1
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Kim R, Wu Y, Tong R. Asymmetric total syntheses of sarglamides A, C, D, E, and F. Chem Sci 2024; 15:12856-12860. [PMID: 39148793 PMCID: PMC11322964 DOI: 10.1039/d4sc03553d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 07/08/2024] [Indexed: 08/17/2024] Open
Abstract
Sarglamides A-E were identified as a structurally new class of alkaloids with potential application for inflammation-associated diseases. Reported is the first asymmetric total synthesis of sarglamides A, C, D, E, and F within 7 steps, featuring an intermolecular Diels-Alder cycloaddition of (S)-phellandrene and 1,4-benzoquinone and intramolecular (aza-)Michael addition to construct the tetracyclic core of sarglamides. Importantly, our work demonstrated that the hypothetic Diels-Alder reaction of α-phellandrene with dienophile toussaintine C (or analogues) originally proposed as a biosynthetic pathway was not viable under non-enzymatic conditions. Additionally, we discovered novel and efficient double cyclization (cycloetherification and oxa-Michael cyclization) to construct the core framework of sarglamides E and D. Our concise synthetic strategy might allow rapid access to a library of sarglamide analogues for further evaluation of their bioactivity and mode of action.
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Affiliation(s)
- Ryungwoo Kim
- Department of Chemistry, The Hong Kong University of Science and Technology Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Yanting Wu
- Department of Chemistry, The Hong Kong University of Science and Technology Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Rongbiao Tong
- Department of Chemistry, The Hong Kong University of Science and Technology Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
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2
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Liu L, Li Z, Yang B, Jia X, Wang S. Recent Research Progress on Polyamidoamine-Engineered Hydrogels for Biomedical Applications. Biomolecules 2024; 14:620. [PMID: 38927024 PMCID: PMC11201556 DOI: 10.3390/biom14060620] [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: 04/15/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 06/28/2024] Open
Abstract
Hydrogels are three-dimensional crosslinked functional materials with water-absorbing and swelling properties. Many hydrogels can store a variety of small functional molecules to structurally and functionally mimic the natural extracellular matrix; hence, they have been extensively studied for biomedical applications. Polyamidoamine (PAMAM) dendrimers have an ethylenediamine core and a large number of peripheral amino groups, which can be used to engineer various polymer hydrogels. In this review, an update on the progress of using PAMAM dendrimers for multifunctional hydrogel design was given. The synthesis of these hydrogels, which includes click chemistry reactions, aza-Michael addition, Schiff base reactions, amidation reactions, enzymatic reactions, and radical polymerization, together with research progress in terms of their application in the fields of drug delivery, tissue engineering, drug-free tumor therapy, and other related fields, was discussed in detail. Furthermore, the biomedical applications of PAMAM-engineered nano-hydrogels, which combine the advantages of dendrimers, hydrogels, and nanoparticles, were also summarized. This review will help researchers to design and develop more functional hydrogel materials based on PAMAM dendrimers.
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Affiliation(s)
- Li Liu
- Outpatient Department of Anhui Medical University First Affiliated Hospital, The First Affiliated Hospital of Anhui Medical University, No. 120 Wanshui Road, Hefei High-Tech Zone, Hefei 230000, China
| | - Zhiling Li
- Outpatient Department of Anhui Medical University First Affiliated Hospital, The First Affiliated Hospital of Anhui Medical University, No. 120 Wanshui Road, Hefei High-Tech Zone, Hefei 230000, China
| | - Baiyan Yang
- Outpatient Department of Anhui Medical University First Affiliated Hospital, The First Affiliated Hospital of Anhui Medical University, No. 120 Wanshui Road, Hefei High-Tech Zone, Hefei 230000, China
| | - Xiaoqing Jia
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China
| | - Shige Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China
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3
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Cador A, Tognetti V, Joubert L, Popelier PLA. Aza-Michael Addition in Explicit Solvent: A Relative Energy Gradient-Interacting Quantum Atoms Study. Chemphyschem 2023:e202300529. [PMID: 37728125 DOI: 10.1002/cphc.202300529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/09/2023] [Accepted: 09/17/2023] [Indexed: 09/21/2023]
Abstract
Aza-Michael additions are key reactions in organic synthesis. We investigate, from a theoretical and computational point of view, several examples ranging from weak to strong electrophiles in dimethylsulfoxide treated as explicit solvent. We use the REG-IQA method, which is a quantum topological energy decomposition (Interacting Quantum Atoms, IQA) coupled to a chemical-interpretation calculator (Relative Energy Gradient, REG). We focus on the rate-limiting addition step in order to unravel the different events taking place in this step, and understand the influence of solvent on the reaction, with an eye on predicting the Mayr electrophilicity. For the first time, a link is established between an REG-IQA analysis and experimental values.
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Affiliation(s)
- Aël Cador
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821, Mont St, Aignan Cedex, France
| | - Vincent Tognetti
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821, Mont St, Aignan Cedex, France
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821, Mont St, Aignan Cedex, France
| | - Paul L A Popelier
- Department of Chemistry, The University of Manchester, Manchester, M13 9PL, Great Britain
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4
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Cador A, Hoffmann G, Tognetti V, Joubert L. A theoretical study on aza-Michael additions. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02921-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Townsend P, Farrar EHE, Grayson MN. Eliminating Transition State Calculations for Faster and More Accurate Reactivity Prediction in Sulfa-Michael Additions Relevant to Human Health and the Environment. ACS OMEGA 2022; 7:26945-26951. [PMID: 35936424 PMCID: PMC9352231 DOI: 10.1021/acsomega.2c03739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Fast and accurate computational approaches to predicting reactivity in sulfa-Michael additions are required for high-throughput screening in toxicology (e.g., predicting excess aquatic toxicity and skin sensitization), chemical synthesis, covalent drug design (e.g., targeting cysteine), and data set generation for machine learning. The kinetic glutathione chemoassay is a time-consuming in chemico method used to extract kinetic data in the form of log(k GSH) for organic electrophiles. In this work, we use density functional theory to compare the use of transition states (TSs) and enolate intermediate structures following C-S bond formation in the prediction of log(k GSH) for a diverse group of 1,4 Michael acceptors. Despite the widespread use of transition state calculations in the literature to predict sulfa-Michael reactivity, we observe that intermediate structures show much better performance for the prediction of log(k GSH), are faster to calculate, and easier to obtain than TSs. Furthermore, we show how linear combinations of atomic charges from the isolated Michael acceptors can further improve predictions, even when using inexpensive semiempirical quantum chemistry methods. Our models can be used widely in the chemical sciences (e.g., in the prediction of toxicity relevant to the environment and human health, synthesis planning, and the design of cysteine-targeting covalent inhibitors), and represent a low-cost, sustainable approach to reactivity assessment.
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Affiliation(s)
- Piers
A. Townsend
- Centre
for Sustainable Chemical Technologies, Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Elliot H. E. Farrar
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Matthew N. Grayson
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
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6
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Gummidi L, Muddassar A, Sharma GVM, Murugesh V, Suresh S. Tandem aza-Michael addition-vinylogous aldol condensation: synthesis of N-bridged pyridine fused quinolones. Org Biomol Chem 2022; 20:773-777. [PMID: 34991153 DOI: 10.1039/d1ob02087k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Herein, we present a tandem aza-Michael addition-vinylogous aldol condensation strategy for the synthesis of N-bridged pyridine fused quinolone derivatives from quinolones and ynones. The presented tandem transformation features the construction of C-N and CC bonds in a single operation, under transition metal-free conditions. The wide substrate scope and gram scale synthesis of pyridine fused quinolone derivatives expand the synthetic value of the presented protocol.
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Affiliation(s)
- Lalitha Gummidi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
| | - Altaf Muddassar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
| | - Gangavaram V M Sharma
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
| | - V Murugesh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Surisetti Suresh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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7
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Kolankowski K, Gadomska‐Gajadhur A, Wrzecionek M, Ruśkowski P. Mathematically described model of poly(glycerol maleate) cross‐linking process using triethylenetetramine addition. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Paweł Ruśkowski
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
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8
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Li Z, Choquesillo-Lazarte D, Fraile J, Viñas C, Teixidor F, Planas JG. Rational design of carborane-based Cu 2-paddle wheel coordination polymers for increased hydrolytic stability. Dalton Trans 2021; 51:1137-1143. [PMID: 34939634 DOI: 10.1039/d1dt04065k] [Citation(s) in RCA: 8] [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 unsymmetric carborane-based dicarboxylic linker provided a 1D Cu2-paddle wheel coordination polymer (2) with much higher hydrolytic stability than the corresponding 2D Cu2-paddle wheel polymer (1), obtained from a related more symmetrical carborane-based linker. Both 1 and 2 were used as efficient heterogeneous catalysts for a model aza-Michael reaction but only 2 can be reused several times without significant degradation in catalytic activity.
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Affiliation(s)
- Zhen Li
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain.
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 - Armilla, Granada, Spain
| | - Julio Fraile
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain.
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain.
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain.
| | - José G Planas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain.
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9
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DBU-catalyzed Michael addition of bulky glycine imine to α,β-unsaturated isoxazoles and pyrazolamides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Sharma P, Gupta R, Bansal RK. Recent advances in organocatalytic asymmetric aza-Michael reactions of amines and amides. Beilstein J Org Chem 2021; 17:2585-2610. [PMID: 34760026 PMCID: PMC8551878 DOI: 10.3762/bjoc.17.173] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/27/2021] [Indexed: 11/23/2022] Open
Abstract
Nitrogen-containing scaffolds are ubiquitous in nature and constitute an important class of building blocks in organic synthesis. The asymmetric aza-Michael reaction (aza-MR) alone or in tandem with other organic reaction(s) is an important synthetic tool to form new C-N bond(s) leading to developing new libraries of diverse types of bioactive nitrogen compounds. The synthesis and application of a variety of organocatalysts for accomplishing highly useful organic syntheses without causing environmental pollution in compliance with 'Green Chemistry" has been a landmark development in the recent past. Application of many of these organocatalysts has been extended to asymmetric aza-MR during the last two decades. The present article overviews the literature published during the last 10 years concerning the asymmetric aza-MR of amines and amides catalysed by organocatalysts. Both types of the organocatalysts, i.e., those acting through non-covalent interactions and those working through covalent bond formation have been applied for the asymmetric aza-MR. Thus, the review includes the examples wherein cinchona alkaloids, squaramides, chiral amines, phase-transfer catalysts and chiral bifunctional thioureas have been used, which activate the substrates through hydrogen bond formation. Most of these reactions are accompanied by high yields and enantiomeric excesses. On the other hand, N-heterocyclic carbenes and chiral pyrrolidine derivatives acting through covalent bond formation such as the iminium ions with the substrates have also been included. Wherever possible, a comparison has been made between the efficacies of various organocatalysts in asymmetric aza-MR.
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Affiliation(s)
- Pratibha Sharma
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
| | - Raakhi Gupta
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
| | - Raj Kumar Bansal
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
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11
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Nishino S, Miura M, Hirano K. An umpolung-enabled copper-catalysed regioselective hydroamination approach to α-amino acids. Chem Sci 2021; 12:11525-11537. [PMID: 34567503 PMCID: PMC8409476 DOI: 10.1039/d1sc03692k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 07/27/2021] [Indexed: 01/03/2023] Open
Abstract
A copper-catalysed regio- and stereoselective hydroamination of acrylates with hydrosilanes and hydroxylamines has been developed to afford the corresponding α-amino acids in good yields. The key to regioselectivity control is the use of hydroxylamine as an umpolung, electrophilic amination reagent. Additionally, a judicious choice of conditions involving the CsOPiv base and DTBM-dppbz ligand of remote steric hindrance enables the otherwise challenging C-N bond formation at the α position to the carbonyl. The point chirality at the β-position is successfully controlled by the Xyl-BINAP or DTBM-SEGPHOS chiral ligand with similarly remote steric bulkiness. The combination with the chiral auxiliary, (-)-8-phenylmenthol, also induces stereoselectivity at the α-position to form the optically active unnatural α-amino acids with two adjacent stereocentres.
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Affiliation(s)
- Soshi Nishino
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Masahiro Miura
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita Osaka 565-0871 Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
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12
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Sánchez-Roselló M, Escolano M, Gaviña D, Del Pozo C. Two Decades of Progress in the Asymmetric Intramolecular aza-Michael Reaction. CHEM REC 2021; 22:e202100161. [PMID: 34415097 DOI: 10.1002/tcr.202100161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/22/2021] [Accepted: 08/04/2021] [Indexed: 11/08/2022]
Abstract
The asymmetric intramolecular aza-Michael reaction (IMAMR) is a very convenient strategy for the generation of heterocycles bearing nitrogen-substituted stereocenters. Due to the ubiquitous presence of these skeletons in natural products, the IMAMR has found widespread applications in the total synthesis of alkaloids and biologically relevant compounds. The development of asymmetric versions of the IMAMR are quite recent, most of them reported in this century. The fundamental advances in this field involve the use of organocatalysts. Chiral imidazolidinones, diaryl prolinol derivatives, Cinchone-derived primary amines and quaternary ammonium salts, and BINOL-derived phosphoric acids account for the success of those methodologies. Moreover, the use of N-sulfinyl imines with a dual role, as nitrogen nucleophiles and as chiral auxiliaries, appeared as a versatile mode of performing the asymmetric IMAMR.
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Affiliation(s)
- María Sánchez-Roselló
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Marcos Escolano
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Daniel Gaviña
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Carlos Del Pozo
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
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13
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Li F, Yang Z, Yang Y, Huang Q, Chen X, Li P, Dong M, Li W. Organocatalytic Enantioselective Aza‐Michael Addition of Arylamines to 7‐Methide‐7
H
‐Indoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fushuai Li
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Zhihong Yang
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Yanyan Yang
- Department of Immunology, School of Basic Medicine Qingdao University Qingdao 266021 People's Republic of China
| | - Qiuhong Huang
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Xuling Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 People's Republic of China
| | - Pengfei Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 People's Republic of China
| | - Mingxin Dong
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Wenjun Li
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
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14
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Wang S, Wang S, Song S, Gao Q, Wen C, Zhang Z, Zheng L, Xiang J. Modular and Stereoselective Approach to Highly Substituted Indole/Pyrrole-Fused Diazepanones. J Org Chem 2021; 86:6458-6466. [PMID: 33909425 DOI: 10.1021/acs.joc.1c00303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A one-pot synthetic method for indole/pyrrole-fused 1,4-diazepanone scaffolds has been developed. This method involves a sequential amide coupling/intramolecular aza-Michael addition of 1H-indole/pyrrole-2-carboxylic acids with Morita-Baylis-Hillman-derived allylamines. The readily available starting materials, good stereoselectivity, and gram-scale synthesis make this method valuable for the construction of highly substituted fused heterocycles containing the 1,4-diazepanone moiety.
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Affiliation(s)
- Shutao Wang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Siyu Wang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Shaoli Song
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Qiansong Gao
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Chunxi Wen
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Zhuoqi Zhang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Lianyou Zheng
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
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15
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Su G, Thomson CJ, Yamazaki K, Rozsar D, Christensen KE, Hamlin TA, Dixon DJ. A bifunctional iminophosphorane squaramide catalyzed enantioselective synthesis of hydroquinazolines via intramolecular aza-Michael reaction to α,β-unsaturated esters. Chem Sci 2021; 12:6064-6072. [PMID: 33996002 PMCID: PMC8098679 DOI: 10.1039/d1sc00856k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
An efficient synthesis of enantioenriched hydroquinazoline cores via a novel bifunctional iminophosphorane squaramide catalyzed intramolecular aza-Michael reaction of urea-linked α,β-unsaturated esters is described. The methodology exhibits a high degree of functional group tolerance around the forming hydroquinazoline aryl core and wide structural variance on the nucleophilic N atom of the urea moiety. Excellent yields (up to 99%) and high enantioselectivities (up to 97 : 3 er) using both aromatic and less acidic aliphatic ureas were realized. The potential industrial applicability of the transformation was demonstrated in a 20 mmol scale-up experiment using an adjusted catalyst loading of 2 mol%. The origin of enantioselectivity and reactivity enhancement provided by the squaramide motif has been uncovered computationally using density functional theory (DFT) calculations, combined with the activation strain model (ASM) and energy decomposition analysis (EDA). The activation of both aromatic and aliphatic ureas as N-centered nucleophiles in intramolecular Michael addition reactions to α,β-unsaturated esters was achieved under bifunctional iminophosphorane squaramide superbase catalysis.![]()
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Affiliation(s)
- Guanglong Su
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Connor J Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK .,Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam De Boelelaan 1083, 1081 HV Amsterdam The Netherlands
| | - Daniel Rozsar
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Kirsten E Christensen
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam De Boelelaan 1083, 1081 HV Amsterdam The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
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16
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Sharma N, Kour M, Gupta R, Bansal RK. A new cross-conjugated mesomeric betaine. RSC Adv 2021; 11:25296-25304. [PMID: 35478922 PMCID: PMC9037020 DOI: 10.1039/d1ra03981d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/03/2021] [Indexed: 12/24/2022] Open
Abstract
Cross-conjugated mesomeric betaine (CCMB) has been defined as the dipolar species in which positive and negative charges are exclusively restricted to different parts of the molecule. In contrast to indolizine which undergoes [8+2] cycloaddition with dimethyl acetylenedicarboxylate (DMAD), its 1-aza analogue, namely imidazo[1,2-a]pyridine reacts with the same reagent to afford the first representative of the CCMB isoconjugate with the odd non-alternant hydrocarbon anion. The structure of the product could be assigned on the basis of the NMR and HRMS results. Furthermore, the spectral studies indicated the presence of additional DMAD molecules in CCMB, possibly in the form of a charge-transfer (CT) complex. The whole sequence of reactions initiated by the attack of imidazo[1,2-a]pyridine on DMAD could be rationalized on the basis of the computational study of a model reaction sequence at the DFT (B3LYP/6-31+G(d)) level indicating the formation of a new CCMB derivative. The electronic excited states of the product were investigated by time-dependent density functional theory (TDDFT) calculations at the wB97XD/6-311++G(d,p) level, which indicate low-lying charge transfer that is characteristic of the CCMBs. Cross-conjugated mesomeric betaine (CCMB) has been defined as the dipolar species in which positive and negative charges are exclusively restricted to different parts of the molecule. A new CCMB isoconjugate with odd non-alternant hydrocarbon anion is reported.![]()
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Affiliation(s)
| | | | - Raakhi Gupta
- The IIS (deemed to be University)
- Jaipur 302020
- India
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17
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Kim K, Park S, Lee Y. KO
t
‐Bu‐Catalyzed Chemo‐ and Regioselective Hydroamination of Allylic Sulfones with Indoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Kundo Kim
- Department of Chemistry Kwangwoon University Seoul 01897, Republic of Korea
| | - Subin Park
- Department of Chemistry Kwangwoon University Seoul 01897, Republic of Korea
| | - Yunmi Lee
- Department of Chemistry Kwangwoon University Seoul 01897, Republic of Korea
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18
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Guin S, Saha HK, Patel AK, Gudimella SK, Biswas S, Samanta S. 1,6-Aza-Michael addition of para-quinone methides with N-heterocycles catalyzed by Zn(OTf)2: A regioselective approach to N-diarylmethyl-substituted heterocycles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Alyabyev SB, Beletskaya IP. Gold as a catalyst. Part III. Addition to double bonds. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4901] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Rogier J, Anani L, Coelho A, Massicot F, Machado-Rodrigues C, Behr JB, Vasse JL. Homoallylic amines as efficient chiral inducing frameworks in the conjugate addition of amides to α,β-unsaturated esters. An entry to enantio-enriched diversely substituted amines. Org Biomol Chem 2020; 18:2632-2636. [PMID: 31998930 DOI: 10.1039/d0ob00034e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diastereoselective conjugate addition of secondary homoallylamines, obtained in the enantioenriched form via allylmetallation of imines, to α,β-unsaturated esters is reported. This method allows access to valuable building blocks as well as heterocyclic skeletons, providing tertiary amines bearing two chains integrating a stereogenic center adjacent to the nitrogen atom.
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Affiliation(s)
- Johann Rogier
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Lilia Anani
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Aurélien Coelho
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Fabien Massicot
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Carine Machado-Rodrigues
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Jean-Bernard Behr
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
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21
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Lin Y, Hirschi WJ, Kunadia A, Paul A, Ghiviriga I, Abboud KA, Karugu RW, Vetticatt MJ, Hirschi JS, Seidel D. A Selenourea-Thiourea Brønsted Acid Catalyst Facilitates Asymmetric Conjugate Additions of Amines to α,β-Unsaturated Esters. J Am Chem Soc 2020; 142:5627-5635. [PMID: 32118419 PMCID: PMC7533150 DOI: 10.1021/jacs.9b12457] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
β-Amino esters are obtained with high levels of enantioselectivity via the conjugate addition of cyclic amines to unactivated α,β-unsaturated esters. A related strategy enables the kinetic resolution of racemic cyclic 2-arylamines, using benzyl acrylate as the resolving agent. Reactions are facilitated by an unprecedented selenourea-thiourea organocatalyst. As elucidated by DFT calculations and 13C kinetic isotope effect studies, the rate-limiting and enantiodetermining step of the reaction is the protonation of a zwitterionic intermediate by the catalyst. This represents a rare case in which a thiourea compound functions as an asymmetric Brønsted acid catalyst.
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Affiliation(s)
- Yingfu Lin
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - William J Hirschi
- Department of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - Anuj Kunadia
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Anirudra Paul
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Ion Ghiviriga
- Center for NMR Spectroscopy, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Khalil A Abboud
- Center for X-ray Crystallography, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Rachael W Karugu
- Department of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - Mathew J Vetticatt
- Department of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - Jennifer S Hirschi
- Department of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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22
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Park S, Lee H, Lee Y. Copper‐Catalyzed Regio‐ and Stereoselective 1,6‐Conjugate Addition of Aza‐Heterocycles to 1‐Sulfonyl‐1,3‐dienes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901299] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Subin Park
- Department of Chemistry Kwangwoon University Seoul 01897 Republic of Korea
| | - Hanseul Lee
- Department of Chemistry Kwangwoon University Seoul 01897 Republic of Korea
| | - Yunmi Lee
- Department of Chemistry Kwangwoon University Seoul 01897 Republic of Korea
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23
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Shi Q, Greenwood NS, Meehan MC, Park H, Galella M, Sandhu B, Khandelwal P, Coombs JR, Gallagher WP, Guerrero CA, Hynes J, Dhar TGM, Gonzalez Bobes F, Marcoux D. One-Step Diastereoselective Pyrrolidine Synthesis Using a Sulfinamide Annulating Reagent. Org Lett 2019; 21:9198-9202. [PMID: 31647672 DOI: 10.1021/acs.orglett.9b03560] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This communication highlights the use of chiral sulfinamides as nitrogen nucleophiles in intermolecular aza-Michael reactions. When chiral sulfinamides are coupled to a chloroethyl group, the corresponding novel annulating reagents can be used to streamline the stereoselective synthesis of complex pyrrolidine-containing molecules. As a result, it has enabled a medicinal chemistry campaign for the synthesis of biologically active RORγt inverse agonists.
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Affiliation(s)
- Qing Shi
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Nathaniel S Greenwood
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Mariah C Meehan
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Hyunsoo Park
- Materials Science & Engineering , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Michael Galella
- Materials Science & Engineering , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Bhupinder Sandhu
- Materials Science & Engineering , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Purnima Khandelwal
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - John R Coombs
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - William P Gallagher
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Carlos A Guerrero
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - John Hynes
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - T G Murali Dhar
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Francisco Gonzalez Bobes
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - David Marcoux
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
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24
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Access to 1,2,3-triazole-fused isoindolines via an unexpected Lewis acid catalyzed cyclization reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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25
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Kitanosono T, Sakai M, Zhu L, Kobayashi S. Enantioselective Aza-Michael/Protonation Reactions in Water. CHEM LETT 2019. [DOI: 10.1246/cl.190317] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Taku Kitanosono
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masaru Sakai
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Lei Zhu
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shū Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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26
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Larionov VA, Savel'yeva TF, Medvedev MG, Stoletova NV, Smol'yakov AF, Gugkaeva ZT, Cruchter T, Maleev VI. The SelectiveN-Functionalization of Indoles viaaza-Michael Addition in the Ligand Sphere of a Chiral Nickel(II) Complex: Asymmetric Synthesis of (S)-1H-Indole-Alanine Derivatives. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900650] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Vladimir A. Larionov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
- Department of Inorganic Chemistry; Peoples' Friendship University of Russia (RUDN University); Miklukho-Maklaya Str. 6 117198 Moscow Russia
| | - Tat'yana F. Savel'yeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
| | - Michael G. Medvedev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
- N. D. Zelinsky Institute of Organic Chemistry of Russian Academy of Sciences; Leninsky Prospect 47 119991 Moscow Russia
- Department of Chemistry; Lomonosov Moscow State University; Leninskie Gory 1/3 119991 Moscow Russia
- National Research University Higher School of Economics (HSE); Myasnitskaya Str. 20 101000 Moscow Russia
| | - Nadezhda V. Stoletova
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
| | - Alexander F. Smol'yakov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
- Plekhanov Russian University of Economics; Stremyanny Per. 36 117997 Moscow Russia
| | - Zalina T. Gugkaeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
| | - Thomas Cruchter
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Victor I. Maleev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
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27
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Miao C, Jiang L, Ren L, Xue Q, Yan F, Shi W, Li X, Sheng J, Kai S. Iodine-catalyzed coupling of β-hydroxyketones with aromatic amines to form β-aminoketones and Benzo[h]quinolones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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28
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Gao W, Chen M, Ding Q, Peng Y. Catalytic Asymmetric Synthesis of Isoindolinones. Chem Asian J 2019; 14:1306-1322. [DOI: 10.1002/asia.201900080] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/11/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Wei Gao
- Key Laboratory of Functional Small Organic MoleculesMinistry of Education and College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang Jiangxi 330022 P. R. China
- Jiangxi Academy of Forestry Nanchang Jiangxi 330013 P. R. China
| | - Mu‐wang Chen
- Key Laboratory of Functional Small Organic MoleculesMinistry of Education and College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang Jiangxi 330022 P. R. China
| | - Qiuping Ding
- Key Laboratory of Functional Small Organic MoleculesMinistry of Education and College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang Jiangxi 330022 P. R. China
| | - Yiyuan Peng
- Key Laboratory of Functional Small Organic MoleculesMinistry of Education and College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang Jiangxi 330022 P. R. China
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29
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Michigami K, Murakami H, Nakamura T, Hayama N, Takemoto Y. Catalytic asymmetric aza-Michael addition of fumaric monoacids with multifunctional thiourea/boronic acids. Org Biomol Chem 2019; 17:2331-2335. [DOI: 10.1039/c9ob00045c] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chiral multifunctional thiourea/boronic acid catalysts enabled the synthesis of N-hydroxyaspartate derivatives applicable for KAHA amidation through acid-β selective aza-Michael addition.
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Affiliation(s)
- Kenichi Michigami
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Kyoto 606-8501
- Japan
| | - Hiroki Murakami
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Kyoto 606-8501
- Japan
| | - Takeru Nakamura
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Kyoto 606-8501
- Japan
| | - Noboru Hayama
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Kyoto 606-8501
- Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Kyoto 606-8501
- Japan
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30
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Vinogradov MG, Turova OV, Zlotin SG. Recent advances in the asymmetric synthesis of pharmacology-relevant nitrogen heterocycles via stereoselective aza-Michael reactions. Org Biomol Chem 2019; 17:3670-3708. [DOI: 10.1039/c8ob03034k] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this review, recent applications of a stereoselective aza-Michael reaction for asymmetric synthesis of naturally occurring N-containing heterocyclic scaffolds and their usefulness to pharmacology are summarized.
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Affiliation(s)
- Maxim G. Vinogradov
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Olga V. Turova
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
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31
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Torres J, Escolano M, Rabasa-Alcañiz F, Sanz-Vidal A, Sánchez-Roselló M, del Pozo C. Highly convergent total synthesis of (+)-anaferine and (−)-dihydrocuscohygrine. Org Chem Front 2019. [DOI: 10.1039/c9qo00811j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The total synthesis of (+)-anaferine and (−)-dihydrocuscohygrine is described. Bidirectional cross metathesis/double intramolecular aza-Michael reactions were the key steps.
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Affiliation(s)
- Javier Torres
- Departamento de Química Orgánica
- Universidad de Valencia
- 46100 Burjassot
- Spain
| | - Marcos Escolano
- Departamento de Química Orgánica
- Universidad de Valencia
- 46100 Burjassot
- Spain
| | | | - Alvaro Sanz-Vidal
- Departamento de Química Orgánica
- Universidad de Valencia
- 46100 Burjassot
- Spain
| | | | - Carlos del Pozo
- Departamento de Química Orgánica
- Universidad de Valencia
- 46100 Burjassot
- Spain
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32
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Kumar GS, Singh D, Kumar M, Kapur M. Palladium-Catalyzed Aerobic Oxidative Coupling of Allylic Alcohols with Anilines in the Synthesis of Nitrogen Heterocycles. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00287] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gangam Srikanth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Diksha Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
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33
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Sallio R, Lebrun S, Capet F, Agbossou-Niedercorn F, Michon C, Deniau E. Diastereoselective auxiliary- and catalyst-controlled intramolecular aza-Michael reaction for the elaboration of enantioenriched 3-substituted isoindolinones. Application to the synthesis of a new pazinaclone analogue. Beilstein J Org Chem 2018; 14:593-602. [PMID: 29623121 PMCID: PMC5852534 DOI: 10.3762/bjoc.14.46] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/21/2018] [Indexed: 02/03/2023] Open
Abstract
A new asymmetric organocatalyzed intramolecular aza-Michael reaction by means of both a chiral auxiliary and a catalyst for stereocontrol is reported for the synthesis of optically active isoindolinones. A selected cinchoninium salt was used as phase-transfer catalyst in combination with a chiral nucleophile, a Michael acceptor and a base to provide 3-substituted isoindolinones in good yields and diastereomeric excesses. This methodology was applied to the asymmetric synthesis of a new pazinaclone analogue which is of interest in the field of benzodiazepine-receptor agonists.
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Affiliation(s)
- Romain Sallio
- Univ, Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Stéphane Lebrun
- Univ, Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Frédéric Capet
- Univ, Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Francine Agbossou-Niedercorn
- Univ, Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Christophe Michon
- Univ, Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Eric Deniau
- Univ, Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
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34
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Uno BE, Deibler KK, Villa C, Raghuraman A, Scheidt KA. Conjugate Additions of Amines to Maleimides via Cooperative Catalysis. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Brice E. Uno
- Department of Chemistry; Center for Molecular Innovation and Drug Discovery; Chemistry of Life Processes Institute; Northwestern University; 2145 Sheridan Road Evanston, IL 60208 USA
| | - Kristine K. Deibler
- Department of Chemistry; Center for Molecular Innovation and Drug Discovery; Chemistry of Life Processes Institute; Northwestern University; 2145 Sheridan Road Evanston, IL 60208 USA
| | | | | | - Karl A. Scheidt
- Department of Chemistry; Center for Molecular Innovation and Drug Discovery; Chemistry of Life Processes Institute; Northwestern University; 2145 Sheridan Road Evanston, IL 60208 USA
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35
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Khan HPA, Chakraborty TK. Diversity-Oriented Approach to N-Heterocyclic Compounds from α-Phenyl-β-enamino Ester via a Mitsunobu-Michael Reaction Sequence. J Org Chem 2018; 83:2027-2039. [PMID: 29334224 DOI: 10.1021/acs.joc.7b02962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we delineate a novel route for the diastereoselective construction of diversely substituted N-heterocyclic ring systems as valuable scaffolds for natural products and pharmaceuticals, starting from an easily accessible prochiral α-phenyl-β-enamino ester. The reaction sequence relies on the unexplored reactivity of α-phenyl-β-enamino ester as a nucleophilic partner in the Mitsunobu reaction to forge the N-tethered alkene-alcohol/thiol/amine intermediate, which was subjected to an intramolecular hetero-Michael addition reaction under mild conditions to furnish the respective N-heterocyclic compounds embedded with an exocyclic chiral center in high yields and excellent diastereoselectivities. The methodology is amenable for a broad range of substrates based on a metal-free approach.
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Affiliation(s)
- Hina P A Khan
- Department of Organic Chemistry, Indian Institute of Science , Bengaluru 560012, India
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36
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Xing S, Cui H, Qin J, Gu N, Zhang B, Wang K, Wang Y, Xia L, Wang Y. Diastereoselective synthesis ofcis-1,3-disubstituted isoindolinesviaa highly site-selective tandem cyclization reaction. Org Chem Front 2018. [DOI: 10.1039/c8qo00316e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A highly site-selective tandem reaction involving regioselective ring opening of aziridines and Michael addition of electron-deficient alkenes has been described.
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Hong Cui
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Jiajing Qin
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Nan Gu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Bowei Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Ying Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Li Xia
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Yumeng Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
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37
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Kour M, Gupta R, Bansal RK. Experimental and Theoretical Investigation of the Reaction of Amines with Methyl Propiolate. ChemistrySelect 2017. [DOI: 10.1002/slct.201701103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Manjinder Kour
- Department of chemistry the IIS University; Jaipur 302020 India
| | - Raakhi Gupta
- Department of chemistry the IIS University; Jaipur 302020 India
| | - Raj K. Bansal
- Department of chemistry the IIS University; Jaipur 302020 India
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38
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The aza-Michael reaction as an alternative strategy to generate advanced silicon-based (macro)molecules and materials. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2017.02.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zhou Z, Li Y, Han B, Gong L, Meggers E. Enantioselective catalytic β-amination through proton-coupled electron transfer followed by stereocontrolled radical-radical coupling. Chem Sci 2017; 8:5757-5763. [PMID: 28989615 PMCID: PMC5621506 DOI: 10.1039/c7sc02031g] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/15/2017] [Indexed: 12/14/2022] Open
Abstract
A new mechanistic approach for the catalytic, enantioselective conjugate addition of nitrogen-based nucleophiles to acceptor-substituted alkenes is reported, which is based on a visible light induced and phosphate base promoted transfer of a single electron from a nitrogen nucleophile to a catalyst-bound acceptor-substituted alkene, followed by a stereocontrolled C-N bond formation through stereocontrolled radical-radical coupling. Specifically, N-aryl carbamates are added to the β-position of α,β-unsaturated 2-acyl imidazoles using a visible light activated photoredox mediator in combination with a chiral-at-rhodium Lewis acid catalyst and a weak phosphate base, affording new C-N bonds in a highly enantioselective fashion with enantioselectivities reaching up to 99% ee and >99 : 1 dr for a menthol-derived carbamate. As an application, the straightforward synthesis of a chiral β-amino acid ester derivative is demonstrated.
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Affiliation(s)
- Zijun Zhou
- College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China .
| | - Yanjun Li
- College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China .
| | - Bowen Han
- College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China .
| | - Lei Gong
- College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China .
| | - Eric Meggers
- College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China .
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany .
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40
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Asymmetric hydroazidation of α -substituted vinyl ketones catalyzed by chiral primary amine. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Bergamonti L, Graiff C, Tegoni M, Predieri G, Bellot-Gurlet L, Lottici PP. Raman and NMR kinetics study of the formation of amidoamines containing N-hydroxyethyl groups and investigations on their Cu(II) complexes in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:515-524. [PMID: 27592056 DOI: 10.1016/j.saa.2016.07.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/27/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
Three amidoamines containing the N-hydroxyethyl group (HOEt), namely (HOEt)2N(CH2)2C(O)NH2 (1), [(HOEt)2N(CH2)2C(O)NH]2CH2 (2) and HOEtN[(CH2)2C(O)NH2]2 (3) have been synthesized by reacting diethanolamine HOEt2NH with acrylamide and N,N'-methylenebisacrylamide (respectively 1 and 2) and ethanolamine HOEtNH2 with acrylamide (3). Four other compounds corresponding to 1 and 2, but derived from sec-amines Me2NH (4 and 5) and Et2NH (6 and 7) have been prepared for the sake of comparison of the spectroscopic features. All compounds have been obtained by the well-known aza-Michael addition between an N-nucleophile and an activated vinyl group. The reaction in water between diethanolamine and acrylamide leading to 1 has been monitored in situ by Raman and NMR spectroscopy, both techniques confirming second order kinetics and giving values for kinetic constants in excellent agreement. The coordination ability of 1 and 2 towards Cu2+ in water has been studied by the Job's plot method. Spectroscopic data indicate that ligand 1 prevalently forms a 4:1 Ligand/Metal complex with a (N,O3) coordination set on the equatorial plane of Cu2+, whereas ligand 2, containing two amide functionalities bridged by a methylene group, appears able to form a 1:1 Ligand/Metal chelate species, again with a (N,O3) donor set around copper.
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Affiliation(s)
- Laura Bergamonti
- Dipartimento di Chimica, University of Parma, Viale delle Scienze 17/A, 43124 Parma, Italy.
| | - Claudia Graiff
- Dipartimento di Chimica, University of Parma, Viale delle Scienze 17/A, 43124 Parma, Italy.
| | - Matteo Tegoni
- Dipartimento di Chimica, University of Parma, Viale delle Scienze 17/A, 43124 Parma, Italy
| | - Giovanni Predieri
- Dipartimento di Chimica, University of Parma, Viale delle Scienze 17/A, 43124 Parma, Italy
| | - Ludovic Bellot-Gurlet
- Sorbonne Universités, MONARIS, UMR 8233 UPMC-CNRS, Université Pierre et Marie Curie Paris 6, 75252 Paris, France
| | - Pier Paolo Lottici
- Dipartimento di Fisica e Scienze della Terra, University of Parma, Viale delle Scienze 7/A, 43124 Parma, Italy
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Kandepedu N, Abrunhosa-Thomas I, Troin Y. Stereoselective strategies for the construction of polysubstituted piperidinic compounds and their applications in natural products’ synthesis. Org Chem Front 2017. [DOI: 10.1039/c7qo00262a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An abridged and far-reaching review communication on the construction of the polysubstituted piperidinic core using diverse methodologies for the benefit of organic chemists interested in the total synthesis of biologically active compounds.
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Affiliation(s)
- Nishanth Kandepedu
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - Isabelle Abrunhosa-Thomas
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - Yves Troin
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
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Kour M, Gupta R, Bansal RK. Experimental and Theoretical Investigation of the Reaction of Secondary Amines with Maleic Anhydride. Aust J Chem 2017. [DOI: 10.1071/ch17206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The reaction of secondary amines, namely 1-methylpiperazine, pyrrolidine, morpholine, 2-methylpiperidine, and diethylamine, with maleic anhydride has been investigated experimentally and theoretically at the DFT level. Under kinetic control, i.e. at −78°C or −15°C, amines add across the C=O functionality exclusively and the initially formed addition products isomerize to the corresponding N-substituted maleimic acid derivatives. In contrast to the acyclic α,β-unsaturated carbonyl compounds, amine does not add across the C=C functionality in maleic anhydride even under thermodynamic control. This behaviour of maleic anhydride can be rationalized on the basis of the local condensed Fukui functions, which reveal that the carbonyl carbon atoms in maleic anhydride are much harder than in an acyclic α,β-unsaturated carbonyl compound, such as acrolein. This prompts the amines to attack the carbonyl group in maleic anhydride exclusively.
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Qian P, Deng Y, Mei H, Han J, Pan Y. Metal-free nitroxyl radical-mediated β-C(sp3)–H amination of saturated ketones with heteroaryl halides: multiple roles of TEMPO. Chem Commun (Camb) 2017; 53:2958-2961. [DOI: 10.1039/c7cc00145b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first metal-free nitroxyl-radical-mediated β-amination of saturated ketones by using heteroaryl halides as amide precursors has been developed.
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Affiliation(s)
- Ping Qian
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Yu Deng
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Yi Pan
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
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45
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Desmet GB, D'hooge DR, Omurtag PS, Espeel P, Marin GB, Du Prez FE, Reyniers MF. Quantitative First-Principles Kinetic Modeling of the Aza-Michael Addition to Acrylates in Polar Aprotic Solvents. J Org Chem 2016; 81:12291-12302. [PMID: 27978758 DOI: 10.1021/acs.joc.6b02218] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This work presents a detailed computational study and kinetic analysis of the aza-Michael addition of primary and secondary amines to acrylates in an aprotic solvent. Accurate rate coefficients for all elementary steps in the various competing mechanisms are calculated using an ONIOM-based approach in which the full system is calculated with M06-2X/6-311+G(d,p) and the core system with CBS-QB3 corrected for solvation using COSMO-RS. Diffusional contributions are taken into account using the coupled encounter pair model with diffusion coefficients calculated based on molecular dynamics simulations. The calculated thermodynamic and kinetic parameters for all forward and reverse elementary reactions are fed to a microkinetic model giving excellent agreement with experimental data obtained using GC analysis. Rate analysis reveals that for primary and secondary amines, the aza-Michael addition to ethyl acrylate occurs preferentially according to a 1,2-addition mechanism, consisting of the pseudoequilibrated formation of a zwitterion followed by a rate controlling amine assisted proton transfer toward the singly substituted product. The alternative 1,4-addition becomes competitive if substituents are present on the amine or double bond of the acrylate. Primary amines react faster than secondary amines due to increased solvation of the zwitterionic intermediate and less sterically hindered proton transfer.
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Affiliation(s)
- Gilles B Desmet
- Laboratory for Chemical Technology, Ghent University , Technologiepark 914, B-9052 Gent, Belgium
| | - Dagmar R D'hooge
- Laboratory for Chemical Technology, Ghent University , Technologiepark 914, B-9052 Gent, Belgium.,Department of Textiles, Ghent University , Technologiepark 907, B-9052 Gent, Belgium
| | - Pinar Sinem Omurtag
- Polymer Chemistry Research Group, Ghent University , Krijgslaan 281 S4-bis, B-9000 Gent, Belgium
| | - Pieter Espeel
- Polymer Chemistry Research Group, Ghent University , Krijgslaan 281 S4-bis, B-9000 Gent, Belgium
| | - Guy B Marin
- Laboratory for Chemical Technology, Ghent University , Technologiepark 914, B-9052 Gent, Belgium
| | - Filip E Du Prez
- Polymer Chemistry Research Group, Ghent University , Krijgslaan 281 S4-bis, B-9000 Gent, Belgium
| | - Marie-Françoise Reyniers
- Laboratory for Chemical Technology, Ghent University , Technologiepark 914, B-9052 Gent, Belgium
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46
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Ryan J, Šiaučiulis M, Gomm A, Maciá B, O'Reilly E, Caprio V. Transaminase Triggered Aza-Michael Approach for the Enantioselective Synthesis of Piperidine Scaffolds. J Am Chem Soc 2016; 138:15798-15800. [PMID: 27960354 DOI: 10.1021/jacs.6b07024] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The expanding "toolbox" of biocatalysts opens new opportunities to redesign synthetic strategies to target molecules by incorporating a key enzymatic step into the synthesis. Herein, we describe a general biocatalytic approach for the enantioselective preparation of 2,6-disubstituted piperidines starting from easily accessible pro-chiral ketoenones. The strategy represents a new biocatalytic disconnection, which relies on an ω-TA-mediated aza-Michael reaction. Significantly, we show that the reversible enzymatic process can power the shuttling of amine functionality across a molecular framework, providing access to the desired aza-Michael products.
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Affiliation(s)
- James Ryan
- Faculty of Science & Engineering, Division of Chemistry & Environmental Science, Manchester Metropolitan University , Chester Street, Manchester M1 5GD, United Kingdom
| | - Mindaugas Šiaučiulis
- School of Chemistry, University of Nottingham , University Park, Nottingham NG7 2RD, United Kingdom
| | - Andrew Gomm
- School of Chemistry, University of Nottingham , University Park, Nottingham NG7 2RD, United Kingdom
| | - Beatriz Maciá
- Faculty of Science & Engineering, Division of Chemistry & Environmental Science, Manchester Metropolitan University , Chester Street, Manchester M1 5GD, United Kingdom
| | - Elaine O'Reilly
- School of Chemistry, University of Nottingham , University Park, Nottingham NG7 2RD, United Kingdom
| | - Vittorio Caprio
- Faculty of Science & Engineering, Division of Chemistry & Environmental Science, Manchester Metropolitan University , Chester Street, Manchester M1 5GD, United Kingdom
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A short access to 3,5-disubstituted piperazinones based on the aza-Michael addition of α-amino esters to β-substituted nitroalkenes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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48
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Barcellos JC, Vilela GVDA, Borges BH, Miranda MF, Dias AG, Costa PR. The syn-selective conjugate addition of amines to enoates derived from d-mannitol. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.06.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Giardinetti M, Marrot J, Moreau X, Coeffard V, Greck C. Asymmetric Synthesis of Fused Polycyclic Indazoles through Aminocatalyzed Aza-Michael Addition/Intramolecular Cyclization. J Org Chem 2016; 81:6855-61. [DOI: 10.1021/acs.joc.6b01201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Maxime Giardinetti
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Jérôme Marrot
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Xavier Moreau
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Vincent Coeffard
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Christine Greck
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
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Szcześniak P, Ulikowski A, Staszewska-Krajewska O, Lipner G, Furman B. Stereoselective synthesis of benzoquinolizidines and related homologues via intramolecular addition to dihydropyridones. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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