1
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Vopálenská A, Dočekal V, Petrželová S, Císařová I, Veselý J. Access to Spirooxindole-Fused Cyclopentanes via a Stereoselective Organocascade Reaction Using Bifunctional Catalysis. J Org Chem 2023. [PMID: 36705518 DOI: 10.1021/acs.joc.2c02478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The present study reports an asymmetric organocascade reaction of oxindole-derived alkenes with 3-bromo-1-nitropropane efficiently catalyzed by the bifunctional catalyst. Spirooxindole-fused cyclopentanes were produced in moderate-to-good isolated yields (15-69%) with excellent stereochemical outcomes. The synthetic utility of the protocol was exemplified on a set of additional transformations of the corresponding spirooxindole compounds.
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Affiliation(s)
- Andrea Vopálenská
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Vojtěch Dočekal
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Simona Petrželová
- Department of Teaching and Didactics of Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
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2
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Zhang D, Cheng Q, Chen L, Deng H, Cai H, Zhang QF. Lewis acid-catalyzed [3 + 2] annulations of oxindole based spirocyclic donor-acceptor cyclopropanes with ynamides. Org Biomol Chem 2021; 19:9645-9648. [PMID: 34730170 DOI: 10.1039/d1ob01922h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
[3 + 2] annulations of oxindole based spirocyclic donor-acceptor cyclopropanes and ynamides catalyzed by copper triflate have been developed for the synthesis of biologically important spirocyclopenteneoxindoles. These reactions tolerated a wide scope of substrates and provided the desired products in good to high yields (up to 90%) with up to >40 : 1 diastereoselectivities under mild conditions.
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Affiliation(s)
- Dongxin Zhang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, No. 59 Hudong Road, Ma'anshan 243002, China.
| | - Qihang Cheng
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, No. 59 Hudong Road, Ma'anshan 243002, China.
| | - Lvjia Chen
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, No. 59 Hudong Road, Ma'anshan 243002, China.
| | - Huiqing Deng
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, No. 59 Hudong Road, Ma'anshan 243002, China.
| | - Hu Cai
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, No. 59 Hudong Road, Ma'anshan 243002, China.
| | - Qian-Feng Zhang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, No. 59 Hudong Road, Ma'anshan 243002, China.
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3
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Leng H, Zhao Q, Mao Q, Liu S, Luo M, Qin R, Huang W, Zhan G. NHC-catalysed retro-aldol/aldol cascade reaction enabling solvent-controlled stereodivergent synthesis of spirooxindoles. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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4
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Ghosh A, Biju AT. Revealing the Similarities of α,β-Unsaturated Iminiums and Acylazoliums in Organocatalysis. Angew Chem Int Ed Engl 2021; 60:13712-13724. [PMID: 33205860 DOI: 10.1002/anie.202012581] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Indexed: 01/05/2023]
Abstract
The secondary amine-catalyzed reactions proceeding via α,β-unsaturated iminiums and the N-heterocyclic carbene (NHC)-catalyzed transformations taking place via α,β-unsaturated acylazoliums are the two widely used electrophilic intermediates in organocatalysis. Over the last two decades, these two intermediates are extensively utilized for the enantioselective construction of valuable molecules. Both intermediates are generated by the covalent binding of catalysts to the substrates leading to LUMO activation of α,β-unsaturated carbonyls. A variety of soft nucleophiles are known to add to the α,β-unsaturated iminiums and acylazoliums in a conjugate fashion, and in many cases, striking similarity in reactivity has been observed. Having said this, there are few cases where these intermediates exhibit difference in reactivity. This Minireview is aimed at highlighting the resemblances in reactivity between α,β-unsaturated iminiums and acylazoliums thereby shedding light on the unnoticed parallels of the two intermediates in organocatalysis.
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Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
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5
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Ghosh A, Biju AT. Revealing the Similarities of α,β‐Unsaturated Iminiums and Acylazoliums in Organocatalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012581] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry Indian Institute of Science Bangalore 560012 India
| | - Akkattu T. Biju
- Department of Organic Chemistry Indian Institute of Science Bangalore 560012 India
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6
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Wang Y, Cobo AA, Franz AK. Recent advances in organocatalytic asymmetric multicomponent cascade reactions for enantioselective synthesis of spirooxindoles. Org Chem Front 2021. [DOI: 10.1039/d1qo00220a] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Catalytic asymmetric MCCRs for enantioselective synthesis of spirooxindoles by using chiral phosphoric acids, amines, bifunctional thiourea/squaramides and metal-based reagents as catalysts.
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Affiliation(s)
- Yongchao Wang
- Colleage of Vocational and Technical Education
- Yunnan Normal University
- Kunming 650092
- P. R. China
| | - Angel A. Cobo
- Department of Chemistry
- University of California
- Davis
- USA
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7
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Abstract
This review summaries recent synthetic developments towards spirocyclic oxindoles and applications as valuable medicinal and synthetic targets.
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Affiliation(s)
- Alexander J. Boddy
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
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8
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Mohammadi S, Naeimi H. Synthesis of Novel bis-Spirooxindoles Using Triethylamine as a Homogeneous Base Catalyst under Mild Conditions. ORG PREP PROCED INT 2020. [DOI: 10.1080/00304948.2020.1832945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Somaye Mohammadi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Hossein Naeimi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
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9
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Mukherjee S, Biswas B. Organo‐Cascade Catalysis: Application of Merged Iminium‐Enamine Activation Technique and Related Cascade Reactivities. ChemistrySelect 2020. [DOI: 10.1002/slct.202003070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shirshendu Mukherjee
- Department of Chemistry Hooghly Mohsin Govt. College Hooghly 712101, West Bengal India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Siliguri Darjeeling 734013, West Bengal India
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10
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Xu PW, Yu JS, Chen C, Cao ZY, Zhou F, Zhou J. Catalytic Enantioselective Construction of Spiro Quaternary Carbon Stereocenters. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03694] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Peng-Wei Xu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Chen Chen
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Zhong-Yan Cao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Feng Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, East China Normal University, Shanghai 200062, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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11
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Wang CC, Huang J, Li XH, Kramer S, Lin GQ, Sun XW. Asymmetric Organocatalytic [4 + 1] Annulations: Enantioselective Construction of Multifunctionalized Spirocyclopentane Oxindoles Bearing α,α-Disubstituted α-Amino-β-keto Esters. Org Lett 2018; 20:2888-2891. [DOI: 10.1021/acs.orglett.8b00927] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Chuan-Chuan Wang
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Jian Huang
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Xin-Hao Li
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Søren Kramer
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Guo-Qiang Lin
- Department of Chemistry, Fudan University, Shanghai 200433, China
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xing-Wen Sun
- Department of Chemistry, Fudan University, Shanghai 200433, China
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12
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Xu J, Pang J, Feng D, Ma X. Jorgensen–Hayashi organocatalyst/Brønsted acid-tethered multifunctional polymeric nanospheres for complex asymmetric multicomponent/multicatalysed organocatalysis: Heterogeneous Michael/Michael/aldol organocascade and [4+2] cycloaddition reactions. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.09.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Chaudhari PD, Hong BC, Lee GH. Organocatalytic Enantioselective Michael–Michael–Michael–Aldol Condensation Reactions: Control of Six Stereocenters in a Quadruple-Cascade Asymmetric Synthesis of Polysubstituted Spirocyclic Oxindoles. Org Lett 2017; 19:6112-6115. [DOI: 10.1021/acs.orglett.7b02962] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prakash D. Chaudhari
- 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
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14
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Zhang J, Cheng C, Wang D, Miao Z. Regio- and Diastereoselective Construction of Spirocyclopenteneoxindoles through Phosphine-Catalyzed [3 + 2] Annulation of Methyleneindolinone with Alkynoate Derivatives. J Org Chem 2017; 82:10121-10128. [DOI: 10.1021/acs.joc.7b01582] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jiayong Zhang
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, College
of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Cheng Cheng
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, College
of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Dian Wang
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, College
of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Zhiwei Miao
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, College
of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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15
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Du Y, Li J, Chen K, Wu C, Zhou Y, Liu H. Construction of highly enantioenriched spirocyclopentaneoxindoles containing four consecutive stereocenters via thiourea-catalyzed asymmetric Michael-Henry cascade reactions. Beilstein J Org Chem 2017; 13:1342-1349. [PMID: 28781700 PMCID: PMC5530720 DOI: 10.3762/bjoc.13.131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/21/2017] [Indexed: 01/28/2023] Open
Abstract
The thiourea-catalyzed asymmetric synthesis of highly enantioenriched spirocyclopentaneoxindoles containing chiral amide functional groups using simple 3-substituted oxindoles and nitrovinylacetamide as starting materials was achieved successfully. This protocol features operational simplicity, high atom economy, and high catalytic asymmetry, thus representing a versatile approach to the synthesis of highly enantioenriched spirocyclopentaneoxindoles.
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Affiliation(s)
- Yonglei Du
- Nano Science and Technology Institute, University of Science and Technology of China, 166 Ren Ai Road, Suzhou 215123, China
| | - Jian Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Kerong Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Chenglin Wu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences, NO.19A Yuquan Road, Beijing 100049, China
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16
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Suman K, Ramanjaneyulu M, Thennarasu S. Diastereoselective tandem oxidation/Michael/aldol reaction: unprecedented formation of dispirocyclopentanebisoxindoles and dispiro[acenaphthylene-1,1'-cyclopentane-3',1''-acenaphthylene]-2,2''diones. Org Biomol Chem 2017; 15:1961-1964. [PMID: 28177006 DOI: 10.1039/c6ob02607a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An unprecedented tandem oxidation/Michael/aldol reaction is reported. The diastereoselective formation of only a single isomer of dispirocyclopentanebisoxindole and dispiro[acenaphthylene-1,1'-cyclopentane-3',1''-acenaphthylene]-2,2''dione is presented. The reaction generates two new C-C bonds and two all-carbon quaternary chiral stereocenters in a single step.
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Affiliation(s)
- Koorathota Suman
- Organic and Bioorganic Chemistry Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, Tamilnadu, India-600020.
| | - Mala Ramanjaneyulu
- Organic and Bioorganic Chemistry Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, Tamilnadu, India-600020. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bahavan, 2 Rafi Marg, New Delhi-110001, India
| | - Sathiah Thennarasu
- Organic and Bioorganic Chemistry Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, Tamilnadu, India-600020. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bahavan, 2 Rafi Marg, New Delhi-110001, India
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17
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Ren W, Wang XY, Li JJ, Tian M, Liu J, Ouyang L, Wang JH. Efficient construction of biologically important functionalized polycyclic spiro-fused carbocyclicoxindoles via an asymmetric organocatalytic quadruple-cascade reaction. RSC Adv 2017. [DOI: 10.1039/c6ra24910h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A cascade organocatalysis has been developed for the asymmetric synthesis of a highly functionalized polycyclic spiro-fused carbocyclicoxindoles containing five contiguous stereogenic centers with good diastereoselectivity and high enantioselectivity.
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Affiliation(s)
- Wen Ren
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University
- Collaborative Innovation Center for Biotherapy
- Chengdu 610041
| | - Xiao-Yan Wang
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Jing-Jing Li
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University
- Collaborative Innovation Center for Biotherapy
- Chengdu 610041
| | - Mao Tian
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University
- Collaborative Innovation Center for Biotherapy
- Chengdu 610041
| | - Jie Liu
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University
- Collaborative Innovation Center for Biotherapy
- Chengdu 610041
| | - Liang Ouyang
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University
- Collaborative Innovation Center for Biotherapy
- Chengdu 610041
| | - Jin-Hui Wang
- College of Pharmacy
- Xinjiang Medical University
- Urumqi 830011
- China
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18
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Zhang J, Cao D, Wang H, Zheng C, Zhao G, Shang Y. Enantioselective Construction of Spirocyclic Oxindoles via Tandem Michael/Michael Reactions Catalyzed by Multifunctional Quaternary Phosphonium Salt. J Org Chem 2016; 81:10558-10568. [DOI: 10.1021/acs.joc.6b01553] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiaxing Zhang
- The
Key Laboratory of Functional Molecular Solids, Ministry of Education,
Anhui Laboratory of Molecule-Based Materials, College of Chemistry
and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Dongdong Cao
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Hongyu Wang
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Changwu Zheng
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Gang Zhao
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yongjia Shang
- The
Key Laboratory of Functional Molecular Solids, Ministry of Education,
Anhui Laboratory of Molecule-Based Materials, College of Chemistry
and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
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19
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Tian L, Luo YC, Hu XQ, Xu PF. Recent Developments in the Synthesis of Chiral Compounds with Quaternary Centers by Organocatalytic Cascade Reactions. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201500486] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Li Tian
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
| | - Xiu-Qin Hu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
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20
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Huang H, Bihani M, Zhao JCG. Stereoselective synthesis of spirooxindole derivatives using an organocatalyzed tandem Michael–Michael reaction. Org Biomol Chem 2016; 14:1755-63. [DOI: 10.1039/c5ob02348c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient and stereoselective method for the synthesis of functionalized spirooxindole derivatives was realized using enamine catalysis.
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Affiliation(s)
- Huicai Huang
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - Manisha Bihani
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - John C.-G. Zhao
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
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21
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Pratap Reddy Gajulapalli V, Lokesh K, Vishwanath M, Kesavan V. Organocatalytic construction of spirooxindole naphthoquinones through Michael/hemiketalization usingl-proline derived bifunctional thiourea. RSC Adv 2016. [DOI: 10.1039/c5ra25025k] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Michael/hemiketalization of 2-hydroxy-1,4-naphthoquinone to oxindole ketoester was studied using a series of chiral bifunctional organocatalysts.
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Affiliation(s)
- V. Pratap Reddy Gajulapalli
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
| | - Kanduru Lokesh
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
| | - Manjunatha Vishwanath
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
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22
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Pavlovska TL, Redkin RG, Lipson VV, Atamanuk DV. Molecular diversity of spirooxindoles. Synthesis and biological activity. Mol Divers 2015; 20:299-344. [PMID: 26419598 DOI: 10.1007/s11030-015-9629-8] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 07/29/2015] [Indexed: 11/30/2022]
Abstract
Spirooxindoles are important synthetic targets possessing extended biological activity and drug discovery applications. This review focuses on the various strategies for the enantioselective synthesis of spirocyclic oxindoles relying on reports over the past decade and from earlier work. The spirooxindoles in this review are separated into three structural classes, and then further categorized into the method type from which the spirocycle is generated.
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Affiliation(s)
- Tetyana L Pavlovska
- State Scientific Institution, "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Lenina Pr., 60, Kharkov, 61002, Ukraine.
| | - Ruslan Gr Redkin
- National University of Pharmacy, Pushkinska Str., 53, Kharkov, 61002, Ukraine.
| | - Victoria V Lipson
- State Scientific Institution, "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Lenina Pr., 60, Kharkov, 61002, Ukraine. .,State Institution "V.Ya. Danilevsky Institute of Endocrine Pathology Problems", Academy of Medical Sciences of Ukraine, Artema Str., 10, Kharkov, 61002, Ukraine.
| | - Dmytro V Atamanuk
- Dmytro Atamanyuk Mutabilis, 102 Av. Gaston Roussel, Romainville, 93230, France.
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23
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Organocatalytic Enantioselective Synthesis of Polysubstituted Spirooxindoles using a Tandem Michael-Michael Reaction. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500298] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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24
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Monari M, Montroni E, Nitti A, Lombardo M, Trombini C, Quintavalla A. Highly stereoselective [4+2] and [3+2] spiroannulations of 2-(2-oxoindolin-3-ylidene)acetic esters catalyzed by bifunctional thioureas. Chemistry 2015; 21:11038-49. [PMID: 26032428 DOI: 10.1002/chem.201500676] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Indexed: 11/11/2022]
Abstract
A new Michael-Michael cascade reaction between 2-(2-oxoindolin-3-ylidene)acetic esters 1 and nitroenoates 2, catalyzed by bifunctional thioureas, is investigated. The combination of the two Michael reactions results in a novel and facile [4+2] or [3+2] spiroannulation process, which is characterized by the following features: 1) two carbon-carbon bonds and four stereocenters, including a quaternary spiro carbon, are formed under mild conditions; 2) an unprecedented and stereochemically defined substitution pattern on the spirocarbocyclic unit is obtained; 3) the double-bond configuration of the donor-acceptor nitroenoate 2 determines the absolute configuration of the spiro center, whereas the remaining stereocenters are formed under control of the catalyst. The effect on the final stereochemical outcome of structural variations of each starting material, catalyst, and experimental conditions is analyzed in detail. In particular, the use of specifically designed chiral nitroenoates enables diverse polyfunctional spirocyclohexane derivatives containing six consecutive stereogenic centers to be constructed. To our knowledge, this is the first asymmetric organocatalytic strategy enabling both five- and six-membered β-nitro spirocarbocyclic oxindoles.
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Affiliation(s)
- Magda Monari
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Elisa Montroni
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Andrea Nitti
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Marco Lombardo
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Claudio Trombini
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Arianna Quintavalla
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy).
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25
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Zhao HW, Li B, Tian T, Meng W, Yang Z, Song XQ, Chen XQ, Pang HL. Highly Enantioselective Synthesis of Chiral Pyranonaphthoquinone-Fused Spirooxindoles through Organocatalytic Three-Component Cascade Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500152] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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26
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Theoretical study of the mechanism of highly diastereoselective formation of a strained 3-azabicyclo[3.2.0]heptane derivative. J Mol Model 2015; 21:86. [PMID: 25773701 DOI: 10.1007/s00894-015-2636-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 02/22/2015] [Indexed: 10/23/2022]
Abstract
The mechanism of multicomponent reactions, especially stereoselective ones is of special importance in organic synthesis. The mechanism of diastereoselective formation of a highly strained 3-azabicyclo[3.2.0]heptane derivative through a catalyst-free multistep reaction is studied by DFT calculations in solution phase. The calculations on the two proposed mechanisms (pathways A and B) showed that the iminium ion, the relatively high energy species is not the approprite reaction intermediate. On the other hand, the lower activation energy of pathway B, as compared to that of pathway A, makes it as the preferred mechanism. The high stereoselectivity of the stepwise reaction may be attributed to the fact that the rate limiting and stereodifferentiating steps are the same. These findings may also account the formation of by-product in the experimental observations.
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27
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Afewerki S, Ma G, Ibrahem I, Liu L, Sun J, Córdova A. Highly Enantioselective Control of Dynamic Cascade Transformations by Dual Catalysis: Asymmetric Synthesis of Polysubstituted Spirocyclic Oxindoles. ACS Catal 2015. [DOI: 10.1021/cs501975u] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Samson Afewerki
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
| | - Guangning Ma
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
| | - Ismail Ibrahem
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
| | | | | | - Armando Córdova
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
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28
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Khalafi-Nezhad A, Divar M, Panahi F. Magnetic nanoparticles-supported tungstic acid (MNP-TA): an efficient magnetic recyclable catalyst for the one-pot synthesis of spirooxindoles in water. RSC Adv 2015. [DOI: 10.1039/c4ra12976h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper reports the preparation, characterization and catalytic application of a novel, magnetically separable catalyst consisting of tungstic acid supported on silica coated magnetic nanoparticles.
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Affiliation(s)
- Ali Khalafi-Nezhad
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Masoumeh Divar
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Farhad Panahi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
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29
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Arulananda Babu S, Padmavathi R, Ahmad Aslam N, Rajkumar V. Recent Developments on the Synthesis and Applications of Natural Products-Inspired Spirooxindole Frameworks. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63462-7.00008-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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30
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31
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Zhou J, Wang QL, Peng L, Tian F, Xu XY, Wang LX. An organocatalytic domino Michael-alkylation reaction: highly enantioselective construction of spiro-cyclopentanoneoxindoles and tetronic acid scaffolds. Chem Commun (Camb) 2014; 50:14601-4. [DOI: 10.1039/c4cc05207b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Madhavachary R, Ramachary DB. High-Yielding Total Synthesis of Sexually Deceptive Chiloglottones and Antimicrobial Dialkylresorcinols through an Organocatalytic Reductive Coupling Reaction. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403128] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Lombardo M, Cerisoli L, Manoni E, Montroni E, Quintavalla A, Trombini C. Properties and Reactivity of Conformationally Constrained Bicyclic Diarylprolinol Silyl Ethers as Organocatalysts. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402732] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Ding LZ, Zhong TS, Wu H, Wang YM. Highly Enantioselective Construction of Spirocyclopentaneoxindoles Containing Four Consecutive Stereocenters through an Organocatalytic Iminium-Enamine Cascade Reaction. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402687] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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35
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Ramachary DB, Reddy PS, Prasad MS. Neighboringortho-Hydroxy Group Directed Catalytic Asymmetric Triple Domino Reactions of Acetaldehyde with (E)-2-(2-Nitrovinyl)phenols. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402182] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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36
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Cheng D, Ishihara Y, Tan B, Barbas CF. Organocatalytic Asymmetric Assembly Reactions: Synthesis of Spirooxindoles via Organocascade Strategies. ACS Catal 2014. [DOI: 10.1021/cs401172r] [Citation(s) in RCA: 673] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Daojuan Cheng
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, People’s Republic of China
| | - Yoshihiro Ishihara
- The
Skaggs Institute for Chemical Biology and Departments of Chemistry
and Cell and Molecular Biology, The Scripps Research Institute, 10550
North Torrey Pines Road, La Jolla, California 92037, United States
| | - Bin Tan
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, People’s Republic of China
- The
Skaggs Institute for Chemical Biology and Departments of Chemistry
and Cell and Molecular Biology, The Scripps Research Institute, 10550
North Torrey Pines Road, La Jolla, California 92037, United States
| | - Carlos F. Barbas
- The
Skaggs Institute for Chemical Biology and Departments of Chemistry
and Cell and Molecular Biology, The Scripps Research Institute, 10550
North Torrey Pines Road, La Jolla, California 92037, United States
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37
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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
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38
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Quintavalla A, Lanza F, Montroni E, Lombardo M, Trombini C. Organocatalytic Conjugate Addition of Nitroalkanes to 3-Ylidene Oxindoles: A Stereocontrolled Diversity Oriented Route to Oxindole Derivatives. J Org Chem 2013; 78:12049-64. [DOI: 10.1021/jo402099p] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Francesco Lanza
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Elisa Montroni
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
- Consorzio Interuniversitario “CINMPIS”, V. Orabona 4, 70125 Bari, Italy
| | - Marco Lombardo
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Claudio Trombini
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
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39
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Dong N, Li X, Wang F, Cheng JP. Asymmetric Michael-Aldol Tandem Reaction of 2-Substituted Benzofuran-3-ones and Enones: A Facile Synthesis of Griseofulvin Analogues. Org Lett 2013; 15:4896-9. [DOI: 10.1021/ol402346c] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nan Dong
- State-key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xin Li
- State-key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Feng Wang
- State-key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jin-Pei Cheng
- State-key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
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40
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Noole A, Ilmarinen K, Järving I, Lopp M, Kanger T. Asymmetric Synthesis of Congested Spiro-cyclopentaneoxindoles via an Organocatalytic Cascade Reaction. J Org Chem 2013; 78:8117-22. [DOI: 10.1021/jo4008223] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Artur Noole
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Kaja Ilmarinen
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Ivar Järving
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Margus Lopp
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Tõnis Kanger
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
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41
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Jiang X, Tan B, Barbas CF. Core-structure-motivated design of iminium-enolate organocascade reactions: enantioselective syntheses of 5,6-dihydroindolizines. Angew Chem Int Ed Engl 2013; 52:9261-5. [PMID: 23843168 DOI: 10.1002/anie.201303300] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/18/2013] [Indexed: 01/01/2023]
Affiliation(s)
- Xianxing Jiang
- The Skaggs Institute for Chemical Biology and the Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
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42
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Jiang X, Tan B, Barbas CF. Core‐Structure‐Motivated Design of Iminium–Enolate Organocascade Reactions: Enantioselective Syntheses of 5,6‐Dihydroindolizines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303300] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xianxing Jiang
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA)
| | - Bin Tan
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA)
| | - Carlos F. Barbas
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA)
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43
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Hu C, Zhang Q, Huang Y. Phosphine-Catalyzed Rauhut-Currier Domino Reaction: A Facile Strategy for the Construction of Carbocyclic Spirooxindoles Skeletons. Chem Asian J 2013; 8:1981-4. [DOI: 10.1002/asia.201300650] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/04/2013] [Indexed: 12/15/2022]
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44
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Albertshofer K, Tan B, Barbas CF. Asymmetric Construction of Spirocyclopentenebenzofuranone Core Structures via Highly Selective Phosphine-Catalyzed [3 + 2] Cycloaddition Reactions. Org Lett 2013; 15:2958-61. [DOI: 10.1021/ol401087a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Klaus Albertshofer
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Bin Tan
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Carlos F. Barbas
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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45
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Tian X, Melchiorre P. Control of Remote Stereochemistry in the Synthesis of Spirocyclic Oxindoles: Vinylogous Organocascade Catalysis. Angew Chem Int Ed Engl 2013; 52:5360-3. [DOI: 10.1002/anie.201301017] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/05/2013] [Indexed: 12/18/2022]
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46
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Tian X, Melchiorre P. Control of Remote Stereochemistry in the Synthesis of Spirocyclic Oxindoles: Vinylogous Organocascade Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301017] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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47
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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.
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Affiliation(s)
- Sundaram Rajkumar
- School of Chemistry, Food and Pharmacy, University of Reading, Whiteknights, Reading, Berks RG6 6AD, UK
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