1
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Kundu S, Maji MS. Solution-Phase Late-Stage Chemoselective Photocatalytic Removal of Sulfonyl and Phenacyl Groups in Peptides. Chemistry 2024; 30:e202400033. [PMID: 38345998 DOI: 10.1002/chem.202400033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Indexed: 03/07/2024]
Abstract
Herein, BPC catalyzed visible-light-triggered target-specific late-stage solution phase desulfonylation from tryptophan in oligopeptides is portrayed by overcoming the isolation issue up to octamers. This robust and mild method is highly predictable and chemoselective, tolerating myriad of functional groups in aza-heteroaromatics and peptides. Interestingly, reductive desulfonylation is also amenable to biologically significant reactive histidine and tyrosine side chains, signifying the versatility of the strategy. Additional efficacy of BPC is demonstrated by solution phase phenacyl deprotection from C-terminal in peptides. Furthermore, excellent catalyst loading of 0.5 mol% and recyclability demonstrate the practical utility and applicability of this strategy.
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Affiliation(s)
- Samrat Kundu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
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2
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Rosier N, Mönnich D, Nagl M, Schihada H, Sirbu A, Konar N, Reyes-Resina I, Navarro G, Franco R, Kolb P, Annibale P, Pockes S. Shedding Light on the D 1 -Like Receptors: A Fluorescence-Based Toolbox for Visualization of the D 1 and D 5 Receptors. Chembiochem 2024; 25:e202300658. [PMID: 37983731 DOI: 10.1002/cbic.202300658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/08/2023] [Indexed: 11/22/2023]
Abstract
Dopamine D1 -like receptors are the most abundant type of dopamine receptors in the central nervous system and, even after decades of discovery, still highly interesting for the study of neurological diseases. We herein describe the synthesis of a new set of fluorescent ligands, structurally derived from D1 R antagonist SCH-23390 and labeled with two different fluorescent dyes, as tool compounds for the visualization of D1 -like receptors. Pharmacological characterization in radioligand binding studies identified UR-NR435 (25) as a high-affinity ligand for D1 -like receptors (pKi (D1 R)=8.34, pKi (D5 R)=7.62) with excellent selectivity towards D2 -like receptors. Compound 25 proved to be a neutral antagonist at the D1 R and D5 R in a Gs heterotrimer dissociation assay, an important feature to avoid receptor internalization and degradation when working with whole cells. The neutral antagonist 25 displayed rapid association and complete dissociation to the D1 R in kinetic binding studies using confocal microscopy verifying its applicability for fluorescence microscopy. Moreover, molecular brightness studies determined a single-digit nanomolar binding affinity of the ligand, which was in good agreement with radioligand binding data. For this reason, this fluorescent ligand is a useful tool for a sophisticated characterization of native D1 receptors in a variety of experimental setups.
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Affiliation(s)
- Niklas Rosier
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Denise Mönnich
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Martin Nagl
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Hannes Schihada
- Department of Pharmaceutical Chemistry, University of Marburg, Marbacher Weg 6, 35037, Marburg, Germany
| | - Alexei Sirbu
- Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany
| | - Nergis Konar
- Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany
| | - Irene Reyes-Resina
- CiberNed, Network Center for Neurodegenerative Diseases, National Spanish Health Institute Carlos III, Madrid, Spain
- Department Biochemistry and Physiology, School of Pharmacy and Food Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Gemma Navarro
- CiberNed, Network Center for Neurodegenerative Diseases, National Spanish Health Institute Carlos III, Madrid, Spain
- Department Biochemistry and Physiology, School of Pharmacy and Food Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Rafael Franco
- CiberNed, Network Center for Neurodegenerative Diseases, National Spanish Health Institute Carlos III, Madrid, Spain
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Peter Kolb
- Department of Pharmaceutical Chemistry, University of Marburg, Marbacher Weg 6, 35037, Marburg, Germany
| | - Paolo Annibale
- Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany
- School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Scotland, UK
| | - Steffen Pockes
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
- Department of Medicinal Chemistry, Institute for Therapeutics Discovery and Development, University of Minnesota, Minneapolis, MN 55414, USA
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3
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Yang J, Gui J, Mu M, Liu S, Li J, Ren J, Wang Z. Synthesis of Difluoromethylated Carbinols via a HFIP-Promoted Hydroxydifluoromethylation of Aniline, Indole, and Pyrrole Derivatives with Difluoroacetaldehyde Ethyl Hemiacetal. J Org Chem 2023; 88:4790-4798. [PMID: 36989386 DOI: 10.1021/acs.joc.2c02812] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
A hexafluoroisopropanol (HFIP)-promoted hydroxydifluoromethylation of aniline, indole, and pyrrole derivatives with difluoroacetaldehyde ethyl hemiacetal has been developed. This protocol provides a facile and straightforward approach to access diverse difluoromethylated carbinols in good to excellent yields under mild conditions. Furthermore, gram-scale and synthetic derivatization experiments have also been demonstrated.
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Affiliation(s)
- Jianguo Yang
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P.R. China
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Hubei University, Wuhan 430062, P.R. China
| | - Jing Gui
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P.R. China
| | - Miaomiao Mu
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P.R. China
| | - Saimei Liu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Hubei University, Wuhan 430062, P.R. China
| | - Jinshan Li
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P.R. China
| | - Jun Ren
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Hubei University, Wuhan 430062, P.R. China
| | - Zhiming Wang
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P.R. China
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4
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Feng Y, Zhou Z, Wu S, Lin W, Lu S, Pang X, Xia K, He F, Zhang Q, Yang H, Wang Z. Biocatalytic Asymmetric Reduction of a Sterically Hindered α-Bromo Ketone for the Synthesis of Key Intermediates of Olodaterol. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.2c00371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Yahui Feng
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357), Sunshine Lake Pharma Co., Ltd., Dongguan 523871, P. R. China
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Zihong Zhou
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357), Sunshine Lake Pharma Co., Ltd., Dongguan 523871, P. R. China
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shuming Wu
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357), Sunshine Lake Pharma Co., Ltd., Dongguan 523871, P. R. China
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Wei Lin
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Songquan Lu
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Xiaolei Pang
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Ke Xia
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Fang He
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Qin Zhang
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Hu Yang
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
| | - Zhongqing Wang
- School of Pharmacy, Xiangnan University, Chenzhou 423000, Hunan, China
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357), Sunshine Lake Pharma Co., Ltd., Dongguan 523871, P. R. China
- Department of Process Research and Development, HEC Pharm Group, Dongguan 523871, P. R. China
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5
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Shanbhag AP. Stairway to Stereoisomers: Engineering Short- and Medium-Chain Ketoreductases To Produce Chiral Alcohols. Chembiochem 2023; 24:e202200687. [PMID: 36640298 DOI: 10.1002/cbic.202200687] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/14/2023] [Accepted: 01/14/2023] [Indexed: 01/15/2023]
Abstract
The short- and medium-chain dehydrogenase/reductase superfamilies are responsible for most chiral alcohol production in laboratories and industries. In nature, they participate in diverse roles such as detoxification, housekeeping, secondary metabolite production, and catalysis of several chemicals with commercial and environmental significance. As a result, they are used in industries to create biopolymers, active pharmaceutical intermediates (APIs), and are also used as components of modular enzymes like polyketide synthases for fabricating bioactive molecules. Consequently, random, semi-rational and rational engineering have helped transform these enzymes into product-oriented efficient catalysts. The rise of newer synthetic chemicals and their enantiopure counterparts has proved challenging, and engineering them has been the subject of numerous studies. However, they are frequently limited to the synthesis of a single chiral alcohol. The study attempts to defragment and describe hotspots of engineering short- and medium-chain dehydrogenases/reductases for the production of chiral synthons.
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Affiliation(s)
- Anirudh P Shanbhag
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, 700009, India.,Bugworks Research India Pvt. Ltd., C-CAMP, National Centre for Biological Sciences (NCBS-TIFR), Bellary Road, Bangalore, 560003, India
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6
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Biocatalytic hydrogen-transfer to access enantiomerically pure proxyphylline, xanthinol, and diprophylline. Bioorg Chem 2022; 127:105967. [DOI: 10.1016/j.bioorg.2022.105967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/24/2022]
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7
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Musa MM. Alcohol Dehydrogenases with anti-Prelog Stereopreference in Synthesis of Enantiopure Alcohols. Chemistry 2022; 11:e202100251. [PMID: 35191611 PMCID: PMC8973272 DOI: 10.1002/open.202100251] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 02/03/2022] [Indexed: 01/03/2023]
Abstract
Biocatalytic production of both enantiomers of optically active alcohols with high enantiopurities is of great interest in industry. Alcohol dehydrogenases (ADHs) represent an important class of enzymes that could be used as catalysts to produce optically active alcohols from their corresponding prochiral ketones. This review covers examples of the synthesis of optically active alcohols using ADHs that exhibit anti‐Prelog stereopreference. Both wild‐type and engineered ADHs that exhibit anti‐Prelog stereopreference are highlighted.
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Affiliation(s)
- Musa M Musa
- Department of Chemistry Interdisciplinary Research Center for Refining and Advanced Chemicals, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
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8
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González-Granda S, Escot L, Lavandera I, Gotor-Fernández V. Unmasking the Hidden Carbonyl Group Using Gold(I) Catalysts and Alcohol Dehydrogenases: Design of a Thermodynamically-Driven Cascade toward Optically Active Halohydrins. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05216] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio González-Granda
- Organic and Inorganic Chemistry Department, Universidad de Oviedo, Oviedo, 33006 Asturias, Spain
| | - Lorena Escot
- Organic and Inorganic Chemistry Department, Universidad de Oviedo, Oviedo, 33006 Asturias, Spain
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department, Universidad de Oviedo, Oviedo, 33006 Asturias, Spain
| | - Vicente Gotor-Fernández
- Organic and Inorganic Chemistry Department, Universidad de Oviedo, Oviedo, 33006 Asturias, Spain
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9
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García-Ramos M, Lavandera I. Transaminases as suitable catalysts for the synthesis of enantiopure β,β-difluoroamines. Org Biomol Chem 2022; 20:984-988. [PMID: 35040845 DOI: 10.1039/d1ob02346b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Transaminases have shown the ability to catalyze the amination of a series of aliphatic and (hetero)aromatic α,α-difluorinated ketones with high stereoselectivity, thus providing the corresponding β,β-difluoroamines in high isolated yields (55-82%) and excellent enantiomeric excess (>99%). It was also observed that these activated substrates could be quantitatively transformed by employing a small molar excess of the amine donor since this amination process was thermodynamically favored. Selected transformations could be scaled up to 500 mg, showing the robustness of this methodology.
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Affiliation(s)
- Marina García-Ramos
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006 Oviedo, Spain.
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006 Oviedo, Spain.
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10
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Imidazolylacetophenone oxime-based multifunctional neuroprotective agents: Discovery and structure-activity relationships. Eur J Med Chem 2022; 228:114031. [PMID: 34875520 DOI: 10.1016/j.ejmech.2021.114031] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) possesses a complex pathogenetic mechanism. Nowadays, multitarget agents are considered to have potential in effectively treating AD via triggering molecules in functionally complementary pathways at the same time. Here, based on the screening (∼1400 compounds) against neuroinflammation, an imidazolylacetophenone oxime ether (IOE) was discovered as a novel hit. In order to obtain SARs, a series of imidazolylacetophenone oxime derivatives were constructed, and their C=N bonds were confirmed as the Z configuration by single crystals. These derivatives exhibited potential multifunctional neuroprotective effects including anti-neuroinflammatory, antioxidative damage, metal-chelating, inhibition of acetylcholinesterase (AChE) properties. Among these derivatives, compound 12i displayed the most potent inhibitory activity against nitric oxide (NO) production with EC50 value of 0.57 μM 12i can dose-dependently suppress the expression of iNOS and COX-2 but not change the expression of HO-1 protein. Moreover, 12i exhibited evidently neuroprotective effects on H2O2-induced PC12 cells damage and ferroptosis without cytotoxicity at 10 μM, as well as selectively metal chelating properties via chelating Cu2+. In addition, 12i showed a mixed-type inhibitory effect on AChE in vitro. The structure-activity relationships (SARs) analysis indicated that dioxolane groups on benzene ring and rigid oxime ester can improve the activity. Parallel artificial membrane permeation assay (PAMPA) also verified that 12i can overcome the blood-brain barrier (BBB). Overall, this is the first report on imidazolylacetophenone oxime-based multifunctional neuroprotective effects, suggesting that this type of compounds might be novel multifunctional agents against AD.
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11
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Bai D, Wu F, Chang L, Wang M, Wu H, Chang J. Highly Regio‐ and Enantioselective Hydrosilylation of
gem
‐Difluoroalkenes by Nickel Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Dachang Bai
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P.R. China
| | - Fen Wu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 China
| | - Lingna Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 China
| | - Manman Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 China
| | - Hao Wu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 China
| | - Junbiao Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 China
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12
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Yuan F, Zhao Y, Guo Q, Yin F, Lai J, Nian B, Zhang M, Tang E. Synthesis of 1-[1-(Amino)cyclopropyl]ketones by Tandem Reaction Involving Vinyl Selenium Salt. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202111015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Bai D, Wu F, Chang L, Wang M, Wu H, Chang J. Highly Regio- and Enantioselective Hydrosilylation of gem-Difluoroalkenes via Nickel Catalysis. Angew Chem Int Ed Engl 2021; 61:e202114918. [PMID: 34957676 DOI: 10.1002/anie.202114918] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Indexed: 11/10/2022]
Abstract
The synthesis of small organic molecules with a difluoromethylated stereocenter is particularly attractive in drug discovery. Herein, we developed an efficient method for the direct generation of difluoromethylated stereocenters through Ni(0)-catalyzed regio - and enantioselective hydrosilylation of gem -difluoroalkenes. The reaction also represents the enantioselective construction of carbon(sp 3 )-silicon bonds with nickel catalysis, which provides an atom- and step-economical synthesis route of high-value optically active α-difluoromethylsilanes. This protocol features with readily available starting materials and commercial chiral catalysis, broad substrates spanning a range of functional groups with high yield (up to 99% yield) and excellent enantioselectivity (up to 96% ee). The enantioenriched products undergo a variety of stereospecific transformations. Preliminary mechanistic studies were performed.
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Affiliation(s)
- Dachang Bai
- Henan Normal University, school of chemistry and chemical engineering, 46# jianshe road, 456007, xinxiang, CHINA
| | - Fen Wu
- Henan Normal University, School of Chemistry and Chemical Engineering, CHINA
| | - Lingna Chang
- Henan Normal University, School of Chemistry and Chemical Engineering, CHINA
| | - Manman Wang
- Henan Normal University, School of Chemistry and Chemical Engineering, CHINA
| | - Hao Wu
- Henan Normal University, School of Chemistry and Chemical Engineering, CHINA
| | - Junbiao Chang
- Henan Normal University, School of Chemistry and Chemical Engineering, CHINA
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14
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Broese T, Ehlers P, Langer P, von Langermann J. Chemoenzymatic Asymmetric Synthesis of Pyridine-Based α-Fluorinated Secondary Alcohols. Chembiochem 2021; 22:3314-3318. [PMID: 34520599 PMCID: PMC9293303 DOI: 10.1002/cbic.202100392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/09/2021] [Indexed: 11/25/2022]
Abstract
Fluoro‐substituted and heteroaromatic compounds are valuable intermediates for a variety of applications in pharma‐ and agrochemistry and synthetic chemistry. This study investigates the chemoenzymatic preparation of chiral alcohols bearing a heteroaromatic ring with an increasing degree of fluorination in α‐position. Starting from readily available picoline derivatives prochiral α‐halogenated acyl moieties were introduced with excellent selectivity and 64–95 % yield. The formed carbonyl group was subsequently reduced to the corresponding alcohols using the alcohol dehydrogenase from Lactobacillus kefir, yielding an enantiomeric excess of 95–>99 % and up to 98 % yield.
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Affiliation(s)
- Timo Broese
- Institute of Chemistry, Biocatalytic Synthesis Group, University of Rostock, Albert-Einstein-Str. 3 A, 18059, Rostock, Germany.,Graforce GmbH, Johann-Hittorf-Str. 8, 12489, Berlin, Germany
| | - Peter Ehlers
- Institute of Chemistry, Organic Chemistry, University of Rostock, Albert-Einstein-Str. 3 A, 18059, Rostock, Germany
| | - Peter Langer
- Institute of Chemistry, Organic Chemistry, University of Rostock, Albert-Einstein-Str. 3 A, 18059, Rostock, Germany
| | - Jan von Langermann
- Institute of Chemistry, Biocatalytic Synthesis Group, University of Rostock, Albert-Einstein-Str. 3 A, 18059, Rostock, Germany
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15
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García‐Ramos M, Cuetos A, Kroutil W, Grogan G, Lavandera I. The Reactivity of α‐Fluoroketones with PLP Dependent Enzymes: Transaminases as Hydrodefluorinases. ChemCatChem 2021. [DOI: 10.1002/cctc.202100901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marina García‐Ramos
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Aníbal Cuetos
- York Structural Biology Laboratory Department of Chemistry University of York Heslington York YO10 5DD UK
- ENANTIA C/ Baldiri Reixac, 10 08028 Barcelona Spain
| | - Wolfgang Kroutil
- Institute of Chemistry NAWI Graz Field of Excellence BioHealth University of Graz Heinrichstrasse 28 8010 Graz Austria
| | - Gideon Grogan
- York Structural Biology Laboratory Department of Chemistry University of York Heslington York YO10 5DD UK
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
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16
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Kreutter D, Schwaller P, Reymond JL. Predicting enzymatic reactions with a molecular transformer. Chem Sci 2021; 12:8648-8659. [PMID: 34257863 PMCID: PMC8246114 DOI: 10.1039/d1sc02362d] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 05/24/2021] [Indexed: 11/29/2022] Open
Abstract
The use of enzymes for organic synthesis allows for simplified, more economical and selective synthetic routes not accessible to conventional reagents. However, predicting whether a particular molecule might undergo a specific enzyme transformation is very difficult. Here we used multi-task transfer learning to train the molecular transformer, a sequence-to-sequence machine learning model, with one million reactions from the US Patent Office (USPTO) database combined with 32 181 enzymatic transformations annotated with a text description of the enzyme. The resulting enzymatic transformer model predicts the structure and stereochemistry of enzyme-catalyzed reaction products with remarkable accuracy. One of the key novelties is that we combined the reaction SMILES language of only 405 atomic tokens with thousands of human language tokens describing the enzymes, such that our enzymatic transformer not only learned to interpret SMILES, but also the natural language as used by human experts to describe enzymes and their mutations.
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Affiliation(s)
- David Kreutter
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Philippe Schwaller
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern Freiestrasse 3 3012 Bern Switzerland
- IBM Research Europe Säumerstrasse 4 8803 Rüschlikon Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern Freiestrasse 3 3012 Bern Switzerland
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17
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Gao F, Guo Y, Sun M, Wang Y, Yang C, Wang Y, Wang K, Yan W. Catalytic Asymmetric Construction of Tertiary Carbon Centers Featuring an α-Difluoromethyl Group with CF 2H-CH 2-NH 2 as the "Building Block". Org Lett 2021; 23:2584-2589. [PMID: 33740843 DOI: 10.1021/acs.orglett.1c00497] [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
We report here for the first time a novel difluoromethylated ketimine building block condensed by thioisatin and difluoroethylamine, offering efficient access to a broad range of enantioenriched products bearing difluoroethylamine units (27 examples, ≤98% yield, >99% ee) in the presence of quinine-derived squaramide. Further transformation of the intermediate would generate a variety of versatile functional blocks like α-difluoromethyl amines, β-amino acid, and β-diamine with retention of the enantiomeric excess at the difluoromethyl-bound carbon.
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Affiliation(s)
- Fengyun Gao
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yifei Guo
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Mengmeng Sun
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yalan Wang
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Changyan Yang
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yuqiang Wang
- The 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
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Wenjin Yan
- The Institute of Pharmacology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
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18
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Gao F, Li B, Wang Y, Chen Q, Li Y, Wang K, Yan W. Stereoselective synthetic strategies of stereogenic carbon centers featuring a difluoromethyl group. Org Chem Front 2021. [DOI: 10.1039/d1qo00032b] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The scope of this review is to summarize routine asymmetric synthetic methods which enable the effective and selective introduction of difluoromethyl groups into the desired compounds, providing a general introduction to this important research area.
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Affiliation(s)
- Fengyun Gao
- The Institute of Pharmacology
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou 730000
| | - Boyu Li
- Department of Chemistry
- University of Liverpool
- Liverpool L69 7ZD
- UK
| | - Yalan Wang
- The Institute of Pharmacology
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou 730000
| | - Qushuo Chen
- The Institute of Pharmacology
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou 730000
| | - Yongzhen Li
- The Institute of Pharmacology
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou 730000
| | - Kairong Wang
- The Institute of Pharmacology
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou 730000
| | - Wenjin Yan
- The Institute of Pharmacology
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou 730000
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19
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Wang X. Reduction of Trifluoromethyl Ketones with Diethyl Zinc Catalyzed by Chiral Monophosphoryl Protected Diamine. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202102048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Wang H, Zheng M, Guo H, Huang G, Cheng Z, Rexit AA. Selective Debromination of α,α,α‐Tribromomethylketones with HBr–H
2
O Reductive Catalytic System. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hui Wang
- Department of Chemistry Xinjiang Normal University 830054 Urumqi China
| | - Meng‐Xia Zheng
- Department of Chemistry Xinjiang Normal University 830054 Urumqi China
| | - Hongmei Guo
- Key Laboratory of Plant Resources and Chemistry of Arid Zone Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences 830011 Urumqi China
| | - Guozheng Huang
- Key Laboratory of Plant Resources and Chemistry of Arid Zone Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences 830011 Urumqi China
| | - Zhao Cheng
- School of Pharmacy Xi'an Medical University 710021 Xi'an China
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21
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Fan J, Peng Y, Xu W, Wang A, Xu J, Yu H, Lin X, Wu Q. Double Enzyme-Catalyzed One-Pot Synthesis of Enantiocomplementary Vicinal Fluoro Alcohols. Org Lett 2020; 22:5446-5450. [PMID: 32635737 DOI: 10.1021/acs.orglett.0c01825] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A double-enzyme-catalyzed strategy for the synthesis of enantiocomplementary vicinal fluoro alcohols through a one-pot, three-step process including lipase-catalyzed hydrolysis, spontaneous decarboxylative fluorination, and subsequent ketoreductase-catalyzed reduction was developed. With this approach, β-ketonic esters were converted to the corresponding vicinal fluoro alcohols with high isolated yields (up to 92%) and stereoselectivities (up to 99%). This new cascade process addresses some issues in comparison with traditional methods such as environmentally hazardous reaction conditions and low stereoselectivity outcome.
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Affiliation(s)
- Jiajie Fan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Yongzhen Peng
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Weihua Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Anlin Wang
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Jian Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Huilei Yu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Xianfu Lin
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Qi Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
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22
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Yi N, Ouyang M, Liu H, Yan M, Wen X, Xiong Y, Yi B. Thiocyanation of α-amino carbonyl compounds for the synthesis of aromatic thiocyanates. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820923553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A procedure for K2S2O8-mediated thiocyanation of α-amino carbonyl compounds has been developed for the synthesis of aromatic thiocyanates. A series of α-amino carbonyl compounds have been investigated, and the desired products are obtained in 74%–93% yields. This strategy has the advantages of simple reaction conditions without use of a transition-metal catalyst, high regioselectivity, and high efficiency. Moreover, we found that arylamine thiocyanates can also be obtained from α-amino carbonyl compounds and potassium thiocyanate in the presence of CoCl2·6H2O, I2, and dimethyl sulfoxide through the cleavage of the C–N bond. To explore the reaction mechanism, we designed several control experiments and proposed a possible mechanism using the experimental results and related literature reports.
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Affiliation(s)
- Niannian Yi
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
| | - Mingjing Ouyang
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
| | - Huimin Liu
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
| | - Miao Yan
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
| | - Xiaoyong Wen
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
| | - Yi Xiong
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
| | - Bing Yi
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P.R. China
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23
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Ding L, Han S, Chen X, Li L, Li J, Zou D, Wu Y, Wu Y. An efficient protocol for the synthesis of monofluoroalkylated (hetero)arenes via Pd-catalyzed α-(hetero)arylation of α-fluoroketones with (hetero)aryl bromides. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Ibn Majdoub Hassani FZ, Amzazi S, Kreit J, Lavandera I. Deep Eutectic Solvents as Media in Alcohol Dehydrogenase‐Catalyzed Reductions of Halogenated Ketones. ChemCatChem 2019. [DOI: 10.1002/cctc.201901582] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Fatima Zohra Ibn Majdoub Hassani
- Biochemistry and Immunology LaboratoryFaculty of SciencesMohammed V University BP 1014 Avenue Ibn Batouta Agdal Rabat 10090 Morocco
- Organic and Inorganic Chemistry DepartmentUniversity of Oviedo Avenida Julián Clavería 8 Oviedo 33006 Spain
| | - Saaid Amzazi
- Biochemistry and Immunology LaboratoryFaculty of SciencesMohammed V University BP 1014 Avenue Ibn Batouta Agdal Rabat 10090 Morocco
| | - Joseph Kreit
- Biochemistry and Immunology LaboratoryFaculty of SciencesMohammed V University BP 1014 Avenue Ibn Batouta Agdal Rabat 10090 Morocco
| | - Iván Lavandera
- Organic and Inorganic Chemistry DepartmentUniversity of Oviedo Avenida Julián Clavería 8 Oviedo 33006 Spain
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25
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Yu P, Wang Y, Zeng Z, Chen Y. Metal-Free C-N or C-C Bond Cleavages of α-Azido Ketones: An Oxidative-Amidation Strategy for the Synthesis of α-Ketothioamides and Amides. J Org Chem 2019; 84:14883-14891. [PMID: 31608627 DOI: 10.1021/acs.joc.9b01777] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A novel metal-free oxidative-amidation strategy for the synthesis of α-ketothioamides and amides from α-azido ketones was developed. The C-H bond thionation of α-azido ketones with elemental sulfur could form α-ketothioacyl azide, which was then nucleophilically attacked by amines, causing the cleavage of the C-N bond to afford α-ketothioamides, while amides could be formed with the release of nitrogen gas and cyano anion in the presence of PhI(OAc)2 by selective C-C bond cleavage.
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Affiliation(s)
- Pei Yu
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430073 , China
| | - Yuwei Wang
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430073 , China
| | - Zhigang Zeng
- School of Nuclear Technology and Chemistry & Biology , Hubei University of Science and Technology , Xianning 437100 , China
| | - Yunfeng Chen
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430073 , China
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26
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Busch H, Hagedoorn PL, Hanefeld U. Rhodococcus as A Versatile Biocatalyst in Organic Synthesis. Int J Mol Sci 2019; 20:E4787. [PMID: 31561555 PMCID: PMC6801914 DOI: 10.3390/ijms20194787] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022] Open
Abstract
The application of purified enzymes as well as whole-cell biocatalysts in synthetic organic chemistry is becoming more and more popular, and both academia and industry are keen on finding and developing novel enzymes capable of performing otherwise impossible or challenging reactions. The diverse genus Rhodococcus offers a multitude of promising enzymes, which therefore makes it one of the key bacterial hosts in many areas of research. This review focused on the broad utilization potential of the genus Rhodococcus in organic chemistry, thereby particularly highlighting the specific enzyme classes exploited and the reactions they catalyze. Additionally, close attention was paid to the substrate scope that each enzyme class covers. Overall, a comprehensive overview of the applicability of the genus Rhodococcus is provided, which puts this versatile microorganism in the spotlight of further research.
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Affiliation(s)
- Hanna Busch
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Peter-Leon Hagedoorn
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Ulf Hanefeld
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
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27
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Huang WS, Delcourt ML, Pannecoucke X, Charette AB, Poisson T, Jubault P. Catalytic Asymmetric Synthesis of α,α-Difluoromethylated and α-Fluoromethylated Tertiary Alcohols. Org Lett 2019; 21:7509-7513. [PMID: 31497967 DOI: 10.1021/acs.orglett.9b02792] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The catalytic asymmetric synthesis of α,α-difluoromethylated tertiary alcohols is described, using an asymmetric dihydroxylation reaction. This protocol using either the AD-mix-α or AD-mix-β allowed an easy access to these valuable fluorinated chiral building blocks, which have been obtained with excellent yields and er. In addition, the reaction was extended to the α-fluoromethylated analogues.
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Affiliation(s)
- Wei-Sheng Huang
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen , France
| | - Marie-Léonie Delcourt
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen , France
| | - Xavier Pannecoucke
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen , France
| | - André B Charette
- Centre in Green Chemistry and Catalysis, Faculty of Arts and Sciences, Department of Chemistry , Université de Montréal , P.O. Box 6128, Station Downtown , Montréal , Québec H3C 3J7 , Canada
| | - Thomas Poisson
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen , France.,Institut Universitaire de France , 1 rue Descartes , 75231 Paris , France
| | - Philippe Jubault
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen , France
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28
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Batisse C, Céspedes Dávila MF, Castello M, Messara A, Vivet B, Marciniak G, Panossian A, Hanquet G, Leroux FR. Efficient asymmetric synthesis of aryl difluoromethyl sulfoxides and their use to access enantiopure α-difluoromethyl alcohols. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Li JL, Lin E, Han XL, Li Q, Wang H. Synthesis of α-Fluorinated Imides via Direct Fluorohydroxylation of Ynamides. Org Lett 2019; 21:4255-4258. [PMID: 31095399 DOI: 10.1021/acs.orglett.9b01428] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A practical synthesis of α-fluorinated imides via the catalyst-free fluorohydroxylation of ynamides is developed. The reaction employs commercially available Selectfluor (F-TEDA-BF4) and H2O as the fluorine and hydroxyl sources, respectively. A broad range of aryl- or alkyl-substituted ynamides were well applicable to the reaction with good functional group tolerance under simple and mild reaction conditions. The synthetic utility of the α-fluoroimide products was demonstrated by several value-added transformations. Preliminary mechanistic studies were conducted.
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Affiliation(s)
- Ji-Lin Li
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - E Lin
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Xiang-Lei Han
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Qingjiang Li
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Honggen Wang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
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30
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Batisse C, Panossian A, Hanquet G, Leroux FR. Access towards enantiopure α,α-difluoromethyl alcohols by means of sulfoxides as traceless chiral auxiliaries. Chem Commun (Camb) 2018; 54:10423-10426. [PMID: 30091753 DOI: 10.1039/c8cc05571h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new methodology to access enantiopure α,α-difluoromethyl alcohols is hereby being described. The strategy relies on the use of an enantiopure aryl α,α-difluoromethyl sulfoxide employed as chiral and removable auxiliary for the stereoselective difluoromethylation of carbonyl derivatives. The obtained α,α-difluoro-β-hydroxysulfoxides displayed unprecedented diastereomeric ratios.
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Affiliation(s)
- Chloé Batisse
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
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31
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Chen X, Zhou Y, Hong M, Ling Y, Yin D, Wang S, Zhang X, Rao W. Gold(I)-Catalyzed Tandem Cycloisomerization and Fluorination of 1,3(4)-Enyne Esters with NFSI: One-Pot Assembly of 5-Fluoro- Cyclopentenones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800701] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Xianxiao Chen
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Yuanyuan Zhou
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Mei Hong
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Yuan Ling
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Dongliang Yin
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Shifa Wang
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Xiaoxiang Zhang
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
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32
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Sedgwick DM, López I, Román R, Kobayashi N, Okoromoba OE, Xu B, Hammond GB, Barrio P, Fustero S. Metal-Free and User-Friendly Regioselective Hydroxyfluorination of Olefins. Org Lett 2018; 20:2338-2341. [PMID: 29624064 PMCID: PMC6237092 DOI: 10.1021/acs.orglett.8b00681] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple, user-friendly, metal-free protocol for the regioselective anti-Markovnikov hydrofluorination of olefins using readily available and inexpensive reagents has been developed. This new approach displays a broader scope than previously reported methodologies and has been applied to the late-stage fluorination of a complex molecule, giving rise to a fluorosteroid derivative. The stereochemistry of the process has also been studied in some detail.
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Affiliation(s)
- Daniel M. Sedgwick
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
- Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Inés López
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Raquel Román
- Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Nanako Kobayashi
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Otome E. Okoromoba
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology Donghua University Shanghai 201620 (China)
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Pablo Barrio
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
- Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
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33
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Thai YC, Szekrenyi A, Qi Y, Black GW, Charnock SJ, Fessner WD. Fluorogenic kinetic assay for high-throughput discovery of stereoselective ketoreductases relevant to pharmaceutical synthesis. Bioorg Med Chem 2018; 26:1320-1326. [DOI: 10.1016/j.bmc.2017.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/30/2017] [Accepted: 05/11/2017] [Indexed: 12/26/2022]
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34
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Chen X, Zhang H, Feng J, Wu Q, Zhu D. Molecular Basis for the High Activity and Enantioselectivity of the Carbonyl Reductase from Sporobolomyces salmonicolor toward α-Haloacetophenones. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00591] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xi Chen
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Hongliu Zhang
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Jinhui Feng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Qiaqing Wu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Dunming Zhu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
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35
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Lv Z, Song C, Niu Y, Li Q, Ye XS. Synthesis of N-Substituted Iminosugar Derivatives and Evaluation of Their Immunosuppressive Activities. ChemMedChem 2018; 13:338-351. [PMID: 29323471 DOI: 10.1002/cmdc.201700706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/24/2017] [Indexed: 01/28/2023]
Abstract
It is important to find more effective and safer immunosuppressants, because clinically used immunosuppressive agents have significant side effects. A series of N-substituted iminosugar derivatives were designed and synthesized, and their immunosuppressive effects were evaluated by the CCK-8 assay. The results revealed that iminosugars 10 e and 10 i, that is, (3R,4S)-1-(4-heptyloxylphenylethyl)pyrrolidine-3,4-diol and (3R,4S)-1-[2-(2-chloro-4-(p-tolylthio)-phenyl-1-yl)ethyl]pyrrolidine-3,4-diol, respectively, exhibited the strongest inhibitory effects on mouse splenocyte proliferation (IC50 =2.16 and 2.48 μm, respectively), whereas the iminosugars containing an amide group near the hydrophilic head (compounds 10 j-n) exhibited no inhibitory effects. Further studies revealed that the inhibitory effects on splenocyte proliferation may have come from the suppression of both IFN-γ and IL-4 cytokines. Our results suggest that synthetic iminosugars, especially compounds 10 e and 10 i, hold potential as immunosuppressive agents.
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Affiliation(s)
- Zhuo Lv
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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36
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Yuki Y, Touge T, Nara H, Matsumura K, Fujiwhara M, Kayaki Y, Ikariya T. Selective Asymmetric Transfer Hydrogenation of α-Substituted Acetophenones with Bifunctional Oxo-Tethered Ruthenium(II) Catalysts. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701227] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yamato Yuki
- Corporate Research & Development Division; Takasago International Corporation; 1-4-11 Nishi-Yawata Hiratsuka, Kanagawa 254-0043 Japan
| | - Taichiro Touge
- Corporate Research & Development Division; Takasago International Corporation; 1-4-11 Nishi-Yawata Hiratsuka, Kanagawa 254-0043 Japan
| | - Hideki Nara
- Corporate Research & Development Division; Takasago International Corporation; 1-4-11 Nishi-Yawata Hiratsuka, Kanagawa 254-0043 Japan
| | - Kazuhiko Matsumura
- Corporate Research & Development Division; Takasago International Corporation; 1-4-11 Nishi-Yawata Hiratsuka, Kanagawa 254-0043 Japan
| | - Mitsuhiko Fujiwhara
- Corporate Research & Development Division; Takasago International Corporation; 1-4-11 Nishi-Yawata Hiratsuka, Kanagawa 254-0043 Japan
| | - Yoshihito Kayaki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology; Tokyo Institute of Technology; 2-12-1-E4-1 O-okayama Meguro-ku, Tokyo 152-8552 Japan
| | - Takao Ikariya
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology; Tokyo Institute of Technology; 2-12-1-E4-1 O-okayama Meguro-ku, Tokyo 152-8552 Japan
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37
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Li Y, Jiang X, Zhao C, Fu X, Xu X, Tang P. Silver-Catalyzed Anti-Markovnikov Hydroxyfluorination of Styrenes. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03529] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Pingping Tang
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
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38
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Naveen N, Balamurugan R. Catalyst free synthesis of α-fluoro-β-hydroxy ketones/α-fluoro-ynols via electrophilic fluorination of tertiary propargyl alcohols using Selectfluor™ (F-TEDA-BF4). Org Biomol Chem 2017; 15:2063-2072. [DOI: 10.1039/c7ob00140a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile access to α-fluoro-β-hydroxyketones via electrophilic fluorination.
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39
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Lenz M, Meisner J, Quertinmont L, Lutz S, Kästner J, Nestl BM. Asymmetric Ketone Reduction by Imine Reductases. Chembiochem 2016; 18:253-256. [PMID: 27911981 DOI: 10.1002/cbic.201600647] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Indexed: 11/10/2022]
Abstract
The rapidly growing area of asymmetric imine reduction by imine reductases (IREDs) has provided alternative routes to chiral amines. Here we report the expansion of the reaction scope of IREDs by showing the stereoselective reduction of 2,2,2-trifluoroacetophenone. Assisted by an in silico analysis of energy barriers, we evaluated asymmetric hydrogenations of carbonyls and imines while considering the influence of substrate reactivity on the chemoselectivity of this novel class of reductases. We report the asymmetric reduction of C=N as well as C=O bonds catalysed by members of the IRED enzyme family.
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Affiliation(s)
- Maike Lenz
- Institute of Technical Biochemistry, Universitaet Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
| | - Jan Meisner
- Institute for Theoretical Chemistry, Universitaet Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Leann Quertinmont
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Stefan Lutz
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Johannes Kästner
- Institute for Theoretical Chemistry, Universitaet Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Bettina M Nestl
- Institute of Technical Biochemistry, Universitaet Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
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40
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Zhou J, Fang X, Shao T, Yang X, Wu F. Palladium-catalyzed direct mono-α-arylation of α-fluoroketones with aryl halides or phenyl triflate. J Fluor Chem 2016. [DOI: 10.1016/j.jfluchem.2016.09.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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41
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Abstract
An efficient and mild fluorination of vinyl azides for the synthesis of α-fluoroketones is described. The mechanistic studies indicated that a single-electron transfer (SET) and a subsequent fluorine atom transfer process could be involved in the reaction.
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Affiliation(s)
- Shu-Wei Wu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University , 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Feng Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University , 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
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42
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Mondal K, Mondal B, Pan SC. Organocatalytic Redox Isomerization of Electron-Deficient Allylic Alcohols: Synthesis of 1,4-Ketoaldehydes. J Org Chem 2016; 81:4835-40. [DOI: 10.1021/acs.joc.6b00243] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Keshab Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Buddhadeb Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
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43
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Cuetos A, García-Ramos M, Fischereder EM, Díaz-Rodríguez A, Grogan G, Gotor V, Kroutil W, Lavandera I. Catalytic Promiscuity of Transaminases: Preparation of Enantioenriched β-Fluoroamines by Formal Tandem Hydrodefluorination/Deamination. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510554] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Aníbal Cuetos
- York Structural Biology Laboratory, Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | - Marina García-Ramos
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
| | - Eva-Maria Fischereder
- Department of Chemistry, Organic and Bioorganic Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Alba Díaz-Rodríguez
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
- Medicines Research Centre; GlaxoSmithKline R&D Ltd; Gunnels Wood Road Stevenage Hertfordshire SG1 2NY UK
| | - Gideon Grogan
- York Structural Biology Laboratory, Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | - Vicente Gotor
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
| | - Wolfgang Kroutil
- Department of Chemistry, Organic and Bioorganic Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Iván Lavandera
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
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44
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Cuetos A, García-Ramos M, Fischereder EM, Díaz-Rodríguez A, Grogan G, Gotor V, Kroutil W, Lavandera I. Catalytic Promiscuity of Transaminases: Preparation of Enantioenriched β-Fluoroamines by Formal Tandem Hydrodefluorination/Deamination. Angew Chem Int Ed Engl 2016; 55:3144-7. [PMID: 26836037 DOI: 10.1002/anie.201510554] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Indexed: 11/11/2022]
Abstract
Transaminases are valuable enzymes for industrial biocatalysis and enable the preparation of optically pure amines. For these transformations they require either an amine donor (amination of ketones) or an amine acceptor (deamination of racemic amines). Herein transaminases are shown to react with aromatic β-fluoroamines, thus leading to simultaneous enantioselective dehalogenation and deamination to form the corresponding acetophenone derivatives in the absence of an amine acceptor. A series of racemic β-fluoroamines was resolved in a kinetic resolution by tandem hydrodefluorination/deamination, thus giving the corresponding amines with up to greater than 99 % ee. This protocol is the first example of exploiting the catalytic promiscuity of transaminases as a tool for novel transformations.
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Affiliation(s)
- Aníbal Cuetos
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Marina García-Ramos
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain
| | - Eva-Maria Fischereder
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Alba Díaz-Rodríguez
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain.,Medicines Research Centre, GlaxoSmithKline R&D Ltd, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Gideon Grogan
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Vicente Gotor
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain.
| | - Wolfgang Kroutil
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Heinrichstrasse 28, 8010, Graz, Austria.
| | - Iván Lavandera
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain.
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45
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Li J, Li YL, Jin N, Ma AL, Huang YN, Deng J. A Practical Synthesis of α-Fluoroketones in Aqueous Media by Decarboxylative Fluorination of β-Ketoacids. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500282] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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Rauter M, Prokoph A, Kasprzak J, Becker K, Baronian K, Bode R, Kunze G, Vorbrodt HM. Coexpression of Lactobacillus brevis ADH with GDH or G6PDH in Arxula adeninivorans for the synthesis of 1-(R)-phenylethanol. Appl Microbiol Biotechnol 2014; 99:4723-33. [DOI: 10.1007/s00253-014-6297-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 12/02/2014] [Accepted: 12/04/2014] [Indexed: 10/24/2022]
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47
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Reusability of ADH and GDH producing Arxula adeninivorans cells and cell extract for the production of 1-(S)-phenylethanol. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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48
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Tang TX, Liu Y, Wu ZL. Characterization of a robust anti-Prelog short-chain dehydrogenase/reductase ChKRED20 from Chryseobacterium sp. CA49. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.03.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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49
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Yang Q, Mao LL, Yang B, Yang SD. Metal-Free, Efficient Oxyfluorination of Olefins for the Synthesis of α-Fluoroketones. Org Lett 2014; 16:3460-3. [DOI: 10.1021/ol501357w] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Qiang Yang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Liu-Liang Mao
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Bin Yang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shang-Dong Yang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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50
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Kędziora K, Bisogno FR, Lavandera I, Gotor-Fernández V, Montejo-Bernardo J, García-Granda S, Kroutil W, Gotor V. Expanding the Scope of Alcohol Dehydrogenases towards Bulkier Substrates: Stereo- and Enantiopreference for α,α-Dihalogenated Ketones. ChemCatChem 2014. [DOI: 10.1002/cctc.201300834] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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