1
|
Park HS, Lee JY, Kang YK. Exploring helix structures of γ-peptides based on 2-(aminomethyl)cyclopentanecarboxylic acid. Biopolymers 2024; 115:e23575. [PMID: 38465777 DOI: 10.1002/bip.23575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/12/2024]
Abstract
Conformational search and density functional theory calculations were performed to explore the preferences of helical structures for chiro-specific oligo-γ-peptides of 2-(aminomethyl)cyclopentanecarboxylic acid (γAmc5) with a cyclopentyl constraint on the Cα-Cβ bond in solution. The dimer and tetramer of γAmc5 (1) with homochiral (1S, 2S) configurations exhibited a strong preference for the 9-membered helix foldamer in solution, except for the tetramer in water. However, the oligomers of γAmc5 (1) longer than tetramer preferentially adopted a right-handed (P)-2.614-helix (H1-14) as the peptide sequence becomes longer and as solvent polarity increases. The high stabilities for H1-14 foldamers of γAmc5 (1) in solution were ascribed to the favored solvation free energies. The calculated mean backbone torsion angles for H1-14 helix foldamers of γAmc5 (1) were similar to those calculated for oligomers of other γ-residues with cyclopentane or cyclohexane rings. However, the substitution of cyclopentane constraints on the Cα-Cβ bond of the γAmc5 (1) residue resulted in different conformational preferences and/or handedness of helix foldamers. In particular, the pyrrolidine-substituted analogs of the H1-14 foldamers of γAmc5 (1) with adjacent amine diads substituted at a proximal distance are expected to be potential catalysts for the crossed aldol condensation in nonpolar and polar solvents.
Collapse
Affiliation(s)
- Hae Sook Park
- Department of Nursing, Cheju Halla University, Cheju, Republic of Korea
| | - Joo Yun Lee
- AI Team, Yunovia Co., Ltd., Hwaseong-si, Gyeonggi, Republic of Korea
| | - Young Kee Kang
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| |
Collapse
|
2
|
Nazari N, Bernard S, Fortin D, Marmin T, Gendron L, Dory YL. Triple Thorpe-Ingold Effect in the Synthesis of 18-Membered C 3 Symmetric Lactams Stacking as Endless Supramolecular Tubes. Chemistry 2023; 29:e202203717. [PMID: 36469732 DOI: 10.1002/chem.202203717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
Three C3 symmetric macrolactams were very efficiently cyclized from their linear precursors. Adequately located substituents are responsible for the enhancement of reactivity that is not observed in the unsubstituted parent. DFT calculations show that the properly folded cyclization precursor, the reactive conformer, is more populated than other conformers, leading to a decrease of free energy of activation. The crystal structure of the ring substituted with three very bulky esters indicates that tubular stacking is preserved.
Collapse
Affiliation(s)
- Niousha Nazari
- Laboratoire de Synthèse Supramoléculaire Département de Chimie, Université de Sherbrooke 2500, boulevard Université, Sherbrooke, Québec, J1K 2R1, Canada.,Institut de Pharmacologie et Centre de Recherche du CHUS, Université de Sherbrooke 3001, 12e avenue nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Sylvain Bernard
- Laboratoire de Synthèse Supramoléculaire Département de Chimie, Université de Sherbrooke 2500, boulevard Université, Sherbrooke, Québec, J1K 2R1, Canada.,Institut de Pharmacologie et Centre de Recherche du CHUS, Université de Sherbrooke 3001, 12e avenue nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Daniel Fortin
- Laboratoire de cristallographie, Université de Sherbrooke 2500, boulevard Université, Sherbrooke, Québec, J1K 2R1, Canada
| | - Thomas Marmin
- Laboratoire de Synthèse Supramoléculaire Département de Chimie, Université de Sherbrooke 2500, boulevard Université, Sherbrooke, Québec, J1K 2R1, Canada.,Institut de Pharmacologie et Centre de Recherche du CHUS, Université de Sherbrooke 3001, 12e avenue nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Louis Gendron
- Département de Pharmacologie-Biophysique 3001, 12e avenue nord, Sherbrooke, Québec, J1H 5N4, Canada.,Institut de Pharmacologie et Centre de Recherche du CHUS, Université de Sherbrooke 3001, 12e avenue nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Yves L Dory
- Laboratoire de Synthèse Supramoléculaire Département de Chimie, Université de Sherbrooke 2500, boulevard Université, Sherbrooke, Québec, J1K 2R1, Canada.,Institut de Pharmacologie et Centre de Recherche du CHUS, Université de Sherbrooke 3001, 12e avenue nord, Sherbrooke, Québec, J1H 5N4, Canada
| |
Collapse
|
3
|
Asymmetric Organocatalysis—A Powerful Technology Platform for Academia and Industry: Pregabalin as a Case Study. Catalysts 2022. [DOI: 10.3390/catal12080912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Enantioselective organocatalysis has quickly established itself as the third pillar of asymmetric catalysis. It is a powerful technology platform, and it has a tremendous impact in both academic and industrial settings. By focusing on pregabalin, as a case study, this Perspective aims to show how a process amenable to industry of a simple chiral molecule can be tackled in several different ways using organocatalysis.
Collapse
|
4
|
Hernández-Guadarrama A, Cuevas F, Montoya-Balbás IJ, Román-Bravo P, Linzaga-Elizalde I. Synthesis of β-mono- and β,γ-di-substituted α-methylene-γ-lactams. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
5
|
Porras M, Hernández D, González CC, Boto A. “Cut and Paste” Processes in the Search of Bioactive Products: One-Pot, Metal-free O-Radical Scission-Oxidation-Addition of C, N or P-Nucleophiles. Front Chem 2022; 10:884124. [PMID: 35665068 PMCID: PMC9158125 DOI: 10.3389/fchem.2022.884124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Hypervalent iodine reagents have been applied in many metal-free, efficient synthesis of natural products and other bioactive compounds. In particular, treatment of alcohols, acetals and acids with hypervalent iodine reagents and iodine results in O-radicals that can undergo a β-scission reaction. Under these oxidative conditions, derivatives of amino acids, peptides or carbohydrates are converted into cationic intermediates, which can subsequently undergo inter- or intramolecular addition of nucleophiles. Most reported papers describe the addition of oxygen nucleophiles, but this review is focused on the addition of carbon, nitrogen and phosphorous nucleophiles. The resulting products (nucleoside and alkaloid analogs, unnatural amino acids, site-selectively modified peptides) are valuable intermediates or analogs of bioactive compounds.
Collapse
|
6
|
Ben Haj Salah K, Terzani F, Pietri M, Zanato C, Chelain E, Pytkowicz J. Highly Stereoselective Multigram Scale Synthesis of (3S,4S)-Statine and (3S,4S)-N-Benzylstatine. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
7
|
Carlone A, Bernardi L, McCormack P, Warr T, Oruganti S, Cobley CJ. Asymmetric Organocatalysis and Continuous Chemistry for an Efficient and Cost-Competitive Process to Pregabalin. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Armando Carlone
- Dr. Reddy’s Laboratories (EU) Ltd. IPDO-Cambridge, 410 Cambridge Science Park, Milton Road, Cambridge CB4 0PE, U.K
| | - Luca Bernardi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna, Alma Mater Studiorum − University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Peter McCormack
- Dr. Reddy’s Laboratories (EU) Ltd. IPDO-Cambridge, 410 Cambridge Science Park, Milton Road, Cambridge CB4 0PE, U.K
| | - Tony Warr
- Dr. Reddy’s Laboratories (EU) Ltd. IPDO-Cambridge, 410 Cambridge Science Park, Milton Road, Cambridge CB4 0PE, U.K
| | - Srinivas Oruganti
- Center for Process Research & Innovation, Dr. Reddy’s Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500046, Telangana, India
| | - Christopher J. Cobley
- Dr. Reddy’s Laboratories (EU) Ltd. IPDO-Cambridge, 410 Cambridge Science Park, Milton Road, Cambridge CB4 0PE, U.K
| |
Collapse
|
8
|
Hahm H, Baek D, Kim D, Park S, Ryoo JY, Hong S. Photoredox-Catalyzed α-Aminoalkylcarboxylation of Allenes with CO 2. Org Lett 2021; 23:3879-3884. [PMID: 33913718 DOI: 10.1021/acs.orglett.1c01011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The photoredox-catalyzed α-aminoalkylcarboxylation of aryl allenes with CO2 and N,N-dimethylanilines is reported for the first time (26 examples, up to 96% yield). In the case of electron-deficient allenes, good regioselectivity was observed (up to 94:6), exclusively generating kinetic products over thermodynamic products. This protocol is a novel synthetic method for highly functionalized β,γ-unsaturated γ-aminobutyric esters.
Collapse
Affiliation(s)
- Hyungwoo Hahm
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Doohyun Baek
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Dowon Kim
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seongwook Park
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jeong Yup Ryoo
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea.,School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| |
Collapse
|
9
|
Yang D, Huang H, Zhang H, Yin LM, Song MP, Niu JL. Regioselective Intermolecular Hydroamination of Unactivated Alkenes: “Co–H” Enabled Remote Functionalization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00625] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Dandan Yang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - He Zhang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Li-Ming Yin
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| |
Collapse
|
10
|
Feng S, Buchwald SL. CuH-Catalyzed Regio- and Enantioselective Hydrocarboxylation of Allenes: Toward Carboxylic Acids with Acyclic Quaternary Centers. J Am Chem Soc 2021; 143:4935-4941. [PMID: 33761252 PMCID: PMC8058699 DOI: 10.1021/jacs.1c01880] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report a method to prepare α-chiral carboxylic acid derivatives, including those bearing all-carbon quaternary centers, through an enantioselective CuH-catalyzed hydrocarboxylation of allenes with a commercially available fluoroformate. A broad range of heterocycles and functional groups on the allenes were tolerated in this protocol, giving enantioenriched α-quaternary and tertiary carboxylic acid derivatives in good yields with exclusive branched regioselectivity. The synthetic utility of this approach was further demonstrated by derivatization of the products to afford biologically important compounds, including the antiplatelet drug indobufen.
Collapse
Affiliation(s)
- Sheng Feng
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
11
|
Liu C, Rouhi J. Dendritic fibrous nanosilica-supported dendritic IL/Ru(ii) as photocatalysts for the dicarbofunctionalization of styrenes with carbon dioxide and amines. RSC Adv 2021; 11:9933-9941. [PMID: 35423497 PMCID: PMC8695460 DOI: 10.1039/d0ra10729h] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 06/23/2021] [Accepted: 02/05/2021] [Indexed: 12/23/2022] Open
Abstract
The effectual utilization of heterogeneous catalysts from nano sources through chemical moderation for the α-aminomethylcarboxylation of alkenes with carbon dioxide and amines is an attractive area to study. Dendritic fibrous nanosilica (DFNS) is a cost-effective, resistant, plenteous, and reproducible source with dandelion-like fibrous anatomy. The present paper is a report on an easy method to provide a family of new DFNS-supported dendritic imidazolium IL/Ru(ii) heterogeneous catalysts DFNS/IL/Ru (1-3) with high ionic density from DFNS. A positive dendritic effect was perceived in the chemical stabilization performance of CO2. DFNS/IL/Ru(ii) was appropriately identified by UV-vis spectroscopy, XPS, SEM, TEM, FT-IR spectroscopy, and TGA. It was discovered that DFNS/IL/Ru(ii) has high catalytic activity for the synthesis of quinoline-2-one through the annulation of ortho-heteroaryl anilines and CO2. DFNS/IL/Ru (3) could be reutilized ten continuous times with no notable reduction in the catalytic activity. Notably, the coveted quinoline-2-one was prepared on a multi-gram scale by deploying DFNS/IL/Ru (3) as a green heterogeneous catalyst. Owing to the attendance of the zwitterionic liquid functional groups on the exterior layer of the bio-based DFNS/IL/Ru (3) catalyst, DFNS/IL/Ru (3) expressed the highest catalytic activity. This approach provides highly functional γ-amino acids in proper yields with great selective power. This paper announces the first nanocatalyst for this transformation, comprising the DFNS-supported Ru N-heterocyclic carbine complex.
Collapse
Affiliation(s)
- Can Liu
- School of Electronic Engineering, Xi'an Shiyou University Xi'an 710065 China
| | - Jalal Rouhi
- Faculty of Physics, University of Tabriz Tabriz 51566 Iran
| |
Collapse
|
12
|
Yu S, Li J, Yao P, Feng J, Cui Y, Li J, Liu X, Wu Q, Lin J, Zhu D. Inverting the Enantiopreference of Nitrilase‐Catalyzed Desymmetric Hydrolysis of Prochiral Dinitriles by Reshaping the Binding Pocket with a Mirror‐Image Strategy. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shanshan Yu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jinlong Li
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Peiyuan Yao
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jinhui Feng
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Yunfeng Cui
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jianjiong Li
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Xiangtao Liu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Qiaqing Wu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jianping Lin
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Dunming Zhu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| |
Collapse
|
13
|
Chen JP, Li Y, Liu C, Wang T, Chung LW, Xu MH. Water as a Direct Proton Source for Asymmetric Hydroarylation Catalyzed by a Rh(I)-Diene: Access to Nonproteinogenic β 2/γ 2/δ 2-Amino Acid Derivatives. Org Lett 2021; 23:571-577. [PMID: 33373250 DOI: 10.1021/acs.orglett.0c04099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly enantioselective rhodium-catalyzed intermolecular hydroarylation of α-aminoalkyl acrylates using water as a direct proton source has been realized by employing a chiral bicyclo[3.3.0] diene ligand, allowing efficient access to a broad range of α-aryl-methyl-substituted β2-, γ2-, and δ2-amino esters with excellent enantioselectivities (up to 98% ee) under exceptionally mild conditions. By utilizing this method, a series of structurally interesting benzo-fused heterocyclic molecules and the corresponding β2-, γ2-, and δ2-amino acids are facilely constructed.
Collapse
Affiliation(s)
- Jian-Ping Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-chongzhi Road, Shanghai 201203, China
| | - Yi Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-chongzhi Road, Shanghai 201203, China
| | - Chao Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, China
| | - Tianyi Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-chongzhi Road, Shanghai 201203, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, China
| | - Lung Wa Chung
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, China
| | - Ming-Hua Xu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-chongzhi Road, Shanghai 201203, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, China
| |
Collapse
|
14
|
Tian S, Yang Q, Sadeghzadeh SM. Control of the synthesis and morphology of nano dendritic CuAl 2O 4 as a nanocatalyst for photoredox-catalyzed dicarbofunctionalization of styrenes with amines and CO 2. NEW J CHEM 2021. [DOI: 10.1039/d1nj00899d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Various morphologies of a nano CuAl2O4 fiber microsphere were produced through diverse synthesis situations.
Collapse
Affiliation(s)
- Shaopeng Tian
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device
- School of Science
- Xijing University
- Xi’an
- China
| | - Qianqian Yang
- Fundamental Education Center
- Xijing University
- Xi’an
- China
| | | |
Collapse
|
15
|
Cao H, Li J, Zhang F, Cahard D, Ma J. Asymmetric Synthesis of Chiral Amino Carboxylic‐Phosphonic Acid Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001345] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hao‐Qiang Cao
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) and Tianjin Collaborative Innovation Center of Chemical Science & Engineering Tianjin University Tianjin 300072 People's Republic of China
| | - Jun‐Kuan Li
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) and Tianjin Collaborative Innovation Center of Chemical Science & Engineering Tianjin University Tianjin 300072 People's Republic of China
| | - Fa‐Guang Zhang
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) and Tianjin Collaborative Innovation Center of Chemical Science & Engineering Tianjin University Tianjin 300072 People's Republic of China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Binhai New City Fuzhou 350207 People's Republic of China
| | - Dominique Cahard
- CNRS UMR 6014 COBRA Normandie Université 76821 Mont Saint Aignan France
| | - Jun‐An Ma
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) and Tianjin Collaborative Innovation Center of Chemical Science & Engineering Tianjin University Tianjin 300072 People's Republic of China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Binhai New City Fuzhou 350207 People's Republic of China
| |
Collapse
|
16
|
Yu S, Li J, Yao P, Feng J, Cui Y, Li J, Liu X, Wu Q, Lin J, Zhu D. Inverting the Enantiopreference of Nitrilase‐Catalyzed Desymmetric Hydrolysis of Prochiral Dinitriles by Reshaping the Binding Pocket with a Mirror‐Image Strategy. Angew Chem Int Ed Engl 2020; 60:3679-3684. [DOI: 10.1002/anie.202012243] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/19/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Shanshan Yu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jinlong Li
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Peiyuan Yao
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jinhui Feng
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Yunfeng Cui
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jianjiong Li
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Xiangtao Liu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Qiaqing Wu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Jianping Lin
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| | - Dunming Zhu
- National Technology Innovation Center of Synthetic Biology National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences 32 Xi Qi Dao, Tianjin Airport Economic Area Tianjin 300308 P. R. China
| |
Collapse
|
17
|
Reddy RB, M V, Krishnan MA, Chelvam V. Synthesis of tubuvaline (Tuv) fragment of tubulysin via diastereoselective dihydroxylation of homoallylamine. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1855355] [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)
- Ramesh B. Reddy
- Discipline of Chemistry, Indian Institute of Technology Indore, Indore, India
| | - Vijay M
- Discipline of Chemistry, Indian Institute of Technology Indore, Indore, India
| | - Mena Asha Krishnan
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Venkatesh Chelvam
- Discipline of Chemistry, Indian Institute of Technology Indore, Indore, India
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| |
Collapse
|
18
|
Miró R, Cunillera A, Margalef J, Lutz D, Börner A, Pamiès O, Diéguez M, Godard C. Rh-Catalyzed Asymmetric Hydroaminomethylation of α-Substituted Acrylamides: Application in the Synthesis of RWAY. Org Lett 2020; 22:9036-9040. [PMID: 33164527 DOI: 10.1021/acs.orglett.0c03433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The successful rhodium-catalyzed asymmetric hydroformylation and hydroaminomethylation of α-substituted acrylamides is described using 1,3-phosphite-phosphoramidite ligands based on a sugar backbone. A broad scope of chiral aldehydes and amines were afforded in high yields and excellent enantioselectivities (up to 99%). Furthermore, the synthetic potential of this method is demonstrated by the single-step synthesis of the brain imaging molecule RWAY.
Collapse
Affiliation(s)
- Roger Miró
- Departament de Química Física i Inorgànica, Universitat Rovira I Virgili, C/Marcel·lí Domingo 1, 43007, Tarragona, Spain
| | - Anton Cunillera
- Departament de Química Física i Inorgànica, Universitat Rovira I Virgili, C/Marcel·lí Domingo 1, 43007, Tarragona, Spain
| | - Jèssica Margalef
- Departament de Química Física i Inorgànica, Universitat Rovira I Virgili, C/Marcel·lí Domingo 1, 43007, Tarragona, Spain
| | - Domke Lutz
- Leibniz-Institut für Katalyse e.V. Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Armin Börner
- Leibniz-Institut für Katalyse e.V. Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Oscar Pamiès
- Departament de Química Física i Inorgànica, Universitat Rovira I Virgili, C/Marcel·lí Domingo 1, 43007, Tarragona, Spain
| | - Montserrat Diéguez
- Departament de Química Física i Inorgànica, Universitat Rovira I Virgili, C/Marcel·lí Domingo 1, 43007, Tarragona, Spain
| | - Cyril Godard
- Departament de Química Física i Inorgànica, Universitat Rovira I Virgili, C/Marcel·lí Domingo 1, 43007, Tarragona, Spain
| |
Collapse
|
19
|
Cunillera A, de los Bernardos MD, Urrutigoïty M, Claver C, Ruiz A, Godard C. Efficient synthesis of chiral γ-aminobutyric esters via direct rhodium-catalysed enantioselective hydroaminomethylation of acrylates. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01797f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first successful rhodium catalysed asymmetric hydroaminomethylation of alkenes using a single catalyst is reported with ees up to 86%.
Collapse
Affiliation(s)
- Anton Cunillera
- Departament de Química Física i Inorgànica
- Universitat Rovira I Virgili
- Tarragona
- Spain
| | | | - Martine Urrutigoïty
- Laboratoire de Chimie de Coordination
- LCC
- Université de Toulouse
- CNRS
- 31030 Toulouse Cedex 4
| | - Carmen Claver
- Departament de Química Física i Inorgànica
- Universitat Rovira I Virgili
- Tarragona
- Spain
- Centre Tecnològic de Química de Catalunya-Eurecat
| | - Aurora Ruiz
- Departament de Química Física i Inorgànica
- Universitat Rovira I Virgili
- Tarragona
- Spain
| | - Cyril Godard
- Departament de Química Física i Inorgànica
- Universitat Rovira I Virgili
- Tarragona
- Spain
| |
Collapse
|
20
|
Nájera C, Foubelo F, Sansano JM, Yus M. Stereodivergent routes in organic synthesis: carbohydrates, amino acids, alkaloids and terpenes. Org Biomol Chem 2020; 18:1232-1278. [DOI: 10.1039/c9ob02419k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The natural occurrence of enantiomers and diastereomers is often encountered.
Collapse
Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
| | - Francisco Foubelo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica
| | - José M. Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
| |
Collapse
|
21
|
Qian H, Sun S, Zhao W, Sun J. An efficient [3+2] annulation for the asymmetric synthesis of densely-functionalized pyrrolidinones and γ-butenolides. Chem Commun (Camb) 2020; 56:11295-11298. [DOI: 10.1039/d0cc05188h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Disclosed here is a new [3+2] annulation of siloxy alkynes that provides robust access to highly enantioenriched, densely-substituted pyrrolidinones and γ-butenolides, whose direct synthesis remains challenging.
Collapse
Affiliation(s)
- Hui Qian
- School of Petrochemical Engineering, and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
- Department of Chemistry
| | - Song Sun
- School of Petrochemical Engineering, and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Wanxiang Zhao
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Clear Water Bay
- Kowloon
- China
| | - Jianwei Sun
- School of Petrochemical Engineering, and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
- Department of Chemistry
| |
Collapse
|
22
|
Claes BSR, Takeo E, Fukusaki E, Shimma S, Heeren RMA. Imaging Isomers on a Biological Surface: A Review. Mass Spectrom (Tokyo) 2019; 8:A0078. [PMID: 32158629 PMCID: PMC7035452 DOI: 10.5702/massspectrometry.a0078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 10/31/2019] [Indexed: 12/30/2022] Open
Abstract
Mass spectrometry imaging is an imaging technology that allows the localization and identification of molecules on (biological) sample surfaces. Obtaining the localization of a compound in tissue is of great value in biological research. Yet, the identification of compounds remains a challenge. Mass spectrometry alone, even with high-mass resolution, cannot always distinguish between the subtle structural differences of isomeric compounds. This review discusses recent advances in mass spectrometry imaging of lipids, steroid hormones, amino acids and proteins that allow imaging with isomeric resolution. These improvements in detailed identification can give new insights into the local biological activity of isomers.
Collapse
Affiliation(s)
- Britt S. R. Claes
- Maastricht MultiModal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry (IMS), Maastricht University
| | - Emi Takeo
- Department of Biotechnology, Graduate School of Engineering, Osaka University
| | - Eiichiro Fukusaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University
| | - Shuichi Shimma
- Department of Biotechnology, Graduate School of Engineering, Osaka University
| | - Ron M. A. Heeren
- Maastricht MultiModal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry (IMS), Maastricht University
| |
Collapse
|
23
|
Oikawa M, Sugeno Y, Tukada H, Takasaki Y, Takamizawa S, Irie R. Four Stereoisomers of 2-Aminomethyl-1-cyclopropanecarboxylic Acid: Synthesis and Biological Evaluation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Masato Oikawa
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Yuka Sugeno
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Hideyuki Tukada
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Yuichi Takasaki
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Satoshi Takamizawa
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Raku Irie
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| |
Collapse
|
24
|
Zheng D, Studer A. Asymmetric Synthesis of Heterocyclic γ-Amino-Acid and Diamine Derivatives by Three-Component Radical Cascade Reactions. Angew Chem Int Ed Engl 2019; 58:15803-15807. [PMID: 31489747 DOI: 10.1002/anie.201908987] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Indexed: 01/01/2023]
Abstract
An enantioselective three-component radical reaction of quinolines or pyridines with enamides and α-bromo carbonyl compounds by dual photoredox and chiral Brønsted acid catalysis is presented. A range of valuable chiral γ-amino-acid derivatives are accessible in high chemo-, regio-, and enantioselectivity from simple, readily available starting materials under mild reaction conditions. Using the same strategy, the asymmetric synthesis of 1,2-diamine derivatives is also reported.
Collapse
Affiliation(s)
- Danqing Zheng
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| |
Collapse
|
25
|
Zheng D, Studer A. Asymmetric Synthesis of Heterocyclic γ‐Amino‐Acid and Diamine Derivatives by Three‐Component Radical Cascade Reactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908987] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Danqing Zheng
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| |
Collapse
|
26
|
Sim JH, Park JH, Maity P, Song CE. Access to Chiral GABA Analogues Bearing a Trifluoromethylated All-Carbon Quaternary Stereogenic Center through Water-Promoted Organocatalytic Michael Reactions. Org Lett 2019; 21:6715-6719. [PMID: 31419145 DOI: 10.1021/acs.orglett.9b02320] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Water enables the highly challenging enantioselective Michael addition of sterically congested β-trifluoromethyl-β-aryl- or -alkyl-substituted nitroolefins with dithiomalonates. Under on-water conditions, the reaction rates were remarkably accelerated as a result of enforced hydrophobic interactions between catalysts and reactants. Takemoto-type thiourea catalysts are very effective for this transformation, affording highly enantioenriched Michael adducts that provide simple access to chiral γ-aminobutyric acid (GABA) analogues with a β-trifluoromethylated quaternary stereocenter.
Collapse
Affiliation(s)
- Jae Hun Sim
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Jin Hyun Park
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Pintu Maity
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Choong Eui Song
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| |
Collapse
|
27
|
Luo W, Sun Z, Fernando EHN, Nesterov VN, Cundari TR, Wang H. Asymmetric Ring-Opening of Donor–Acceptor Cyclopropanes with Primary Arylamines Catalyzed by a Chiral Heterobimetallic Catalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02523] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Weiwei Luo
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - Zhicheng Sun
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - E. H. Nisala Fernando
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - Vladimir N. Nesterov
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - Thomas R. Cundari
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - Hong Wang
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| |
Collapse
|
28
|
|
29
|
Assad S, Sabala R, Jiménez J, Sansinenea E, Ortiz A. Diastereoselective conjugate addition of organocuprates to N-[4-(Dibenzylaminobutenoyl)]oxazolidinone. Synthesis of chiral β-substituted γ-aminoacids. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
30
|
Ďuriš A, Berkeš D, Jakubec P. Stereodivergent synthesis of cyclic γ-aminobutyric acid – GABA analogues. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
31
|
Kerres S, Plut E, Malcherek S, Rehbein J, Reiser O. Visible Light‐Mediated Synthesis of Enantiopure γ‐Cyclobutane Amino and 3‐(Aminomethyl)‐5‐phenylpentanoic Acids. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801413] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sabine Kerres
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Eva Plut
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Simon Malcherek
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Julia Rehbein
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Oliver Reiser
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| |
Collapse
|
32
|
Yu S, Yao P, Li J, Feng J, Wu Q, Zhu D. Improving the catalytic efficiency and stereoselectivity of a nitrilase from Synechocystis sp. PCC6803 by semi-rational engineering en route to chiral γ-amino acids. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02455c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Simultaneously improving activity and stereoselectivity of a nitrilase to catalyze the desymmetrization of 3-substituted glutaronitriles is presented.
Collapse
Affiliation(s)
- Shanshan Yu
- National Engineering Laboratory for Industrial Enzymes
- Tianjin Engineering Research Center of Biocatalytic Technology
- Tianjin Institute of Industrial Biotechnology
- Chinese Academy of Sciences
- Tianjin 300308
| | - Peiyuan Yao
- National Engineering Laboratory for Industrial Enzymes
- Tianjin Engineering Research Center of Biocatalytic Technology
- Tianjin Institute of Industrial Biotechnology
- Chinese Academy of Sciences
- Tianjin 300308
| | - Jinlong Li
- National Engineering Laboratory for Industrial Enzymes
- Tianjin Engineering Research Center of Biocatalytic Technology
- Tianjin Institute of Industrial Biotechnology
- Chinese Academy of Sciences
- Tianjin 300308
| | - Jinhui Feng
- National Engineering Laboratory for Industrial Enzymes
- Tianjin Engineering Research Center of Biocatalytic Technology
- Tianjin Institute of Industrial Biotechnology
- Chinese Academy of Sciences
- Tianjin 300308
| | - Qiaqing Wu
- National Engineering Laboratory for Industrial Enzymes
- Tianjin Engineering Research Center of Biocatalytic Technology
- Tianjin Institute of Industrial Biotechnology
- Chinese Academy of Sciences
- Tianjin 300308
| | - Dunming Zhu
- National Engineering Laboratory for Industrial Enzymes
- Tianjin Engineering Research Center of Biocatalytic Technology
- Tianjin Institute of Industrial Biotechnology
- Chinese Academy of Sciences
- Tianjin 300308
| |
Collapse
|
33
|
Ouchakour L, Ábrahámi RA, Forró E, Haukka M, Fülöp F, Kiss L. Stereocontrolled Synthesis of Fluorine-Containing Piperidine γ-Amino Acid Derivatives. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801540] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Lamiaa Ouchakour
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged, Eötvös u. Hungary
- Interdisciplinary Excellence Centre; Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Renáta A. Ábrahámi
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged, Eötvös u. Hungary
| | - Enikő Forró
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged, Eötvös u. Hungary
| | - Matti Haukka
- Department of Chemistry; Institute of Pharmaceutical Chemistry; University of Jyväskylä; Finland
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged, Eötvös u. Hungary
- MTA-SZTE Stereochemistry Research Group; Hungarian Academy of Sciences; Szeged, Eötvös u. 6 Hungary
- Interdisciplinary Excellence Centre; Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Loránd Kiss
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged, Eötvös u. Hungary
- Interdisciplinary Excellence Centre; Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| |
Collapse
|
34
|
Shu C, Mega RS, Andreassen BJ, Noble A, Aggarwal VK. Synthesis of Functionalized Cyclopropanes from Carboxylic Acids by a Radical Addition–Polar Cyclization Cascade. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808598] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chao Shu
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Riccardo S. Mega
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Björn J. Andreassen
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Adam Noble
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | | |
Collapse
|
35
|
Shu C, Mega RS, Andreassen BJ, Noble A, Aggarwal VK. Synthesis of Functionalized Cyclopropanes from Carboxylic Acids by a Radical Addition-Polar Cyclization Cascade. Angew Chem Int Ed Engl 2018; 57:15430-15434. [PMID: 30204292 PMCID: PMC6282618 DOI: 10.1002/anie.201808598] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Indexed: 01/14/2023]
Abstract
Herein, we describe the development of a photoredox-catalyzed decarboxylative radical addition-polar cyclization cascade approach to functionalized cyclopropanes. Reductive termination of radical-polar crossover reactions between aliphatic carboxylic acids and electron-deficient alkenes yielded carbanion intermediates that were intercepted in intramolecular alkylations with alkyl chlorides appended to the alkene substrate. The mild conditions, which make use of a readily available organic photocatalyst and visible light, were demonstrated to be amenable to a broad range of structurally complex carboxylic acids and a wide variety of chloroalkyl alkenes, demonstrating exquisite functional group tolerance.
Collapse
Affiliation(s)
- Chao Shu
- School of ChemistryUniversity of Bristol, Cantock's CloseBristolBS8 1TSUK
| | - Riccardo S. Mega
- School of ChemistryUniversity of Bristol, Cantock's CloseBristolBS8 1TSUK
| | | | - Adam Noble
- School of ChemistryUniversity of Bristol, Cantock's CloseBristolBS8 1TSUK
| | | |
Collapse
|
36
|
Characterization of ELP-fused ω-Transaminase and Its Application for the Biosynthesis of β-Amino Acid. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-018-0268-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
37
|
Melnykov KP, Volochnyuk DM, Ryabukhin SV, Rusanov EB, Grygorenko OO. A conformationally restricted GABA analogue based on octahydro-1H-cyclopenta[b]pyridine scaffold. Amino Acids 2018; 51:255-261. [DOI: 10.1007/s00726-018-2660-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 09/29/2018] [Indexed: 01/04/2023]
|
38
|
Chen Q, Bao Y, Yang X, Dai Z, Yang F, Zhou Q. Umpolung of o-Hydroxyaryl Azomethine Ylides: Entry to Functionalized γ-Aminobutyric Acid under Phosphine Catalysis. Org Lett 2018; 20:5380-5383. [DOI: 10.1021/acs.orglett.8b02297] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qingqing Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Yishu Bao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Xiuqin Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Fulai Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| |
Collapse
|
39
|
Ueda J, Harada S, Nakayama H, Nemoto T. Silver-catalyzed regioselective hydroamination of alkenyl diazoacetates to synthesize γ-amino acid equivalents. Org Biomol Chem 2018; 16:4675-4682. [PMID: 29888358 DOI: 10.1039/c8ob00894a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A simple protocol to directly access γ-amino acid derivatives by intermolecular regioselective hydroamination of trichloroethyl alkenyldiazoacetates with carbamate using a silver tetrafluoroborate catalyst is described. Density functional theory (DFT) calculations to analyze the reaction mechanism revealed that multiple attractive interactions occur in a transition state to promote the vinylogous addition of nitrogen nucleophiles.
Collapse
Affiliation(s)
- Jun Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan.
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan.
| | - Hiroki Nakayama
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan.
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan. and Molecular Chirality Research Center, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| |
Collapse
|
40
|
Lang Q, Gu G, Cheng Y, Yin Q, Zhang X. Highly Enantioselective Synthesis of Chiral γ-Lactams by Rh-Catalyzed Asymmetric Hydrogenation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00827] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiwei Lang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Guoxian Gu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Yaoti Cheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Qin Yin
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Xumu Zhang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| |
Collapse
|
41
|
Grygorenko OO, Biitseva AV, Zhersh S. Amino sulfonic acids, peptidosulfonamides and other related compounds. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
42
|
Noble A, Mega RS, Pflästerer D, Myers EL, Aggarwal VK. Visible-Light-Mediated Decarboxylative Radical Additions to Vinyl Boronic Esters: Rapid Access to γ-Amino Boronic Esters. Angew Chem Int Ed Engl 2018; 57:2155-2159. [PMID: 29316095 PMCID: PMC5838549 DOI: 10.1002/anie.201712186] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Indexed: 12/20/2022]
Abstract
The synthesis of alkyl boronic esters by direct decarboxylative radical addition of carboxylic acids to vinyl boronic esters is described. The reaction proceeds under mild photoredox catalysis and involves an unprecedented single-electron reduction of an α-boryl radical intermediate to the corresponding anion. The reaction is amenable to a diverse range of substrates, including α-amino, α-oxy, and alkyl carboxylic acids, thus providing a novel method to rapidly access boron-containing molecules of potential biological importance.
Collapse
Affiliation(s)
- Adam Noble
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Riccardo S. Mega
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Daniel Pflästerer
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Eddie L. Myers
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | | |
Collapse
|
43
|
Hu B, Deng L. Catalytic Asymmetric Synthesis of Trifluoromethylated γ-Amino Acids through the Umpolung Addition of Trifluoromethyl Imines to Carboxylic Acid Derivatives. Angew Chem Int Ed Engl 2018; 57:2233-2237. [PMID: 29232488 PMCID: PMC6408948 DOI: 10.1002/anie.201710915] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Indexed: 11/07/2022]
Abstract
Novel cinchona alkaloid derived chiral phase-transfer catalysts enabled the highly chemo-, regio-, diastereo-, and enantioselective umpolung addition of trifluoromethyl imines to α,β-unsaturated N-acyl pyrroles. With a catalyst loading ranging from 0.2 to 5.0 mol %, this new catalytic asymmetric transformation provides facile and high-yielding access to highly enantiomerically enriched chiral trifluoromethylated γ-amino acids and γ-lactams.
Collapse
Affiliation(s)
- Bin Hu
- Department of Chemistry Brandeis University Waltham, Massachusetts 02454-9110, United States
| | - Li Deng
- Department of Chemistry Brandeis University Waltham, Massachusetts 02454-9110, United States
| |
Collapse
|
44
|
Heravi MM, Lashaki TB, Fattahi B, Zadsirjan V. Application of asymmetric Sharpless aminohydroxylation in total synthesis of natural products and some synthetic complex bio-active molecules. RSC Adv 2018; 8:6634-6659. [PMID: 35559209 PMCID: PMC9092437 DOI: 10.1039/c7ra12625e] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/30/2018] [Indexed: 01/23/2023] Open
Abstract
This report illustrates the applications of Asymmetric Sharpless Aminohydroxylation (ASAH) in the stereoselective synthesis of vicinal amino alcohols as important intermediates in the total synthesis of complex molecules and natural products with significant biological activities. The ASHA allows the regio- syn-selective synthesis of 1,2-amino alcohols via reaction of alkenes with salts of N-halosulfonamides, -amides and -carbamates employing osmium tetroxide (OsO4) as an efficient catalyst. In this reaction, chirality is induced via the addition of dihydroquinine- and dihydroquinidine as derived chiral ligands.
Collapse
Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran
| | | | - Bahareh Fattahi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran
| | - Vahideh Zadsirjan
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran
| |
Collapse
|
45
|
Xu L, Han S, Yan L, Wang H, Peng H, Chen F. Novel amide-functionalized chloramphenicol base bifunctional organocatalysts for enantioselective alcoholysis of meso-cyclic anhydrides. Beilstein J Org Chem 2018; 14:309-317. [PMID: 29507636 PMCID: PMC5815282 DOI: 10.3762/bjoc.14.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/22/2018] [Indexed: 12/26/2022] Open
Abstract
A family of novel chloramphenicol base-amide organocatalysts possessing a NH functionality at C-1 position as monodentate hydrogen bond donor were developed and evaluated for enantioselective organocatalytic alcoholysis of meso-cyclic anhydrides. These structural diversified organocatalysts were found to induce high enantioselectivity in alcoholysis of anhydrides and was successfully applied to the asymmetric synthesis of (S)-GABOB.
Collapse
Affiliation(s)
- Lingjun Xu
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Shuwen Han
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Linjie Yan
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Haifeng Wang
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Haihui Peng
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Fener Chen
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| |
Collapse
|
46
|
Noble A, Mega RS, Pflästerer D, Myers EL, Aggarwal VK. Visible-Light-Mediated Decarboxylative Radical Additions to Vinyl Boronic Esters: Rapid Access to γ-Amino Boronic Esters. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712186] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Adam Noble
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Riccardo S. Mega
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Daniel Pflästerer
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Eddie L. Myers
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | | |
Collapse
|
47
|
Hu B, Deng L. Catalytic Asymmetric Synthesis of Trifluoromethylated γ-Amino Acids through the Umpolung Addition of Trifluoromethyl Imines to Carboxylic Acid Derivatives. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710915] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bin Hu
- Department of Chemistry; Brandeis University; Waltham MA 02454-9110 USA
| | - Li Deng
- Department of Chemistry; Brandeis University; Waltham MA 02454-9110 USA
| |
Collapse
|
48
|
González MA, Estévez AM, Campos M, Estévez JC, Estévez RJ. Protocol for the Incorporation of γ-Amino Acids into Peptides: Application to (-)-Shikimic Acid Based 2-Amino-Methylcyclohexanecarboxylic Acids. J Org Chem 2018; 83:1543-1550. [PMID: 29297227 DOI: 10.1021/acs.joc.7b02671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The first example of a new protocol for the incorporation of γ-amino acids into peptides is reported. It involved a shikimic acid based stereoselective synthesis polyhydroxylated-2-nitromethylcyclohexanecarboxylic acids, which were directly incorporated into peptides.
Collapse
Affiliation(s)
- Marcos A González
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Campus Vida, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Amalia M Estévez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Campus Vida, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - María Campos
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Campus Vida, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Juan C Estévez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Campus Vida, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Ramón J Estévez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Campus Vida, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| |
Collapse
|
49
|
Zhong Y, Hong S, Cai Z, Ma S, Jiang X. Direct β-selectivity of α,β-unsaturated γ-butyrolactam for asymmetric conjugate additions in an organocatalytic manner. RSC Adv 2018; 8:28874-28878. [PMID: 35548007 PMCID: PMC9084493 DOI: 10.1039/c8ra05264f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 07/05/2018] [Indexed: 01/06/2023] Open
Abstract
The β-selective asymmetric addition of γ-butyrolactam with cyclic imino esters catalyzed by a bifunctional chiral tertiary amine has been developed, which provides an efficient access to optically active β-position functionalized pyrrolidin-2-one derivatives in both high yield and enantioselectivity (up to 78% yield and 95 : 5 er). This is the first catalytic method to access chiral β-functionalized pyrrolidin-2-one via a direct organocatalytic approach. The asymmetric addition of γ-butyrolactam with cyclic imino esters catalyzed by (DHQD)2AQN has been developed, which provides an access to β-position functionalized pyrrolidin-2-one derivatives in high levels yield and enantioselectivity.![]()
Collapse
Affiliation(s)
- Yuan Zhong
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou
- China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
| | - Sihua Hong
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou
- China
| | - Zhengjun Cai
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou
- China
| | - Shixiong Ma
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
- China
| | - Xianxing Jiang
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou
- China
| |
Collapse
|
50
|
Di Gregorio G, Mari M, Bartolucci S, Bartoccini F, Piersanti G. Divergent reactions of oxindoles with amino alcohols via the borrowing hydrogen process: oxindole ring opening vs. C3 alkylation. Org Chem Front 2018. [DOI: 10.1039/c8qo00184g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxindoles react with N-acetyl amino alcohols to form tryptamine-derived oxindoles, whereas analogous reactions with N-alkyl amino alcohols lead to lactam formation via a relatively mild borrowing hydrogen process.
Collapse
Affiliation(s)
- Giovanni Di Gregorio
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Michele Mari
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Silvia Bartolucci
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| |
Collapse
|