Cycloaddition and Enantioselective Michael-Henry Cascade Reactions To Synthesize Spiro[4,5]decanes and Spirooxindole Polycycles. Angew Chem Int Ed Engl 2017; 56:5853-5857. [DOI: 10.1002/anie.201701049] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Ji-Rong Huang
- Chemistry and Chemical Bioengineering Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Okinawa 904-0495 Japan
| | - Muhammad Sohail
- Chemistry and Chemical Bioengineering Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Okinawa 904-0495 Japan
| | - Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science; Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 Sapporo 001-0021 Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science; Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 Sapporo 001-0021 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
|
10
|
Huang JR, Sohail M, Taniguchi T, Monde K, Tanaka F. Formal (4+1) Cycloaddition and Enantioselective Michael-Henry Cascade Reactions To Synthesize Spiro[4,5]decanes and Spirooxindole Polycycles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ji-Rong Huang
- Chemistry and Chemical Bioengineering Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Okinawa 904-0495 Japan
| | - Muhammad Sohail
- Chemistry and Chemical Bioengineering Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Okinawa 904-0495 Japan
| | - Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science; Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 Sapporo 001-0021 Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science; Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 Sapporo 001-0021 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
|
11
|
Rana NK, Joshi H, Jha RK, Singh VK. Enantioselective Tandem Oxidation/Michael-Aldol Approaches to Tetrasubstituted Cyclohexanes. Chemistry 2017; 23:2040-2043. [DOI: 10.1002/chem.201605999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Nirmal K. Rana
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal, M.P.- 462 066 India
| | - Harshit Joshi
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, U.P.- 208 016 India
| | - Rupesh K. Jha
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, U.P.- 208 016 India
| | - Vinod K. Singh
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal, M.P.- 462 066 India
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, U.P.- 208 016 India
| |
Collapse
|
12
|
Govender T, Arvidsson PI, Maguire GEM, Kruger HG, Naicker T. Enantioselective Organocatalyzed Transformations of β-Ketoesters. Chem Rev 2016; 116:9375-437. [PMID: 27463615 DOI: 10.1021/acs.chemrev.6b00156] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The β-ketoester structural motif continues to intrigue chemists with its electrophilic and nucleophilic sites. Proven to be a valuable tool within organic synthesis, natural product, and medicinal chemistry, reports on chiral β-ketoester molecular skeletons display a steady increase. With the reignition of organocatalysis in the past decade, asymmetric methods available for the synthesis of this structural unit has significantly expanded, making it one of the most exploited substrates for organocatalytic transformations. This review provides comprehensive information on the plethora of organocatalysts used in stereoselective organocatalyzed construction of β-ketoester-containing compounds.
Collapse
Affiliation(s)
- Thavendran Govender
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa.,P. I. Arvidsson, Science for Life Laboratory, Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet SE-171 77 Stockholm, Sweden
| | - Glenn E M Maguire
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| |
Collapse
|
13
|
Möhlmann L, Chang GH, Madhusudhan Reddy G, Lee CJ, Lin W. Organocatalytic Enantioselective Synthesis of Tetrahydrofluoren-9-ones via Vinylogous Michael Addition/Henry Reaction Cascade of 1,3-Indandione-Derived Pronucleophiles. Org Lett 2016; 18:688-91. [DOI: 10.1021/acs.orglett.5b03663] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lennart Möhlmann
- Department of Chemistry, National Taiwan Normal University, 88,
Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| | - Geng-Hua Chang
- Department of Chemistry, National Taiwan Normal University, 88,
Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| | - G. Madhusudhan Reddy
- Department of Chemistry, National Taiwan Normal University, 88,
Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| | - Chia-Jui Lee
- Department of Chemistry, National Taiwan Normal University, 88,
Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| | - Wenwei Lin
- Department of Chemistry, National Taiwan Normal University, 88,
Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| |
Collapse
|
14
|
Yu L, Yang Z, Peng J, Li P. Substrate-Controlled Synthesis of Functionalized Cyclohexanes with Four Stereocenters by Organocatalytic Asymmetric Domino Reactions Between γ-Nitro Ketone and Enone. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501303] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
15
|
Andrés JM, de La Cruz N, Valle M, Pedrosa R. Bottom-Up Synthesis of Supported Thioureas and Their Use in Enantioselective Solvent-Free Aza-Henry and Michael Additions. Chempluschem 2015; 81:86-92. [DOI: 10.1002/cplu.201500476] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Indexed: 11/07/2022]
Affiliation(s)
- José M. Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - Noelia de La Cruz
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - María Valle
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| |
Collapse
|
16
|
Xia AB, Zhao L, Wang T, Zhang YP, Zhong AG, Xu DQ, Xu ZY. Highly enantioselective Michael reaction employing cycloheptanone and cyclooctanone as nucleophiles. NEW J CHEM 2015. [DOI: 10.1039/c4nj01206b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic Michael reaction of cycloheptanone and cyclooctanone with nitrodienes and nitroolefins catalyzed by primary amine catalysts has been accomplished.
Collapse
Affiliation(s)
- Ai-Bao Xia
- Catalytic Hydrogenation Research Centre
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou
- China
| | - Long Zhao
- Catalytic Hydrogenation Research Centre
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou
- China
| | - Tao Wang
- Catalytic Hydrogenation Research Centre
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou
- China
| | - Yan-Peng Zhang
- Catalytic Hydrogenation Research Centre
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou
- China
| | - Ai-Guo Zhong
- Department of Pharmaceutical and Chemical Engineering
- Taizhou College
- Linhai Zhejiang
- China
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Centre
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou
- China
| | - Zhen-Yuan Xu
- Catalytic Hydrogenation Research Centre
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou
- China
| |
Collapse
|
17
|
Martínez JI, Villar L, Uria U, Carrillo L, Reyes E, Vicario JL. Bifunctional Squaramide Catalysts with the Same Absolute Chirality for the Diastereodivergent Access to Densely Functionalised Cyclohexanes through Enantioselective Domino Reactions. Synthesis and Mechanistic Studies. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400502] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
18
|
Yu L, Yang Q, Li P. Phase-Transfer-Catalyst-Mediated Domino Reaction of γ-Nitro Ketones with Chalcones: Approach to Functionalized Six-Membered-Ring Carbocycles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
19
|
Liang Q, He J, Ni B. Asymmetric domino Michael–Henry reaction of 1,2-diones with nitroolefins catalyzed by a chiral bisoxazolidine–Ni(acac)2 complex. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
20
|
Loh CCJ, Chauhan P, Hack D, Lehmann C, Enders D. Rapid Asymmetric Synthesis of Highly Functionalized Indanolsviaa Michael/Henry Organocascade with Submol% Squaramide Catalyst Loadings. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400499] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
21
|
Hahn R, Raabe G, Enders D. Asymmetric synthesis of highly functionalized tetrahydropyrans via a one-pot organocatalytic Michael/Henry/ketalization sequence. Org Lett 2014; 16:3636-9. [PMID: 24971998 PMCID: PMC4700516 DOI: 10.1021/ol501236a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A diastereo- and enantioselective Michael/Henry/ketalization sequence to functionalized tetrahydropyrans is described. The multicomponent cascade reaction uses acetylacetone or β-keto esters, β-nitrostyrenes, and alkynyl aldehydes as substrates affording tetrahydropyrans with five contiguous stereocenters. Employing a bifunctional quinine-based squaramide organocatalyst, the title compounds are obtained in moderate to good yields (27-80%), excellent enantiomeric excesses (93-99% ee), and high diastereomeric ratios (dr > 20:1) after one crystallization.
Collapse
Affiliation(s)
- Robert Hahn
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gerhard Raabe
- 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
|
22
|
Halimehjani AZ, Namboothiri INN, Hooshmand SE. Nitroalkenes in the synthesis of carbocyclic compounds. RSC Adv 2014. [DOI: 10.1039/c4ra04069d] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
|
23
|
Arai T, Yamamoto Y. Diversity-Oriented Asymmetric Catalysis (DOAC): Stereochemically Divergent Synthesis of Thiochromanes Using an Imidazoline–Aminophenol–Nickel-Catalyzed Michael/Henry Reaction. Org Lett 2014; 16:1700-3. [DOI: 10.1021/ol500361w] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takayoshi Arai
- Department of Chemistry,
Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Yushi Yamamoto
- Department of Chemistry,
Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| |
Collapse
|
24
|
Dhakal RC, Dieter RK. Regioselective 1,4-Conjugate Addition of Grignard Reagents to Nitrodienes in the Presence of Catalytic Amounts of Zn(II) Salts. Org Lett 2014; 16:1362-5. [DOI: 10.1021/ol500114m] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ramesh C. Dhakal
- Hunter
Laboratory, Department
of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - R. Karl Dieter
- Hunter
Laboratory, Department
of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| |
Collapse
|
25
|
Volla CMR, Atodiresei I, Rueping M. Catalytic C-C bond-forming multi-component cascade or domino reactions: pushing the boundaries of complexity in asymmetric organocatalysis. Chem Rev 2013; 114:2390-431. [PMID: 24304297 DOI: 10.1021/cr400215u] [Citation(s) in RCA: 875] [Impact Index Per Article: 79.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chandra M R Volla
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
| | | | | |
Collapse
|
26
|
Loh CCJ, Hack D, Enders D. Asymmetric domino synthesis of indanes bearing four contiguous stereocentres catalyzed by sub-mol% loadings of a squaramide in minutes. Chem Commun (Camb) 2013; 49:10230-2. [PMID: 24064746 PMCID: PMC4169095 DOI: 10.1039/c3cc46033a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An efficient diastereo- and enantioselective synthesis of polyfunctionalized indanes bearing four contiguous stereogenic centres in generally very short reaction times and sub-mol% squaramide catalyst loadings has been developed. The novel methodology creates a maximum of two stereocentres per bond formation via an organocatalytic Michael-Henry domino reaction.
Collapse
Affiliation(s)
- Charles C J Loh
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | | | | |
Collapse
|
27
|
Loh CCJ, Atodiresei I, Enders D. Asymmetric Organocatalytic Michael/Henry Domino Reactions through Hydrogen-Bond Activation: Kinetic Access to Indane Scaffolds Bearingcis-Vicinal Substituents. Chemistry 2013; 19:10822-6. [DOI: 10.1002/chem.201302131] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Indexed: 12/22/2022]
|
28
|
Zeng X. Recent Advances in Catalytic Sequential Reactions Involving Hydroelement Addition to Carbon–Carbon Multiple Bonds. Chem Rev 2013; 113:6864-900. [DOI: 10.1021/cr400082n] [Citation(s) in RCA: 374] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xiaoming Zeng
- Center for
Organic Chemistry, Frontier Institute of
Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, 710054, P. R. China
| |
Collapse
|
29
|
Enders D, Hahn R, Atodiresei I. Asymmetric Synthesis of Functionalized Tetrahydronaphthalenesviaan Organocatalytic Nitroalkane-Michael/Henry Domino Reaction. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300039] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
30
|
Yang W, Jiang KZ, Lu X, Yang HM, Li L, Lu Y, Xu LW. Molecular assembly of an achiral phosphine and a chiral primary amine: a highly efficient supramolecular catalyst for the enantioselective Michael reaction of aldehydes with maleimides. Chem Asian J 2013; 8:1182-90. [PMID: 23554319 DOI: 10.1002/asia.201300141] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 02/20/2013] [Indexed: 12/27/2022]
Abstract
A combined catalyst system of a cinchonidine-derived primary amine and triphenylphosphine (CD-NH2 /PPh3 ) exhibited high catalytic performance in the Michael reaction of aldehydes with maleimides, thereby affording the corresponding functionalized aldehydes in excellent yields (up to 99 %) and enantioselectivities (>99 % ee). More interestingly, the significance of the phosphine in enhancing the enantioselectivities in the chiral-primary-amine-catalyzed Michael reaction was revealed. Furthermore, we explored the origin of the reaction mechanism in the Michael addition promoted by the dual organocatalytic system. On the basis of experimental results and spectroscopic analysis, such as UV/Vis, fluorescence emission (FL), NMR, and circular dichroism (CD) spectroscopy, as well as ESI-MS, we found that the molecular assembly of phosphine and primary amine played a crucial role in this enantioselective reaction, in which a possible supramolecular complex was formed as an effective chiral catalyst through noncovalent molecular interactions of a cinchona alkaloid-derived primary amine with triphenylphosphine.
Collapse
Affiliation(s)
- Wei Yang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, PR China
| | | | | | | | | | | | | |
Collapse
|
31
|
Synthesis of the atropurpuran A-ring via an organocatalytic asymmetric intramolecular Michael addition. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.02.078] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
32
|
Chavan SP, Garai S, Pawar KP. Asymmetric total synthesis of (−)-venlafaxine using an organocatalyst. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
33
|
Rajkumar S, Shankland K, Goodman JM, Cobb AJA. Organocatalytic domino reaction of cyanosulfones: access to complex cyclohexane systems with quaternary carbon centers. Org Lett 2013; 15:1386-9. [PMID: 23461553 DOI: 10.1021/ol400356k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
When ε-nitro-α,β-unsaturated esters are added to conjugated cyanosulfones in the presence of a bifunctional thiourea catalyst, a highly stereoselective domino reaction occurs to generate complex cyclohexanes with up to four stereogenic centers, one of which is quaternary in nature. Therefore, it is demonstrated that, like nitro compounds, sulfones can undergo an asymmetric intramolecular conjugate addition to α,β-unsaturated esters in the presence of a bifunctional organocatalyst.
Collapse
Affiliation(s)
- Sundaram Rajkumar
- School of Chemistry, Food and Pharmacy, University of Reading, Whiteknights, Reading, Berks RG6 6AD, UK
| | | | | | | |
Collapse
|
34
|
Ballini R, Araújo N, Gil MV, Román E, Serrano JA. Conjugated nitrodienes. Synthesis and reactivity. Chem Rev 2013; 113:3493-515. [PMID: 23308356 DOI: 10.1021/cr2002195] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roberto Ballini
- School of Science and Technology, Chemistry Division, via S. Agostino 1, I-62032 Camerino, Italy
| | | | | | | | | |
Collapse
|
35
|
Jaiswal PK, Biswas S, Singh S, Pathak B, Mobin SM, Samanta S. Stereoselective synthesis of highly functionalized tetrahydrocarbazoles through a domino Michael–Henry reaction: an easy access to four contiguous chiral centers. RSC Adv 2013. [DOI: 10.1039/c3ra41409d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
|
36
|
Reddy BVS, Swain M, Reddy SM, Yadav JS. Enantioselective Michael addition of 2-hydroxy-1,4-naphthoquinone and 1,3-dicarbonyls to β-nitroalkenes catalyzed by a novel bifunctional rosin-indane amine thiourea catalyst. RSC Adv 2013. [DOI: 10.1039/c3ra40965a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
|
37
|
Ebru Aydin A, Yuksekdanaci S. Asymmetric Henry reactions catalyzed by metal complexes of chiral oxazoline based ligands. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2012.11.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
38
|
Tsakos M, Elsegood MRJ, Kokotos CG. Organocatalytic asymmetric domino Michael–Henry reaction for the synthesis of substituted bicyclo[3.2.1]octan-2-ones. Chem Commun (Camb) 2013; 49:2219-21. [DOI: 10.1039/c3cc39165e] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
39
|
Dai Q, Arman H, Zhao JCG. One-pot sequential organocatalysis: highly stereoselective synthesis of trisubstituted cyclohexanols. Chemistry 2012; 19:1666-71. [PMID: 23238781 DOI: 10.1002/chem.201203104] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Indexed: 12/24/2022]
Abstract
A highly diastereoselective (d.r. >99:1) and enantioselective (ee value up to 96%) synthesis of trisubstituted cyclohexanols was achieved by using a one-pot sequential organocatalysis that involved a quinidine thiourea-catalyzed tandem Henry-Michael reaction between nitromethane and 7-oxo-hept-5-en-1-als followed by a tetramethyl guanidine (TMG)-catalyzed tandem retro-Henry-Henry reaction on the reaction products of the tandem Henry-Michael reaction. Through a mechanistic study, it has also been demonstrated that similar results may also be achieved with this one-pot sequential organocatalysis by using the racemic Henry product as the substrate.
Collapse
Affiliation(s)
- Qipu Dai
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
| | | | | |
Collapse
|
40
|
Mailhol D, Duque MDMS, Raimondi W, Bonne D, Constantieux T, Coquerel Y, Rodriguez J. Enantioselective Organocatalytic Michael Addition of Cyclobutanones to Nitroalkenes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200658] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
41
|
Melchiorre P. Katalyse mit primären Cinchona-Aminen zur asymmetrischen Funktionalisierung von Carbonylverbindungen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201109036] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
42
|
Melchiorre P. Cinchona-based primary amine catalysis in the asymmetric functionalization of carbonyl compounds. Angew Chem Int Ed Engl 2012; 51:9748-70. [PMID: 22893602 DOI: 10.1002/anie.201109036] [Citation(s) in RCA: 362] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Indexed: 12/21/2022]
Abstract
Asymmetric aminocatalysis exploits the potential of chiral primary and secondary amines to catalyze asymmetric reactions. It has greatly simplified the functionalization of carbonyl compounds while ensuring high enantioselectivity. Recent advances in cinchona-based primary amine catalysis have provided new synthetic opportunities and conceptual perspectives for successfully attacking major challenges in carbonyl compound chemistry, which traditional approaches have not been able to address. This Review outlines the historical context for the development of this catalyst class while charting the landmark discoveries and applications that have further expanded the synthetic potential of aminocatalysis.
Collapse
Affiliation(s)
- Paolo Melchiorre
- ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, Barcelona, Spain.
| |
Collapse
|
43
|
Yang H, Banerjee S, Carter RG. Proline sulphonamide-catalysed Yamada-Otani condensation: reaction development, substrate scope and scaffold reactivity. Org Biomol Chem 2012; 10:4851-63. [PMID: 22544220 DOI: 10.1039/c2ob25400j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of a proline sulphonamide-catalysed method for enantioselective and diastereoselective construction of functionalized cyclohexenones is described. Impact of catalyst structure as well as solvent effects and additives are explored. A significant substrate scope is demonstrated by variation of both the aldehyde and the enone components. Diastereoselective derivatization of the cyclohexenone scaffold illustrates its utility as a building block for chemical synthesis.
Collapse
Affiliation(s)
- Hua Yang
- College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | | | | |
Collapse
|
44
|
Cai Q, You SL. Organocatalyzed Enantioselective Formal [4 + 2] Cycloaddition of 2,3-Disubstituted Indole and Methyl Vinyl Ketone. Org Lett 2012; 14:3040-3. [DOI: 10.1021/ol301114z] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Quan Cai
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| |
Collapse
|
45
|
Mao Z, Jia Y, Xu Z, Wang R. Asymmetric Organocatalytic Cascade Michael/Michael/Henry Reaction Sequence: Control of All Stereocenters in One Cyclohexane Skeleton. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200008] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
46
|
Enders D, Urbanietz G, Cassens-Sasse E, Keeß S, Raabe G. Control of Six Contiguous Stereocenters in an Asymmetric Organocatalytic One-Pot Michael/Michael/Aldol Addition Sequence. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200120] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
47
|
Tan B, Hernández-Torres G, Barbas CF. Rationally Designed Amide Donors for Organocatalytic Asymmetric Michael Reactions. Angew Chem Int Ed Engl 2012; 51:5381-5. [DOI: 10.1002/anie.201200996] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Indexed: 11/09/2022]
|
48
|
Tan B, Hernández-Torres G, Barbas CF. Rationally Designed Amide Donors for Organocatalytic Asymmetric Michael Reactions. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200996] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
49
|
Shi D, Xie Y, Zhou H, Xia C, Huang H. A Highly Diastereo- and Enantioselective Reaction for Constructing Functionalized Cyclohexanes: Six Contiguous Stereocenters in One Step. Angew Chem Int Ed Engl 2011; 51:1248-51. [DOI: 10.1002/anie.201107495] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Indexed: 12/26/2022]
|
50
|
Shi D, Xie Y, Zhou H, Xia C, Huang H. A Highly Diastereo- and Enantioselective Reaction for Constructing Functionalized Cyclohexanes: Six Contiguous Stereocenters in One Step. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107495] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|