1
|
Yu W, Song J, Yu SY, Kim J. Cyclocarbonylation of Allenyl Glyoxylate Strategy to Build the Tricyclic Core of Cyclocalopin A. Org Lett 2022; 24:2242-2247. [PMID: 35297249 DOI: 10.1021/acs.orglett.2c00625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An approach for the construction of the tricyclic framework of naturally occurring cyclocalopin A is described. The establishment of the crucial intermediate α-methylene bis-γ,δ-lactone involves a [2 + 2 + 1]-cyclocarbonylation of newly introduced allenyl glyoxylate via direct methods using Mo(CO)6 or sequential reaction pathways. The sequential reaction route involved a stannylative cyclization by Pd(0) catalyst, bromination of an vinyl stannane moiety, and final cyclocarbonylation by palladium catalysis to provide the bis-γ,δ-lactone. The feasibility of forming the spiro-system by an exo-selective [4 + 2]-cycloaddition was accomplished.
Collapse
Affiliation(s)
- Weonju Yu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| | - Jieun Song
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| | - Suh Young Yu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| | - Jimin Kim
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| |
Collapse
|
2
|
Bai X, Qian L, Zhang HH, Yu S. Enantioselective Radical S N2-Type Alkylation of Morita-Baylis-Hillman Adducts Using Dual Photoredox/Palladium Catalysis. Org Lett 2021; 23:8322-8326. [PMID: 34672603 DOI: 10.1021/acs.orglett.1c03064] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An enantioselective radical alkylation of 4-alkyl-1,4-dihydropyridines with Morita-Baylis-Hillman (MBH) adducts has been reported. The SN2-type products are predominant. This reaction is enabled by dual photoredox/palladium catalysis. The alkylation products are provided in good yields with good regio- and enantioselectivity. The use of Ding's spiroketal-based bis(phosphine) (SKP) ligand is crucial to achieving satisfactory regio- and enantioselectivity. The resultant α,β-unsaturated ester can be easily reduced to a synthetically useful chiral allyl alcohol.
Collapse
Affiliation(s)
- Xiangbin Bai
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Linlin Qian
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong-Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| |
Collapse
|
3
|
Liu W, Winssinger N. Synthesis of α-exo-Methylene-γ-butyrolactones: Recent Developments and Applications in Natural Product Synthesis. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1577-6085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe α-exo-methylene-γ-butyrolactone moiety is present in a vast array of structurally diverse natural products and is often central to their biological activity. In this short review, we summarize new approaches to α-exo-methylene-γ-butyrolactones developed over the past decade as well as their applications in total synthesis.1 Introduction2 Approaches to α-exo-Methylene-γ-butyrolactones2.1 Enantioselective Synthesis via Lactonization Approaches2.2 Enantioselective Halolactonizations2.3 Enantioselective Barbier-Type Allylation2.4 C–H Insertion/Olefination Sequences2.5 Alkene Cyclization2.6 Strain-Driven Dyotropic Rearrangement3 β-(Hydroxymethylalkyl)-α-exo-methylene-γ-butyrolactones4 Applications in Total Synthesis4.1 Sesquiterpene Lactones4.2 Lignans4.3 Other Monocyclic Natural Products4.4 Choice of Methodology in Recent Total Syntheses5 Summary and Outlook
Collapse
|
4
|
Han B, He XH, Liu YQ, He G, Peng C, Li JL. Asymmetric organocatalysis: an enabling technology for medicinal chemistry. Chem Soc Rev 2021; 50:1522-1586. [PMID: 33496291 DOI: 10.1039/d0cs00196a] [Citation(s) in RCA: 162] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The efficacy and synthetic versatility of asymmetric organocatalysis have contributed enormously to the field of organic synthesis since the early 2000s. As asymmetric organocatalytic methods mature, they have extended beyond the academia and undergone scale-up for the production of chiral drugs, natural products, and enantiomerically enriched bioactive molecules. This review provides a comprehensive overview of the applications of asymmetric organocatalysis in medicinal chemistry. A general picture of asymmetric organocatalytic strategies in medicinal chemistry is firstly presented, and the specific applications of these strategies in pharmaceutical synthesis are systematically described, with a focus on the preparation of antiviral, anticancer, neuroprotective, cardiovascular, antibacterial, and antiparasitic agents, as well as several miscellaneous bioactive agents. The review concludes with a discussion of the challenges, limitations and future prospects for organocatalytic asymmetric synthesis of medicinally valuable compounds.
Collapse
Affiliation(s)
- Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yan-Qing Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. and Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
| |
Collapse
|
5
|
Xu JX, Chu KT, Chiang MH, Han JL. Organocatalytic asymmetric allylic alkylation of 2-methyl-3-nitroindoles: a route to direct enantioselective functionalization of indole C(sp 3)-H bonds. Org Biomol Chem 2021; 19:1503-1507. [PMID: 33533776 DOI: 10.1039/d1ob00048a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We here described a direct catalytic asymmetric functionalization of 2-methylindoles using organocatalysis. An efficient asymmetric allylic alkylation reaction with respect to 2-methyl-3-nitroindoles and racemic Morita-Baylis-Hillman carbonate has been achieved by using a chiral biscinchona alkaloid catalyst, which provided the functionalized indole derivatives in good yields and enantioselectivities.
Collapse
Affiliation(s)
- Jing-Xiang Xu
- Department of Chemistry, National Chung Hsing University, Taichung City, 40227, Taiwan, Republic of China.
| | - Kai-Ti Chu
- Institute of Chemistry, Academia Sinica, Taipei City, 11529, Taiwan, Republic of China
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Taipei City, 11529, Taiwan, Republic of China
| | - Jeng-Liang Han
- Department of Chemistry, National Chung Hsing University, Taichung City, 40227, Taiwan, Republic of China.
| |
Collapse
|
6
|
Lei X, Li Y, Lai Y, Hu S, Qi C, Wang G, Tang Y. Strain‐Driven Dyotropic Rearrangement: A Unified Ring‐Expansion Approach to α‐Methylene‐γ‐butyrolactones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoqiang Lei
- School of Pharmaceutical Sciences MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Tsinghua University Beijing 100084 China
| | - Yuanhe Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) College of Chemistry Peking University Beijing 100871 China
| | - Yang Lai
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) College of Chemistry Peking University Beijing 100871 China
| | - Shengkun Hu
- School of Pharmaceutical Sciences MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Tsinghua University Beijing 100084 China
| | - Chen Qi
- School of Pharmaceutical Sciences MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Tsinghua University Beijing 100084 China
| | - Gelin Wang
- School of Pharmaceutical Sciences MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Tsinghua University Beijing 100084 China
| | - Yefeng Tang
- School of Pharmaceutical Sciences MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Tsinghua University Beijing 100084 China
| |
Collapse
|
7
|
Lei X, Li Y, Lai Y, Hu S, Qi C, Wang G, Tang Y. Strain-Driven Dyotropic Rearrangement: A Unified Ring-Expansion Approach to α-Methylene-γ-butyrolactones. Angew Chem Int Ed Engl 2020; 60:4221-4230. [PMID: 33155345 DOI: 10.1002/anie.202013169] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Indexed: 12/16/2022]
Abstract
An unprecedented strain-driven dyotropic rearrangement of α-methylene-β-lactones has been realized, which enables the efficient access of a wide range of α-methylene-γ-butyrolactones displaying remarkable structural diversity. Several appealing features of the reaction, including excellent efficiency, high stereospecificity, predictable chemoselectivity and broad substrate scope, render it a powerful tool for the synthesis of MBL-containing molecules of either natural or synthetic origin. Both experimental and computational evidences suggest that the new variant of dyotropic rearrangements proceed in a dualistic pattern: while an asynchronous concerted mechanism most likely accounts for the reactions featuring hydrogen migration, a stepwise process involving a phenonium ion intermediate is favored in the cases of aryl migration. The great synthetic potential of the title reaction is exemplified by its application to the efficient construction of several natural products and relevant scaffolds.
Collapse
Affiliation(s)
- Xiaoqiang Lei
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Yuanhe Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing, 100871, China
| | - Yang Lai
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing, 100871, China
| | - Shengkun Hu
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Chen Qi
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Gelin Wang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| |
Collapse
|
8
|
Paria S, Carletti E, Marcon M, Cherubini-Celli A, Mazzanti A, Rancan M, Dell'Amico L, Bonchio M, Companyó X. Light-Triggered Catalytic Asymmetric Allylic Benzylation with Photogenerated C-Nucleophiles. J Org Chem 2020; 85:4463-4474. [PMID: 32081000 PMCID: PMC7997570 DOI: 10.1021/acs.joc.0c00175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
![]()
Herein
is reported the asymmetric allylic benzylation of Morita–Baylis–Hillman
(MBH) carbonates with 2-methylbenzophenone (MBP) derivatives as nonstabilized
photogenerated C-nucleophiles. The dual activation
of both reaction partners, chiral Lewis-base activation of the electrophile
and light activation of the nucleophile, enables the stereoselective
installation of benzyl groups at the allylic position to forge tertiary
and quaternary carbon centers.
Collapse
Affiliation(s)
- Suva Paria
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Edoardo Carletti
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Michela Marcon
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | | | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, viale del Risorgimento 4, 40136 Bologna, Italy
| | - Marzio Rancan
- ICMATE-CNR, Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Luca Dell'Amico
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Marcella Bonchio
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Xavier Companyó
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| |
Collapse
|
9
|
He H, Liu Z, Wang W, Jiang X. Synthesis and cytotoxic evaluation of halogenated α-exo-methylene-lactones. Bioorg Med Chem 2020; 28:115281. [PMID: 31889606 DOI: 10.1016/j.bmc.2019.115281] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 12/03/2019] [Accepted: 12/18/2019] [Indexed: 11/26/2022]
Abstract
α-exo-Methylene-γ-butyrolactones and α-exo-methylene-δ-valerolactones constitute an important group of natural and bioactive products. A simple and general protocol of halolactonization of dienoic acids to obtain various α-exo-methylene-lactones in excellent yields is described. The resulting halogenated α-exo-methylene-lactones were found to exhibit potent cytotoxic activities.
Collapse
Affiliation(s)
- Haoquan He
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Zheng Liu
- Foshan Stomatology Hospital, School of Stomatology and Medicine, Foshan University, Foshan 528000, China
| | - Wei Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China.
| |
Collapse
|
10
|
Wang W, He H, Gan M, Wang H, Wang Y, Jiang X. Enantioselective Syntheses of α‐
exo
‐Methylene‐Lactones via Organocatalytic Halolactonization. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900728] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Haoquan He
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Min Gan
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Haitao Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Yuqiang Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| |
Collapse
|
11
|
Mahto P, Rana NK, Shukla K, Das BG, Joshi H, Singh VK. Asymmetric Multifunctional Modular Organocatalysis: One-Pot Direct Strategy to Enantiopure α,β-Disubstituted γ-Butyrolactones. Org Lett 2019; 21:5962-5966. [PMID: 31322898 DOI: 10.1021/acs.orglett.9b02094] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A simple and efficient approach to enantioenriched α,β-disubstituted γ-butyrolactones has been developed through multifunctional modular organocatalysis in a highly enantioselective (>99% ee) and diastereoselective (>30:1) manner following a one-pot sequential Michael-hemiacetalization-oxidation reaction. The catalytic process has great substrate compatibility, and the products have been transformed to synthetically useful molecules. The methodology has also been applied to the formal synthesis of (+)-Pilocarpine.
Collapse
Affiliation(s)
- Pratibha Mahto
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Nirmal K Rana
- Department of Chemistry , Indian Institute of Technology Jodhpur , Jodhpur - 342 037 , Rajasthan , India
| | - Khyati Shukla
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Braja G Das
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Harshit Joshi
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Vinod K Singh
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| |
Collapse
|
12
|
Xu T, Wang D, Liu W, Tong X. Phosphine-Promoted Divergent Annulations of δ-Acetoxy Allenoates with α-Hydroxy-β-carbonyl Ester Derivatives: Synthesis of Tetrasubstituted Cyclopentadienes and Benzenes. Org Lett 2019; 21:1944-1947. [DOI: 10.1021/acs.orglett.8b03808] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Tong Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou 213164, China
| | - Dong Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou 213164, China
| | - Wei Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou 213164, China
| | - Xiaofeng Tong
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou 213164, China
| |
Collapse
|
13
|
Lv XJ, Chen YH, Liu YK. Two Competitive but Switchable Organocatalytic Cascade Reaction Pathways: The Diversified Synthesis of Chiral Acetal-Containing Bridged Cyclic Compounds. Org Lett 2018; 21:190-195. [PMID: 30576161 DOI: 10.1021/acs.orglett.8b03654] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The organocatalytic enantioselective synthesis of methanobenzodioxepine derivatives bearing a 6,6,5-bridged ring system is presented. The m-CPBA-triggered in situ α-oxidation of β-oxoesters to provide the required but unstable α-hydroxy-β-dicarbonyl substrates is the key to this three-step sequence, providing the desired cyclic acetals with excellent stereoselectivities containing two bridgehead and one fully substituted stereocenters. It is noteworthy that the absence of m-CPBA furnished the acetal products bearing a 6,6,6-bridged ring system with similar good results from the same starting materials.
Collapse
Affiliation(s)
- Xue-Jiao Lv
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
| | - Ying-Han Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
| | - Yan-Kai Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology , Qingdao 266003 , China
| |
Collapse
|
14
|
Liang JY, Shen SJ, Chai XQ, Lv T. Lewis-Base-Catalyzed [1 + 2 + 2] Annulation Reaction of Morita–Baylis–Hillman Carbonates with Unsaturated Pyrazolones: Construction of All-Stereogenic Carbon Cyclopentane-Fused Dispiropyrazolones. J Org Chem 2018; 83:12744-12752. [DOI: 10.1021/acs.joc.8b02188] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin-Yan Liang
- College of Life Science, Shanxi Normal University, Linfen 041004, China
| | - Shou-Jie Shen
- Key Laboratory of Magnetic Molecules, Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Linfen 041004, China
| | - Xiao-Qian Chai
- College of Life Science, Shanxi Normal University, Linfen 041004, China
| | - Ting Lv
- College of Life Science, Shanxi Normal University, Linfen 041004, China
| |
Collapse
|
15
|
Affiliation(s)
- Marta Meazza
- Faculty of Natural and Environmental Sciences; University of Southampton; University Road SO17 1BJ UK
| | - Xavier Companyó
- Dipartimento di Scienze Chimiche; University of Padua; via Marzolo 1 35131 Padua Italy
| | - Ramon Rios
- Faculty of Natural and Environmental Sciences; University of Southampton; University Road SO17 1BJ UK
| |
Collapse
|
16
|
Chen P, Yue Z, Zhang J, Lv X, Wang L, Zhang J. Phosphine-Catalyzed Asymmetric Umpolung Addition of Trifluoromethyl Ketimines to Morita-Baylis-Hillman Carbonates. Angew Chem Int Ed Engl 2018; 55:13316-13320. [PMID: 27634055 DOI: 10.1002/anie.201607918] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Indexed: 12/17/2022]
Abstract
A novel phosphine-catalyzed, highly enantioselective umpolung addition of trifluoromethyl ketimines to Morita-Baylis-Hillman carbonates was developed and it provides facile access to optically active trifluoromethyl amines with a chiral tertiary stereocenter under mild reaction conditions. The salient features of this reaction include general substrate scope, mild reaction conditions, good yields, high enantioselectivity, ease of scale-up to gram scale, and further transformations of the products.
Collapse
Affiliation(s)
- Peng Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Zhenting Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Junyou Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Xi Lv
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Lei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China.
| |
Collapse
|
17
|
Singh D, Hazra CK, Malakar CC, Pandey SK, Kaith BS, Singh V. Indium-Mediated Domino Allylation-Lactonisation Approach: Diastereoselective Synthesis of β-Carboline C-3 Tethered α-Methylene γ-Butyrolactones. ChemistrySelect 2018. [DOI: 10.1002/slct.201800006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dharmender Singh
- Department of Chemistry; Dr B R Ambedkar National Institute of Technology (NIT) Jalandhar; 144011 Punjab India
| | - Chinmoy K. Hazra
- Department of Chemistry; Korea Advanced Institute of Science & Technology (KAIST); Daejeon 305701 South Korea
| | - Chandi C. Malakar
- Department of Chemistry; National Institute of Technology (NIT), Manipur; Imphal 795004 Manipur
| | - Satyendra K. Pandey
- Department of Chemistry; Institute of Science; Banaras Hindu University (BHU), Varanasi; 221005, Uttar Pradesh India
| | - B. S. Kaith
- Department of Chemistry; Dr B R Ambedkar National Institute of Technology (NIT) Jalandhar; 144011 Punjab India
| | - Virender Singh
- Department of Chemistry; Dr B R Ambedkar National Institute of Technology (NIT) Jalandhar; 144011 Punjab India
| |
Collapse
|
18
|
Ciogli A, Vivek Kumar S, Mancinelli M, Mazzanti A, Perumal S, Severi C, Villani C. Atropisomerism in 3-arylthiazolidine-2-thiones. A combined dynamic NMR and dynamic HPLC study. Org Biomol Chem 2018; 14:11137-11147. [PMID: 27830854 DOI: 10.1039/c6ob02145j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Sterically hindered 3-arylthiazolidine-2-thiones were prepared by a solvent-free reaction with arylisothiocyanates and 1,4-dithiane-2,5-diol. Atropisomerism was observed in two compounds (3 and 4, aryl = 1-naphthyl and 2-methylnaphth-1-yl), whose rotational energy barriers were measured using dynamic NMR and dynamic HPLC. The experimental analyses were supported by DFT calculations. Thermally stable atropisomers were obtained by dehydration of compounds 3 and 4 and the absolute configuration of the atropisomers of compound 6 was determined by theoretical simulation of the ECD and VCD spectra.
Collapse
Affiliation(s)
- A Ciogli
- Department of Chemistry and Technologies of Drug, Sapienza University of Rome, Piazzale A. Moro 5, I-00185 Rome, Italy
| | - S Vivek Kumar
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India
| | - M Mancinelli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - A Mazzanti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - S Perumal
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India
| | - C Severi
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - C Villani
- Department of Chemistry and Technologies of Drug, Sapienza University of Rome, Piazzale A. Moro 5, I-00185 Rome, Italy
| |
Collapse
|
19
|
Kumar V, Chaudhary S, Mathur M, Swami AK, Malakar CC, Singh V. A Tandem Approach towards Diastereoselective Synthesis of Quinoline C-3 Tethered γ-Lactones. ChemistrySelect 2018. [DOI: 10.1002/slct.201702923] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Vipin Kumar
- Department of Chemistry; National Institute of Technology Jalandhar; 144011 Punjab India
| | - Sandeep Chaudhary
- Department of Chemistry; Malayiva National Institute of Technology Jaipur; 302015 India
| | - Manas Mathur
- Department of Advance Molecular Microbiology; Seminal Applied Sciences Pvt. Ltd.; Jaipur- 302015 India
| | - Ajit K. Swami
- Department of Advance Molecular Microbiology; Seminal Applied Sciences Pvt. Ltd.; Jaipur- 302015 India
| | - Chandi C. Malakar
- Department of Chemistry; National Institute of Technology Manipur; Imphal- 795004 India
| | - Virender Singh
- Department of Chemistry; National Institute of Technology Jalandhar; 144011 Punjab India
| |
Collapse
|
20
|
Ren HX, Peng L, Song XJ, Liao LG, Zou Y, Tian F, Wang LX. Effective and diastereoselective preparation of dispiro[cyclopent-3′-ene]bisoxindoles via novel [3 + 2] annulation of isoindigos and MBH carbonates. Org Biomol Chem 2018; 16:1297-1304. [DOI: 10.1039/c7ob03009f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Efficient, one-step preparation of highly steric dispiro[cyclopent-3′-ene]bisoxindoles with two all-carbon quaternary spirocenters and three adjacent cycles in excellent yields and diastereoselectivities under mild conditions.
Collapse
Affiliation(s)
- Hong-Xia Ren
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| | - Lin Peng
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| | - Xiang-Jia Song
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| | - Li-Guo Liao
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| | - Ying Zou
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| | - Fang Tian
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| | - Li-Xin Wang
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P.R. China
| |
Collapse
|
21
|
Chen P, Zhang J. Phosphine-Catalyzed Asymmetric Synthesis of α-Quaternary Amine via Umpolung γ-Addition of Ketimines to Allenoates. Org Lett 2017; 19:6550-6553. [PMID: 29182346 DOI: 10.1021/acs.orglett.7b03262] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A first phosphine-catalyzed enantioselective umpolung γ-addition of ketimines to allenoates has been developed that provides efficient access to optically active γ,δ-unsaturated α-amino esters and δ-amino esters with a chiral tertiary stereocenter under mild conditions. The salient features of this reaction include general substrate scope, mild conditions, good yields, high enantioselectivity, ease of scale-up to gram scale, and further transformations.
Collapse
Affiliation(s)
- Peng Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| |
Collapse
|
22
|
Kayal S, Mukherjee S. Catalytic Enantioselective Vinylogous Allylic Alkylation of Coumarins. Org Lett 2017; 19:4944-4947. [DOI: 10.1021/acs.orglett.7b02421] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Satavisha Kayal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
23
|
Zhu J, Yuan Y, Wang S, Yao ZJ. Synthesis of 2,3-Dialkylated Tartaric Acid Esters via Visible Light Photoredox-Catalyzed Reductive Dimerization of α-Ketoesters. ACS OMEGA 2017; 2:4665-4677. [PMID: 31457752 PMCID: PMC6641980 DOI: 10.1021/acsomega.7b00749] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/01/2017] [Indexed: 06/10/2023]
Abstract
A mild transition-metal-free protocol to prepare 2,3-dialkylated tartaric acid esters has been developed by taking advantage of a visible light photoredox-catalyzed reductive dimerization of α-ketoesters with a combination of an organic dye photocatalyst and a Hantzsch-type 1,4-dihydropyridine hydrogen donor. A broad range of functional groups including cyclopropane, alkene, alkyne, 4-methoxybenzyl ether, acetal, silyl ether, carbamate, cyclic ether, cyclic thioether, bromoalkane, and N-alkoxyphthalimide are well-compatible. By employing the visible light photoredox-catalyzed reductive coupling and the subsequent optical resolution, both enantioenriched diastereomers of 2,3-dialkylated tartaric acid could be acquired conveniently.
Collapse
Affiliation(s)
- Jing Zhu
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| | - Yi Yuan
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| | - Shaozhong Wang
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| |
Collapse
|
24
|
Chen P, Yue Z, Zhang J, Lv X, Wang L, Zhang J. Phosphine-Catalyzed Asymmetric Umpolung Addition of Trifluoromethyl Ketimines to Morita-Baylis-Hillman Carbonates. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607918] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Peng Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Zhenting Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Junyou Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Xi Lv
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Lei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| |
Collapse
|
25
|
Meninno S, Volpe C, Lattanzi A. One-Pot Quinine-Catalyzed Synthesis of α-Chiral γ-Keto Esters: Enantioenriched Precursors of cis
-α,γ-Substituted-γ-Butyrolactones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600427] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| |
Collapse
|
26
|
Meazza M, Rios R. Synergistic Catalysis: Enantioselective Ring Expansion of Vinyl Cyclopropanes Combining Four Catalytic Cycles for the Synthesis of Highly Substituted Spirocyclopentanes Bearing up to Four Stereocenters. Chemistry 2016; 22:9923-8. [PMID: 27198468 DOI: 10.1002/chem.201601893] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Indexed: 01/01/2023]
Abstract
A double synergistic cascade reaction is reported, combining transition metal and amine catalysis. The reaction between vinyl cyclopropanes and enals renders the final cyclopentane derivatives in excellent yields and stereoselectivities.
Collapse
Affiliation(s)
- Marta Meazza
- School of Chemistry, University of Southampton, UK
| | - Ramon Rios
- School of Chemistry, University of Southampton, UK.
| |
Collapse
|
27
|
Li X, Su J, Liu Z, Zhu Y, Dong Z, Qiu S, Wang J, Lin L, Shen Z, Yan W, Wang K, Wang R. Synthesis of Chiral α-Trifluoromethylamines with 2,2,2-Trifluoroethylamine as a “Building Block”. Org Lett 2016; 18:956-9. [DOI: 10.1021/acs.orglett.5b03566] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyuan Li
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jinhuan Su
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhourujun Liu
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yuanyuan Zhu
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhenghao Dong
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Shuai Qiu
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jiayi Wang
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Li Lin
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhiqiang Shen
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Peoples Republic of China
| | - Wenjin Yan
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Kairong Wang
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Rui Wang
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Peoples Republic of China
- Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| |
Collapse
|
28
|
Meazza M, Light ME, Mazzanti A, Rios R. Synergistic catalysis: cis-cyclopropanation of benzoxazoles. Chem Sci 2016; 7:984-988. [PMID: 29081942 PMCID: PMC5633913 DOI: 10.1039/c5sc03597j] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 10/30/2015] [Indexed: 11/25/2022] Open
Abstract
In the present paper we report our latest efforts in pushing the boundaries of synergistic catalysis. We propose the use of 3 different catalytic cycles working in concert for the formation of cis cyclopropane derivatives of benzoxazoles with excellent stereoselectivities. This is the proof of concept that synergistic catalysis could be successfully used in cascade reactions.
Collapse
Affiliation(s)
- Marta Meazza
- Faculty of Natural & Environmental Sciences , University of Southampton , Highfield Campus , Southampton , SO17 1BJ , UK . ; http://www.riosresearchgroup.com
| | - Mark E Light
- Faculty of Natural & Environmental Sciences , University of Southampton , Highfield Campus , Southampton , SO17 1BJ , UK . ; http://www.riosresearchgroup.com
| | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari" , School of Science , University of Bologna , Viale Risorgimento 4 , 40136 Bologna , Italy
| | - Ramon Rios
- Faculty of Natural & Environmental Sciences , University of Southampton , Highfield Campus , Southampton , SO17 1BJ , UK . ; http://www.riosresearchgroup.com
| |
Collapse
|
29
|
Ceban V, Putaj P, Meazza M, Pitak MB, Coles SJ, Vesely J, Rios R. Synergistic catalysis: highly diastereoselective benzoxazole addition to Morita-Baylis-Hillman carbonates. Chem Commun (Camb) 2015; 50:7447-50. [PMID: 24875953 DOI: 10.1039/c4cc00728j] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An expedited method has been developed for the diastereoselective synthesis of highly functionalized alkyl-azaarene systems with good yields and high diastereoselectivities (>15 : 1 dr). The methodology includes a synergistic catalysis event involving organometallic (10 mol% AgOAc) activation of an alkyl azaarene and Lewis base (10 mol% DABCO) activation of a Morita-Baylis-Hillman carbonate. The structure and relative configuration of a representative product were confirmed by X-ray analysis.
Collapse
Affiliation(s)
- Victor Ceban
- Chemistry, Faculty of Natural & Environmental Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK.
| | | | | | | | | | | | | |
Collapse
|
30
|
A facile and mild synthesis of trisubstituted allylic sulfones from Morita-Baylis-Hillman carbonates. Molecules 2015; 20:8213-22. [PMID: 25961162 PMCID: PMC6272667 DOI: 10.3390/molecules20058213] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/29/2015] [Accepted: 05/04/2015] [Indexed: 11/17/2022] Open
Abstract
An efficient and catalyst-free synthesis of trisubstituted allylic sulfones through an allylic sulfonylation reaction of Morita-Baylis-Hillman (MBH) carbonates with sodium sulfinates has been developed. Under the optimized reaction conditions, a series of trisubstituted allylic sulfones were rapidly prepared in good to excellent yields (71%–99%) with good to high selectivity (Z/E from 79:21 to >99:1). Compared with known synthetic methods, the current protocol features mild reaction temperature, high efficiency and easily available reagents.
Collapse
|
31
|
Reddy CR, Mohammed SZ, Kumaraswamy P. A [3 + 2]-annulation approach to tetrasubstituted furans from MBH-carbonates of acetylenic aldehydes via sequential substitution/cycloisomerization. Org Biomol Chem 2015; 13:8310-21. [DOI: 10.1039/c5ob00989h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new organo base-mediated cascade reaction has been developed for the synthesis of uniquely substituted tetrasubstituted furans, 2-furan-3-yl acrylates, starting from MBH-carbonates of acetylenic aldehydes and keto-methylenes.
Collapse
Affiliation(s)
- Chada Raji Reddy
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research
| | - Siddique Z. Mohammed
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research
| | - Paridala Kumaraswamy
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| |
Collapse
|
32
|
Yao L, Wang CJ. AsymmetricN-Allylic Alkylation of Hydrazones with Morita-Baylis-Hillman Carbonates. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400790] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
33
|
Meazza M, Ceban V, Pitak MB, Coles SJ, Rios R. Synergistic catalysis: enantioselective addition of alkylbenzoxazoles to enals. Chemistry 2014; 20:16853-7. [PMID: 25352171 DOI: 10.1002/chem.201404565] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Indexed: 01/25/2023]
Abstract
A novel catalytic enantioselective methodology based on synergistic catalysis is reported. The strategy involves: 1) the metal-Lewis-acid activation of alkylazaarenes, and 2) the secondary-amine activation of enals. Consequently, highly functionalized chiral alkylazaarenes were obtained in good yields and with reasonable stereoselectivity.
Collapse
Affiliation(s)
- Marta Meazza
- Faculty of Natural and Environmental Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ (UK) www.riosresearchgroup.com
| | | | | | | | | |
Collapse
|
34
|
Putaj P, Tichá I, Císařová I, Veselý J. One-Pot Preparation of Chiral Carbacycles from Morita-Baylis-Hillman Carbonates by an Asymmetric Allylic Alkylation/Olefin Metathesis Sequence. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
35
|
Meninno S, Fuoco T, Tedesco C, Lattanzi A. Straightforward Enantioselective Access to γ-Butyrolactones Bearing an All-Carbon β-Quaternary Stereocenter. Org Lett 2014; 16:4746-9. [DOI: 10.1021/ol502148a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Tiziana Fuoco
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Consiglia Tedesco
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| |
Collapse
|
36
|
Wyrebska A, Pawlowska Z, Gach K, Komorowski P, Protas A, Walkowiak B, Janecka A. Proteomic analysis of proteins engaged in α-methylene-δ-lactone cytotoxic effects in hormone-independent breast cancer MDA-MB-231 cells. Chem Biol Drug Des 2014; 84:300-6. [PMID: 24618086 DOI: 10.1111/cbdd.12317] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/24/2014] [Accepted: 03/02/2014] [Indexed: 12/25/2022]
Abstract
A simple synthetic α-methylene-δ-lactone, 1-isopropyl-2-methylene-1,2-dihydrobenzochromen-3-one, designated DL-3, was shown previously to induce apoptosis and significantly suppress cell metastatic potential in MDA-MB-231 breast cancer cells. The mechanisms through which DL-3 exerts its effects are poorly understood. The purpose of this study was to investigate the protein expression profiles in MDA-MB-231 cells exposed to the DL-3 treatment. Using 2D differential gel electrophoresis, a set of eight differentially expressed proteins (spot intensities which showed ≥1.25-fold change and statistical significance, p < 0.05, between the control and DL-3-treated group) were found and successfully identified by mass spectrometry (MALDI-TOF/MS). The proteomic results revealed that the presence of DL-3 in MDA-MB-231 cells led to the differential regulation of some proteins that are involved in the cell cycle progression, apoptosis, cytokinesis, modulation of transcription, cellular signaling, and vesicular trafficking. The function of other identified proteins is still unknown. Therefore, our data indicate new directions for the further studies of the pathways engaged in the anticancer action exerted by α-methylene-δ-lactones in cancer cells.
Collapse
Affiliation(s)
- Anna Wyrebska
- Department of Biomolecular Chemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | | | | | | | | | | | | |
Collapse
|
37
|
Jayakumar S, Muthusamy S, Prakash M, Kesavan V. Enantioselective Synthesis of Spirooxindole α-exo-Methylene-γ-butyrolactones from 3-OBoc-Oxindoles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301684] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
38
|
|
39
|
Yan Y, En D, Zhuang Z, Guo Y, Liao WW. Synthesis of densely functionalized α-methylene γ-butyrolactones via an organocatalytic one-pot allylic-alkylation–cyclization reaction. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
40
|
Singha Roy SJ, Mukherjee S. Enantioselective desymmetrization of prochiral 1,3-dinitropropanes via organocatalytic allylic alkylation. Chem Commun (Camb) 2014; 50:121-3. [DOI: 10.1039/c3cc47645f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
41
|
Wang QL, Peng L, Wang FY, Zhang ML, Jia LN, Tian F, Xu XY, Wang LX. An organocatalytic asymmetric sequential allylic alkylation–cyclization of Morita–Baylis–Hillman carbonates and 3-hydroxyoxindoles. Chem Commun (Camb) 2013; 49:9422-4. [DOI: 10.1039/c3cc45139a] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|