1
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Shinde DR, Rama Krishna G, Marelli UK. Metal-Free One-Pot Domino Synthesis of Oxazolidinethione Derivatives of Quaternary Amino Acids from α-Amino Esters and Aldehydes Using CS 2. J Org Chem 2024; 89:7109-7114. [PMID: 38319673 DOI: 10.1021/acs.joc.3c02217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
We present a streamlined, metal-free, one-pot domino approach to efficiently synthesize oxazolidinethione derivatives containing substituted quaternary amino acids. This method employs α-amino esters, aldehydes, and CS2 under mild conditions, constructing three new bonds (C-N, C-C, and C-O) to produce oxazolidinethione compounds featuring a quaternary center and a beta-hydroxy derivative in high yields. This scalable protocol enables the creation of libraries of biologically significant, intricate amino acid derivatives using amino esters and aldehydes.
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Affiliation(s)
- Dinesh R Shinde
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Central NMR Facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad 201002, UP, India
| | - Gamidi Rama Krishna
- X-ray Crystallography, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
| | - Udaya Kiran Marelli
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Central NMR Facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad 201002, UP, India
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2
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Liu TF, Yao Y, Lu CD. Enantioselective Formal 1,2-Diamination of Ketenes with Iminosulfinamides: Asymmetric Synthesis of Unnatural α,α-Disubstituted α-Amino Acid Derivatives. Org Lett 2024. [PMID: 38602315 DOI: 10.1021/acs.orglett.4c00978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
A method was developed for the enantioselective formal 1,2-diamination of disubstituted ketenes using iminosulfinamides as nitrogen sources. The protocol involves the addition of lithium iminosulfinamides to ketenes to form N-iminosulfinyl amide metalloenolates. These metalloenolates then undergo a [2,3]-sigmatropic rearrangement to yield unnatural α,α-disubstituted α-amino acid derivatives with high enantiopurity. The chirality present at the sulfur atom in the iminosulfinamides is effectively transferred to α carbon of the resulting products, facilitating the highly enantioselective amination of ketenes.
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Affiliation(s)
- Teng-Fei Liu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, People's Republic of China
| | - Yun Yao
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, People's Republic of China
| | - Chong-Dao Lu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, People's Republic of China
- School of Health, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
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3
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Yurino T, Wu Z, Suzuki K, Nitta R, Sakaguchi Y, Ohkuma T. Asymmetric Cyanation of α-Ketimino Ester Derivatives with Chiral Ru-Li Combined Catalysts. Org Lett 2024; 26:900-905. [PMID: 38251826 DOI: 10.1021/acs.orglett.3c04175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Asymmetric cyanation of α-ketimino esters catalyzed by combined systems of amino acid/BINAP derivative/Ru(II) complexes and lithium compounds was examined. The use of an appropriate combination of amino acid and BINAP ligands achieved high enantioselectivity for a variety of α-alkynyl (Val/XylBINAP/Ru), α-alkenyl (Val/TolBINAP/Ru), and α-aryl imino esters (Val/XylBINAP/Ru) as well as an isatin-derived cyclic imino amide (t-Leu/BINAP/Ru) to afford the α-cyano-α-amino esters and the amide with an α-nitrogen-substituted quaternary chiral center with up to 98% ee.
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Affiliation(s)
- Taiga Yurino
- Division of Applied Chemistry and Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Zhen Wu
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Kazuaki Suzuki
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Rino Nitta
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Yusuke Sakaguchi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Takeshi Ohkuma
- Division of Applied Chemistry and Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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4
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Park S, Myeong IS, Ham WH. Recent advances in the total synthesis of polyhydroxylated alkaloids via chiral oxazines. Org Biomol Chem 2024; 22:894-926. [PMID: 38230703 DOI: 10.1039/d3ob01624b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
This review summarizes recently established methodologies developed for the enantioselective and diastereoselective synthesis of chiral 1,3-oxazines. These compounds are of interest as advanced synthetic intermediates in the total synthesis of structurally complex and biologically active polyhydroxylated alkaloids such as (+)-1-deoxynojirimycin, (-)-anisomycin, (+)-castanospermine, (+)-casuarine, (-)-conduramine F-1, (-)-sphingofungin B, Neu5Ac methyl ester, and other natural products. The devised synthetic approach aims to offer a direct, efficient, and adaptable method for obtaining both pure enantiomers and pure diastereomers. It revolves around utilizing chiral building blocks like syn,syn-, syn,syn,anti-, syn,anti-, syn,anti,syn-, anti,syn-, anti,syn,syn-, and anti,syn,anti-oxazines. By integrating oxazine chemistry with established and innovative transformations, this approach enabled the synthesis of 30 polyhydroxylated amines across various studies conducted between 2007 and 2022.
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Affiliation(s)
- Seokhwi Park
- YS Life Science Co., Ltd, 207, Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, 18581, Republic of Korea.
| | - In-Soo Myeong
- College of Pharmacy, Daegu Catholic University, 13-13, Hayang-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do, 38430, Republic of Korea.
| | - Won-Hun Ham
- YS Life Science Co., Ltd, 207, Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, 18581, Republic of Korea.
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
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5
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Arsenov MA, Stoletova NV, Smol'yakov AF, Savel'yeva TF, Maleev VI, Loginov DA, Larionov VA. A synthetic route to artificial chiral α-amino acids featuring a 3,4-dihydroisoquinolone core through a Rh(III)-catalyzed functionalization of allyl groups in chiral Ni(II) complexes. Org Biomol Chem 2023; 21:9143-9149. [PMID: 37982196 DOI: 10.1039/d3ob01513k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
Currently, non-proteinogenic α-amino acids (α-AAs) have attracted increasing interest in bio- and medicinal chemistry. In this context, the first protocol for the asymmetric synthesis of artificial α-AAs featuring a 3,4-dihydroisoquinolone core with two stereogenic centers was successfully elaborated. A straightforward Rh(III)-catalysed C-H activation/annulation reaction of various aryl hydroxamates with a set of robust and readily available chiral Ni(II) complexes, which have allylic appendages derived from glycine (Gly), alanine (Ala) and phenylalanine (Phe), allowed incorporation of a 3,4-dihydroisoquinolone scaffold into the chiral amino acid residue. The reaction was performed in methanol and under mild conditions (at room temperature under air atmosphere), providing separable diastereomeric complexes with up to 94% total yield. The target α-AA with a 3,4-dihydroisoquinolone core in an enantiopure form was subsequently released from the obtained chiral Ni(II) complexes via an acidic decomposition in aqueous HCl, along with the recovery of the chiral auxiliary ligand.
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Affiliation(s)
- Mikhail A Arsenov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
| | - Nadezhda V Stoletova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
| | - Alexander F Smol'yakov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
- Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russian Federation
| | - Tat'yana F Savel'yeva
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
| | - Victor I Maleev
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
| | - Dmitry A Loginov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
- Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russian Federation
| | - Vladimir A Larionov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, bld. 1, 119334 Moscow, Russian Federation.
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya Str. 6, 117198 Moscow, Russian Federation
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6
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Harmange Magnani C, Hernández-Meléndez JR, Tantillo DJ, Maimone TJ. Total Synthesis of Altemicidin: A Surprise Ending for a Monoterpene Alkaloid. JACS AU 2023; 3:2883-2893. [PMID: 37885570 PMCID: PMC10598567 DOI: 10.1021/jacsau.3c00417] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/21/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023]
Abstract
Monoterpene alkaloids encompass distinct chemical diversity and wide-ranging bioactivity. Their compact complexity has made them popular as synthetic targets and has inspired many distinct strategies and tactics in the field of heterocyclic chemistry. This article documents the evolution of a synthetic program aimed at accessing the unusual sulfonamide-containing natural product altemicidin, which was generally believed to be a monoterpene alkaloid throughout our entire synthetic investigations but has recently been found to originate through an unexpected and quite disparate biosynthetic pathway. By leveraging a pyridine dearomatization/cycloaddition strategy, we developed a concise pathway to the 5,6-fused bicyclic azaindane core and, after significant experimentation, an ultimate synthesis of altemicidin itself. Tactics to productively manipulate the multiple functional groups present on this highly polar scaffold proved challenging but were eventually realized via several carefully orchestrated and chemoselective transformations-investments that paid dividends in the form of significantly shorter chemical synthesis. Surprisingly, the bond-forming logic between our presumed abiotic synthetic strategy to this alkaloid class and its subsequently identified biosynthetic pathway is eerily similar.
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Affiliation(s)
- Claire
S. Harmange Magnani
- Department
of Chemistry, University of California,
Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - José R. Hernández-Meléndez
- Department
of Chemistry, University of California,
Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Dean J. Tantillo
- Department
of Chemistry, University of California−Davis; 1 Shields Avenue, Davis, California 95616, United States
| | - Thomas J. Maimone
- Department
of Chemistry, University of California,
Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
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7
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McGrory R, Clarke R, Marshall O, Sutherland A. Fluorescent α-amino acids via Heck-Matsuda reactions of phenylalanine-derived arenediazonium salts. Org Biomol Chem 2023; 21:6932-6939. [PMID: 37580965 DOI: 10.1039/d3ob01096a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
The Heck-Matsuda coupling reaction of arenediazonium salts derived from L-phenylalanine with various alkenes has been developed. A two-step process involving the preparation of a tetrafluoroborate diazonium salt from a 4-aminophenylalanine derivative, followed by a palladium(0)-catalysed Heck-Matsuda coupling reaction allowed access to a range of unnatural α-amino acids with cinnamate, vinylsulfone and stilbene side-chains. Analysis of the photophysical properties of these unnatural α-amino acids demonstrated that the (E)-stilbene analogues exhibited fluorescent properties with red-shifted absorption and emission spectra and larger quantum yields than L-phenylalanine.
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Affiliation(s)
- Rochelle McGrory
- School of Chemistry, University of Glasgow, The Joseph Black Building, Glasgow, G12 8QQ, UK.
| | - Rebecca Clarke
- School of Chemistry, University of Glasgow, The Joseph Black Building, Glasgow, G12 8QQ, UK.
| | - Olivia Marshall
- School of Chemistry, University of Glasgow, The Joseph Black Building, Glasgow, G12 8QQ, UK.
| | - Andrew Sutherland
- School of Chemistry, University of Glasgow, The Joseph Black Building, Glasgow, G12 8QQ, UK.
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8
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Li Q, Liu Y, Li C. Picolinaldehyde-Zinc(II)-Palladium(0) Catalytic System for the Asymmetric α-Allylation of N-Unprotected Amino Esters. Chemistry 2023; 29:e202301348. [PMID: 37237423 DOI: 10.1002/chem.202301348] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/26/2023] [Accepted: 05/26/2023] [Indexed: 05/28/2023]
Abstract
Reported in this work is a synergistic ternary achiral picolinaldehyde-Zn(II)-chiral palladium complex system for the highly enantioselective α-allylation of N-unprotected amino esters. By utilizing a variety of allylic carbonates or vinyl benzoxazinanones as substrates, α-allyl α-amino esters were obtained in high yields (up to 96 %) with high enantioselectivities (up to 98 % ee). Control experiments suggest that the coordination of Zn(II) with the Schiff base intermediate enhances the acidity of the α-C-H bonds of amino esters, thereby favoring α-allylation over intrinsic N-allylation. Furthermore, NMR studies reveal an interaction between the chiral palladium complex and the Zn(II)-Schiff base intermediate, leading to the formation of a picolinaldehyde-Zn(II)-Pd(0) catalytic system.
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Affiliation(s)
- Qian Li
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yan Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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9
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Laviós A, Martínez-Pardo P, Sanz-Marco A, Vila C, Pedro JR, Blay G. Synthesis of α,α-Diaryl-α-amino Acid Precursors by Reaction of Isocyanoacetate Esters with o-Quinone Diimides. Org Lett 2023; 25:5608-5612. [PMID: 37486803 PMCID: PMC10853967 DOI: 10.1021/acs.orglett.3c01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Indexed: 07/26/2023]
Abstract
A novel procedure for the synthesis of α,α-diaryl-α-amino acid derivatives has been developed. Silver oxide catalyzes the conjugate addition of α-aryl isocyanoacetates to o-quinone diimide, affording the corresponding α,α-diarylisocyano esters in excellent yields and regioselectivities in short reaction times. Acid hydrolysis of the isocyano group provides the corresponding amino acids bearing a diarylated tetrasubstituted carbon atom. The reaction is also amenable to the synthesis of α-alkyl-α-arylisocyano esters, while the reaction with 3-hydroxy o-quinone diimides provides 4H-benzo[e][1,3]oxazines via a conjugate addition/cyclization process.
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Affiliation(s)
- Adrián Laviós
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot E-46100, Spain
| | - Pablo Martínez-Pardo
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot E-46100, Spain
| | - Amparo Sanz-Marco
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot E-46100, Spain
| | - Carlos Vila
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot E-46100, Spain
| | - José R. Pedro
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot E-46100, Spain
| | - Gonzalo Blay
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot E-46100, Spain
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10
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Xie C, Wu S, Zhang R. Stereo- and Regiospecific S N2' Reaction of MBH Adducts with Isocyanoacetates: en Route to Transition-Metal-Free α-Allylation of Isocyanoacetates. ACS OMEGA 2023; 8:6854-6859. [PMID: 36844594 PMCID: PMC9948183 DOI: 10.1021/acsomega.2c07581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Herein, we report that under mild and transition-metal-free conditions an unprecedented and practical SN2' reaction of Morita-Baylis-Hillman adducts with isocyanoacetates takes place in a stereo- and regiospecific manner. This reaction which tolerates a wide variety of functionalities delivers transformable α-allylated isocyanoacetates in high efficiencies. Preliminary studies on the asymmetric version of this reaction indicate that ZnEt2/chiral amino alcohol combinations are an asymmetric catalytic system for this transformation, giving an enantioenriched α-allylated isocyanoacetate with a chiral quaternary carbon in a high yield.
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Affiliation(s)
- Chunsong Xie
- College
of New Materials and Engineering, Key Laboratory for Preparation and
Application of Energy Saving and Emission Reduction New Materials
of Jiaxing City, Jiaxing Nanhu University, Jiaxing 314001, P. R. China
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Song Wu
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Runmei Zhang
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
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11
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Ji P, Chen J, Meng X, Gao F, Dong Y, Xu H, Wang W. Design of Photoredox-Catalyzed Giese-Type Reaction for the Synthesis of Chiral Quaternary α-Aryl Amino Acid Derivatives via Clayden Rearrangement. J Org Chem 2022; 87:14706-14714. [PMID: 36264622 DOI: 10.1021/acs.joc.2c02029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Chiral quaternary α-aryl amino acids are biologically valued but synthetically challenging building blocks. Herein, we report a strategy for the synthesis of molecular architectures by unifying a photoredox catalytic asymmetric Giese-type reaction and Clayden rearrangement. A new class of chiral Karady-Beckwith dehydroalanines is designed and serves as a versatile handle for the photoredox-mediated highly stereoselective Giese-type reaction with feedstock carboxylic acids and tertiary amines. Subsequent Clayden rearrangement delivers chiral quaternary α-aryl amino acid derivatives with high stereoselectivity. The versatile approach offers a reliable source for the assembly of highly demanding chiral building blocks.
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Affiliation(s)
- Peng Ji
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Jing Chen
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Xiang Meng
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Feng Gao
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Yue Dong
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Hang Xu
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Wei Wang
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721-0207, United States
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12
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Ahmad T, Khan S, Ullah N. Recent Advances in the Catalytic Asymmetric Friedel-Crafts Reactions of Indoles. ACS OMEGA 2022; 7:35446-35485. [PMID: 36249392 PMCID: PMC9558610 DOI: 10.1021/acsomega.2c05022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Functionalized chiral indole derivatives are privileged and versatile organic frameworks encountered in numerous pharmaceutically active agents and biologically active natural products. The catalytic asymmetric Friedel-Crafts reaction of indoles, catalyzed by chiral metal complexes or chiral organocatalysts, is one of the most powerful and atom-economical approaches to access optically active indole derivatives. Consequently, a wide range of electrophilic partners including α,β-unsaturated ketones, esters, amides, imines, β,γ-unsaturated α-keto- and α-ketiminoesters, ketimines, nitroalkenes, and many others have been successfully employed to achieve a plethora of functionalized chiral indole moieties. In particular, strategies for C-H functionalization in the phenyl of indoles require incorporation of a directing or blocking group in the phenyl or azole ring of indole. The discovery of chiral catalysts which can control enantiodiscrimination has gained a great deal of attention in recent years. This review will provide an updated account on the application of the asymmetric Friedel-Crafts reaction of indoles in the synthesis of diverse chiral indole derivatives, covering the timeframe from 2011 to today.
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Affiliation(s)
- Tauqir Ahmad
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Sardaraz Khan
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Nisar Ullah
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
- The
Center for Refining & Advanced Chemicals, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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13
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De Jesús Cruz P, Johnson JS. Crystallization-Enabled Henry Reactions: Stereoconvergent Construction of Fully Substituted [ N]-Asymmetric Centers. J Am Chem Soc 2022; 144:15803-15811. [PMID: 35980759 PMCID: PMC9469918 DOI: 10.1021/jacs.2c06669] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tetrasubstituted stereogenic carbon centers bearing a nitrogen substituent represent important motifs in medicinal chemistry and natural products; therefore, the development of efficient methods for the stereoselective synthesis of this class of compounds continues to be an important problem. This article describes stereoconvergent Henry reactions of γ,γ-disubstituted nitroalkanes to deliver highly functionalized building blocks containing up to five contiguous stereogenic centers including a fully substituted [N]-asymmetric center. Henry reactions of higher order nitroalkanes are often characterized by their reversibility and minimal accompanying thermodynamic stereocontrol. In contrast, mechanistic studies for the present case suggest a scenario in which reversibility is productively leveraged through crystallization-based stereocontrol, thereby enabling the efficient sequential π-additions of readily accessible starting materials to assemble complex acyclic stereoarrays.
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Affiliation(s)
- Pedro De Jesús Cruz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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14
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Babawale F, Murugesan K, Narobe R, König B. Synthesis of Unnatural α-Amino Acid Derivatives via Photoredox Activation of Inert C(sp 3)-H Bonds. Org Lett 2022; 24:4793-4797. [PMID: 35749614 DOI: 10.1021/acs.orglett.2c01822] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of unnatural, tertiary amino acids is a challenging task. While decarboxylation-radical addition has been an important strategy for their formation, the use of alkyl radicals from C(sp3)-H bonds has not been fully explored. Herein, we report a photocatalytic protocol for the synthesis of unnatural α-amino esters employing abundant alkanes and imines retaining full atom economy. When this method is applied, several amino acid derivatives are synthesized in moderate to good yields.
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Affiliation(s)
- Florence Babawale
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Kathiravan Murugesan
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Rok Narobe
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
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15
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Catalyst-free nitration of the aliphatic C-H bonds of tertiary β-keto esters with tert-butyl nitrite: access to α-quaternary α-amino acid precursors. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Adamek J, Grymel M, Kuźnik A, Październiok-Holewa A. 1-Aminoalkylphosphonium Derivatives: Smart Synthetic Equivalents of N-Acyliminium-Type Cations, and Maybe Something More: A Review. Molecules 2022; 27:1562. [PMID: 35268663 PMCID: PMC8911961 DOI: 10.3390/molecules27051562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/15/2022] [Accepted: 02/24/2022] [Indexed: 11/25/2022] Open
Abstract
N-acyliminium-type cations are examples of highly reactive intermediates that are willingly used in organic synthesis in intra- or intermolecular α-amidoalkylation reactions. They are usually generated in situ from their corresponding precursors in the presence of acidic catalysts (Brønsted or Lewis acids). In this context, 1-aminoalkyltriarylphosphonium derivatives deserve particular attention. The positively charged phosphonium moiety located in the immediate vicinity of the N-acyl group significantly facilitates Cα-P+ bond breaking, even without the use of catalyst. Moreover, minor structural modifications of 1-aminoalkyltriarylphosphonium derivatives make it possible to modulate their reactivity in a simple way. Therefore, these types of compounds can be considered as smart synthetic equivalents of N-acyliminium-type cations. This review intends to familiarize a wide audience with the unique properties of 1-aminoalkyltriarylphosphonium derivatives and encourage their wider use in organic synthesis. Hence, the most important methods for the preparation of 1-aminoalkyltriarylphosphonium salts, as well as the area of their potential synthetic utilization, are demonstrated. In particular, the structure-reactivity correlations for the phosphonium salts are discussed. It was shown that 1-aminoalkyltriarylphosphonium salts are not only an interesting alternative to other α-amidoalkylating agents but also can be used in such important transformations as the Wittig reaction or heterocyclizations. Finally, the prospects and limitations of their further applications in synthesis and medicinal chemistry were considered.
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Affiliation(s)
- Jakub Adamek
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (M.G.); (A.K.); (A.P.-H.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Mirosława Grymel
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (M.G.); (A.K.); (A.P.-H.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
- Department of Chemical Organic Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland
| | - Anna Kuźnik
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (M.G.); (A.K.); (A.P.-H.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Agnieszka Październiok-Holewa
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (M.G.); (A.K.); (A.P.-H.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
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17
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Zhang D, Wen J, Zhang X. Construction of a quaternary stereogenic center by asymmetric hydroformylation: a straightforward method to prepare chiral α-quaternary amino acids. Chem Sci 2022; 13:7215-7223. [PMID: 35799829 PMCID: PMC9214857 DOI: 10.1039/d2sc02139k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/26/2022] [Indexed: 01/01/2023] Open
Abstract
The construction of chiral quaternary carbon stereocenters has been a long-standing challenge in organic chemistry. Particularly, α-quaternary amino acids that are of high importance in biochemistry still lack a straightforward synthetic method. We here reported a hydroformylation approach to access chiral quaternary stereogenic centers, which has been a long-standing challenge in transition metal catalysis. α,β-Unsaturated carboxylic acid derivatives undergo hydroformylation with a rhodium catalyst to generate an α-quaternary stereocenter under mild conditions. By using this method, a variety of chiral α-quaternary amino acids could be synthesized with satisfactory enantioselectivity. In-depth investigation revealed that the regioselectivity is dramatically influenced by the electronic properties of the substituents attached to the target C
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C bond. By applying NMR and DFT analyses, the chiral environment of a rhodium/Yanphos complex was depicted, based on which a substrate-catalyst interaction model was proposed. A rhodium-catalyzed asymmetric hydroformylation reaction was reported to construct chiral α-quaternary amino acid derivatives. High chemo-, regio- and enantioselectivity were realized in one step.![]()
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Affiliation(s)
- Dequan Zhang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jialin Wen
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xumu Zhang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
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18
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Li M, Chen Y, Yan Y, Liu M, Huang M, Li W, Cao L, Zhang X. Organocatalytic asymmetric synthesis of quaternary α-isoxazole–α-alkynyl amino acid derivatives. Org Biomol Chem 2022; 20:8849-8854. [DOI: 10.1039/d2ob01746f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Chiral phosphoric acid catalyzed enantioselective addition of 5-amino-isoxazoles with β,γ-alkynyl-α-ketimino esters provided good yields and excellent enantioselectivities.
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Affiliation(s)
- Min Li
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yihua Chen
- Department of Chemistry, Xihua University, China
| | - Yingkun Yan
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Min Liu
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Min Huang
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Wenzhe Li
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lianyi Cao
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaomei Zhang
- Department of Chemistry, Xihua University, China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
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19
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Li Y, Gao N, Cao G, Teng D. The Co( ii)/spiroBox-catalyzed enantioselective Mukaiyama-Mannich reaction for the synthesis of quaternary α-amino acid derivatives. NEW J CHEM 2022. [DOI: 10.1039/d2nj00623e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co(ii)/spiroBox-catalyzed Mukaiyama-Mannich reactions of enol silyl ethers with cyclic N-sulfonyl ketimino esters were examined and showed excellent yields and enantioselectivity values.
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Affiliation(s)
- Yanshun Li
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Nanxing Gao
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Guorui Cao
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Dawei Teng
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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20
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Wang X, Liu Y, Wei J, Chen L, Li Y. Asymmetric Synthesis of α‐Amino Acids Bearing a 3‐Alkyloxindole Structural Motif. ChemistrySelect 2021. [DOI: 10.1002/slct.202102857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao‐Ping Wang
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Yong‐Liang Liu
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Jie Wei
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Ling‐Yan Chen
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Ya Li
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
- Shanghai Frontiers Science Research Center for Druggability of Cardiovascular noncoding RNA Institute for Frontier Medical Technology Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
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21
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Hu Y, Yan Z, Shi W, Liao J, Liu M, Pan T, Wang W, Wu Y, Hao X, Guo H. Copper/Lewis base cooperatively catalyzed asymmetric allylic alkylation of Morita-Baylis-Hillman carbonates with azomethine ylides. Chem Commun (Camb) 2021; 57:8059-8062. [PMID: 34296236 DOI: 10.1039/d1cc02861h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, an asymmetric allylic alkylation of easily available azomethine ylides with Morita-Baylis-Hillman (MBH) carbonates through a copper (i)/Lewis base cooperative catalysis strategy has been realized. The co-catalyzed asymmetric allylic alkylation provided the corresponding amino acid derivatives in up to 90% yields with up to 99% ee as well as good to excellent regioselectivity.
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Affiliation(s)
- Yimin Hu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Zhengyang Yan
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Wangyu Shi
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Jianning Liao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Min Liu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Ting Pan
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Xianghong Hao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
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22
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Lu B, Liang X, Zhang J, Wang Z, Peng Q, Wang X. Dirhodium(II)/Xantphos-Catalyzed Relay Carbene Insertion and Allylic Alkylation Process: Reaction Development and Mechanistic Insights. J Am Chem Soc 2021; 143:11799-11810. [PMID: 34296866 DOI: 10.1021/jacs.1c05701] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although dirhodium-catalyzed multicomponent reactions of diazo compounds, nucleophiles and electrophiles have achieved great advance in organic synthesis, the introduction of allylic moiety as the third component via allylic metal intermediate remains a formidable challenge in this area. Herein, an attractive three-component reaction of readily accessible amines, diazo compounds, and allylic compounds enabled by a novel dirhodium(II)/Xantphos catalysis is disclosed, affording various architecturally complex and functionally diverse α-quaternary α-amino acid derivatives in good yields with high atom and step economy. Mechanistic studies indicate that the transformation is achieved through a relay dirhodium(II)-catalyzed carbene insertion and allylic alkylation process, in which the catalytic properties of dirhodium are effectively modified by the coordination with Xantphos, leading to good activity in the catalytic allylic alkylation process.
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Affiliation(s)
- Bin Lu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xinyi Liang
- State Key Laboratory of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Jinyu Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zijian Wang
- State Key Laboratory of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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23
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Meng B, Shi Q, Meng Y, Chen J, Cao W, Wu X. Asymmetric catalytic alkynylation of thiazolones and azlactones for synthesis of quaternary α-amino acid precursors. Org Biomol Chem 2021; 19:5087-5092. [PMID: 34037046 DOI: 10.1039/d1ob00582k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Asymmetric alkynylation of thiazolones and azlactones with alkynylbenziodoxolones as the electrophilic alkyne source catalyzed by thiourea phosphonium salt is described. By using thiazolones as nucleophiles, the desired alkyne functionalized thiazolones were obtained in 55-89% yields with 31-86% ee. Azlactones gave the desired products in comparable yields with lower enantioselectivities. Ring-opening of the alkynylation products led to α,α-disubstituted α-amino acid derivatives efficiently without loss of enantioselectivity.
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Affiliation(s)
- Beibei Meng
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People's Republic of China.
| | - Qian Shi
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People's Republic of China.
| | - Yuan Meng
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People's Republic of China.
| | - Jie Chen
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People's Republic of China.
| | - Weiguo Cao
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People's Republic of China.
| | - Xiaoyu Wu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People's Republic of China.
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24
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Zhu DY, Zhang XJ, Yan M. Enantioselective Addition of Azlactones to Ethylene Sulfonyl Fluoride via Dual Catalysis. Org Lett 2021; 23:4228-4232. [PMID: 34029100 DOI: 10.1021/acs.orglett.1c01193] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Enantioselective conjugate addition of azlactones to ethylene sulfonyl fluoride has been achieved via the cooperative catalysis with (DHQD)2PHAL and a hydrogen-bond donor (HBD). This approach furnishes a facile access to a range of structurally diverse azlactone sulfonyl fluoride derivatives with good to excellent yields and enantioselectivities. The combination of azlactone and sulfonyl fluoride group produces valuable unnatural α-quaternary amino acid derivatives for the drug discovery.
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Affiliation(s)
- Dong-Yu Zhu
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xue-Jing Zhang
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ming Yan
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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25
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Harmange Magnani CS, Maimone TJ. Dearomative Synthetic Entry into the Altemicidin Alkaloids. J Am Chem Soc 2021; 143:7935-7939. [PMID: 34018391 DOI: 10.1021/jacs.1c04147] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Altemicidin and related Streptomyces-derived monoterpene alkaloids possess dense, highly polar azaindane cores as well as potent cytotoxic and tRNA synthetase inhibitory properties. The congested α-amino acid motif decorating their presumed iridoid-like core structure has proven to be both a synthetic challenge and a biosynthetic mystery to date. Herein, we report a distinct, abiotic strategy to these alkaloids resulting in a concise synthesis of altemicidin from simple chemical feedstocks. Key chemical findings include the exploitation of a dearomative pyridinium addition and dipolar cycloaddition sequence to stereospecifically install the quaternary amine moiety, and a chemoselective molybdenum-mediated double reduction to establish the fully functionalized azaindane nucleus with minimal redox manipulations.
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Affiliation(s)
- Claire S Harmange Magnani
- Department of Chemistry, University of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Thomas J Maimone
- Department of Chemistry, University of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
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26
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García-Urricelqui A, de Cózar A, Mielgo A, Palomo C. Probing α-Amino Aldehydes as Weakly Acidic Pronucleophiles: Direct Access to Quaternary α-Amino Aldehydes by an Enantioselective Michael Addition Catalyzed by Brønsted Bases. Chemistry 2021; 27:2483-2492. [PMID: 33034390 DOI: 10.1002/chem.202004468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Indexed: 12/20/2022]
Abstract
The high tendency of α-amino aldehydes to undergo 1,2-additions and their relatively low stability under basic conditions have largely prevented their use as pronucleophiles in the realm of asymmetric catalysis, particularly for the production of quaternary α-amino aldehydes. Herein, it is demonstrated that the chemistry of α-amino aldehydes may be expanded beyond these limits by documenting the first direct α-alkylation of α-branched α-amino aldehydes with nitroolefins. The reaction produces densely functionalized products bearing up to two, quaternary and tertiary, vicinal stereocenters with high diastereo- and enantioselectivity. DFT modeling leads to the proposal that intramolecular hydrogen bonding between the NH group and the carbonyl oxygen atom in the starting α-amino aldehyde is key for reaction stereocontrol.
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Affiliation(s)
- Ane García-Urricelqui
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
| | - Abel de Cózar
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
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27
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Li K, Lu Y. Phosphine-catalyzed γ-addition of nitroacetates to allenoates for enantioselective creation of α,α-disubstituted α-amino acid precursors. Org Chem Front 2021. [DOI: 10.1039/d1qo01016f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Enantioselective γ-addition of readily available α-substituted nitroacetates to allenoates has been achieved.
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Affiliation(s)
- Kaizhi Li
- Biophamaceutical Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian, 350207, China
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28
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Affiliation(s)
- Liang Wei
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 China
| | - Chun‐Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 China
- State Key Laboratory of Elemento‐organic Chemistry, Nankai University Tianjin 300071 China
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29
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Yuan Z, Liu X, Liu C, Zhang Y, Rao Y. Recent Advances in Rapid Synthesis of Non-proteinogenic Amino Acids from Proteinogenic Amino Acids Derivatives via Direct Photo-Mediated C-H Functionalization. Molecules 2020; 25:E5270. [PMID: 33198166 PMCID: PMC7696505 DOI: 10.3390/molecules25225270] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/07/2020] [Accepted: 11/09/2020] [Indexed: 11/16/2022] Open
Abstract
Non-proteinogenic amino acids have attracted tremendous interest for their essential applications in the realm of biology and chemistry. Recently, rising C-H functionalization has been considered an alternative powerful method for the direct synthesis of non-proteinogenic amino acids. Meanwhile, photochemistry has become popular for its predominant advantages of mild conditions and conservation of energy. Therefore, C-H functionalization and photochemistry have been merged to synthesize diverse non-proteinogenic amino acids in a mild and environmentally friendly way. In this review, the recent developments in the photo-mediated C-H functionalization of proteinogenic amino acids derivatives for the rapid synthesis of versatile non-proteinogenic amino acids are presented. Moreover, postulated mechanisms are also described wherever needed.
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Affiliation(s)
- Zhenbo Yuan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (Z.Y.); (X.L.); (C.L.)
| | - Xuanzhong Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (Z.Y.); (X.L.); (C.L.)
| | - Changmei Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (Z.Y.); (X.L.); (C.L.)
| | - Yan Zhang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China;
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (Z.Y.); (X.L.); (C.L.)
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30
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Panday SK. Pyroglutamic Acid and its Derivatives: The Privileged Precursors for the Asymmetric Synthesis of Bioactive Natural Products. MINI-REV ORG CHEM 2020. [DOI: 10.2174/1570193x16666190917142814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pyroglutamic acid is one of the privileged asymmetric precursors for the synthesis of a variety
of molecules such as Angiotensin-Converting Enzyme (ACE) inhibitors, angiotensin II receptor
subtypes (AT-1 receptor antagonists), as well as bioactive natural products. Starting with primary reports
in 1980’s, last almost four decades has witnessed a rapid overgrowth of publications using pyroglutamic
acid as a preferred asymmetric precursor and these have been well documented. Pyroglutamic
acid has two differential carbonyl groups a lactam carbonyl and a carboxylic functionality
along with an NH group, and all of these functionalities can be further derivatized/ transformed and
in turn opened avenues for the synthesis of variety of molecules. Derived easily from glutamic acid
by internal cyclization, pyroglutamic acid offers a cheap and very good source of chirality and has
provided an important tool for the synthesis of natural products/intermediates to natural products.
Herein, we wish to describe the exploitation of the chemistry of pyroglutamic acid and its derivatives
in the asymmetric synthesis of natural products establishing its versatility as a privileged asymmetric
precursor.
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Affiliation(s)
- Sharad Kumar Panday
- Department of Applied Chemistry, Faculty of Engineering & Technology, M.J.P. Rohilkhand University, Bareilly, U.P., India
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31
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Hou KQ, Zhou F, Chen XP, Ge Y, Chan ASC, Xiong XF. Asymmetric Synthesis of Oxindole-Derived Vicinal Tetrasubstituted Acyclic Amino Acid Derivatives by the Mannich-Type Reaction. J Org Chem 2020; 85:9661-9671. [PMID: 32603113 DOI: 10.1021/acs.joc.0c00981] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The catalytic asymmetric Mannich-type reaction of 3-hydroxy/3-aminooxindoles with 2-aminoacrylates to afford oxindole-derived acyclic amino acid derivatives bearing vicinal tetrasubstituted stereocenters is reported. (DHQ)2PHAL (4g) and quinine-derived squaramide (4d) were identified as efficient catalysts. Transformations of the Mannich-type reaction products highlight the utility of this synthetic strategy.
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Affiliation(s)
- Ke-Qiang Hou
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Feng Zhou
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xue-Ping Chen
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yang Ge
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Albert S C Chan
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiao-Feng Xiong
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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32
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Shen Y, Shen ML, Wang PS. Light-Mediated Chiral Phosphate Catalysis for Asymmetric Dicarbofunctionalization of Enamides. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02660] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yang Shen
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Meng-Lan Shen
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Pu-Sheng Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
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33
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Peng L, He Z, Xu X, Guo C. Cooperative Ni/Cu‐Catalyzed Asymmetric Propargylic Alkylation of Aldimine Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lingzi Peng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Zhuozhuo He
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Xianghong Xu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
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34
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Peng L, He Z, Xu X, Guo C. Cooperative Ni/Cu‐Catalyzed Asymmetric Propargylic Alkylation of Aldimine Esters. Angew Chem Int Ed Engl 2020; 59:14270-14274. [DOI: 10.1002/anie.202005019] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/02/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Lingzi Peng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Zhuozhuo He
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Xianghong Xu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Hefei 230026 China
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35
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Das S, Kumar R, Devadkar A, Panda TK. Zinc Complexes ofβ‐Ketoiminato Ligands as Efficient Catalysts for the Synthesis of α‐Amino Nitriles via Strecker Reaction. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Suman Das
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
| | - Ravi Kumar
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
| | - Ajitrao Devadkar
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
| | - Tarun K. Panda
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
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36
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Wu HM, Zhang Z, Xiao F, Wei L, Dong XQ, Wang CJ. Stereodivergent Synthesis of α-Quaternary Serine and Cysteine Derivatives Containing Two Contiguous Stereogenic Centers via Synergistic Cu/Ir Catalysis. Org Lett 2020; 22:4852-4857. [DOI: 10.1021/acs.orglett.0c01687] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Hui-Min Wu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zongpeng Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Fan Xiao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Liang Wei
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xiu-Qin Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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37
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Kuwano S, Nishida Y, Suzuki T, Arai T. Catalytic Asymmetric Mannich‐Type Reaction of Malononitrile with N‐Boc α‐Ketiminoesters Using Chiral Organic Base Catalyst with Halogen Bond Donor Functionality. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000092] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Satoru Kuwano
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of ScienceChiba University 1-33 Yayoi, Inage Chiba 263-8522 Japan
| | - Yuki Nishida
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of ScienceChiba University 1-33 Yayoi, Inage Chiba 263-8522 Japan
| | - Takumi Suzuki
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of ScienceChiba University 1-33 Yayoi, Inage Chiba 263-8522 Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of ScienceChiba University 1-33 Yayoi, Inage Chiba 263-8522 Japan
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38
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Palladium-catalyzed asymmetric allylic C-H alkylation of 1,4-dienes and glycine Schiff bases. Sci China Chem 2020. [DOI: 10.1007/s11426-019-9687-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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39
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Lin Q, Hu B, Xu X, Dong S, Liu X, Feng X. Chiral N, N'-dioxide/Mg(OTf) 2 complex-catalyzed asymmetric [2,3]-rearrangement of in situ generated ammonium salts. Chem Sci 2020; 11:3068-3073. [PMID: 34122811 PMCID: PMC8157646 DOI: 10.1039/c9sc06342k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/18/2020] [Indexed: 11/21/2022] Open
Abstract
Catalytic enantioselective [2,3]-rearrangements of in situ generated ammonium ylides from glycine pyrazoleamides and allyl bromides were achieved by employing a chiral N,N'-dioxide/MgII complex as the catalyst. This protocol provided a facile and efficient synthesis route to a series of anti-α-amino acid derivatives in good yields with high stereoselectivities. Moreover, a possible catalytic cycle was proposed to illustrate the reaction process and the origin of stereoselectivity.
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Affiliation(s)
- Qianchi Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Bowen Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xi Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
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40
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Gui H, Jangra H, Mao B, Wang T, Yi H, Xu Q, Wei Y, Zipse H, Shi M. Construction of α,α‐disubstituted α‐Amino Acid Derivatives
via
aza‐Morita‐Baylis‐Hillman Reactions of 2‐Aminoacrylates with Activated Olefins. ChemCatChem 2020. [DOI: 10.1002/cctc.201901987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hou‐Ze Gui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Harish Jangra
- Department of ChemistryLMU München Butenandtstrasse 5–13 81377 München Germany
| | - Ben Mao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Tian‐Yu Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Heng Yi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Qin Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Linglin Lu Shanghai 200032 China
| | - Hendrik Zipse
- Department of ChemistryLMU München Butenandtstrasse 5–13 81377 München Germany
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Linglin Lu Shanghai 200032 China
- Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen 518000 Guangdong China
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41
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Nam TK, Jang DO. A synthetic route toward α,α-dialkyl α-amino ester derivatives via radical addition to hydrazone derivatives of α-ketoesters under “on-water” conditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151411] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Kong WX, Xie SJ, Cao CYZ, Zhang CW, Wang C, Duan WL. Asymmetric construction of quaternary α-nitro amides by palladium-catalyzed C(sp3)–H arylation. Chem Commun (Camb) 2020; 56:2292-2295. [DOI: 10.1039/c9cc07854a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A Pd-catalyzed enantioselective C(sp3)–H arylation of N-(o-Br-aryl) anilides has been disclosed for the preparation of optically active quaternary amino acid derivatives. Quaternary α-nitro amides are constructed with stereoselectivities of up to 98% ee.
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Affiliation(s)
- Wei-Xin Kong
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Shi-Jing Xie
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chen-Yao-Zi Cao
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chao-Wei Zhang
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chuanyong Wang
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Wei-Liang Duan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
- School of Chemistry and Chemical Engineering
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43
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Wu C, Xu M. Palladium‐Catalyzed Highly Enantioselective Arylation of Cyclic
N
‐Sulfonyl α‐Ketimino Esters towards the Synthesis of α‐Quaternary Chiral Amino Acid Derivatives. ChemCatChem 2019. [DOI: 10.1002/cctc.201901933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Chun‐Yan Wu
- State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
| | - Ming‐Hua Xu
- State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- Shenzhen Grubbs Institute and Department of ChemistrySouthern University of Science and Technology 1088 Xueyuan Boulevard Shenzhen 518055 P. R. China
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44
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Zhu Q, Meng B, Gu C, Xu Y, Chen J, Lei C, Wu X. Diastereo- and Enantioselective Synthesis of Quaternary α-Amino Acid Precursors by Copper-Catalyzed Propargylation. Org Lett 2019; 21:9985-9989. [DOI: 10.1021/acs.orglett.9b03894] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Qiongqiong Zhu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
| | - Beibei Meng
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
| | - Congzheng Gu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
| | - Ye Xu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
| | - Jie Chen
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
| | - Chuanhu Lei
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
| | - Xiaoyu Wu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, People’s Republic of China
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
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45
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Hayakawa I, Nagayasu A, Sakakura A. Toward the Synthesis of SB-203207: Construction of Four Contiguous Nitrogen-Containing Stereogenic Centers. J Org Chem 2019; 84:15614-15623. [PMID: 31702152 DOI: 10.1021/acs.joc.9b02627] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
SB-203207 is an altemicidin-type alkaloid that potently inhibits isoleucyl tRNA synthetase activity. Its main structural feature is a hexahydro-6-azaindene framework containing a unique β-hydroxy α,α-disubstituted α-amino acid moiety on the cyclopentane portion. Herein we have established a method for constructing the four contiguous nitrogen-containing stereogenic centers of SB-203207 by using as key steps the stereoselective alkylation of bowl-shaped tricyclic lactone to construct a quaternary carbon at C1, the stereoselective hydroboration-oxidation reaction to install the C2 hydroxy group, and the Curtius rearrangement to introduce a nitrogen atom onto the C1 quaternary carbon.
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Affiliation(s)
- Ichiro Hayakawa
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushima-naka , Kita-ku, Okayama 700-8530 , Japan
| | - Anna Nagayasu
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushima-naka , Kita-ku, Okayama 700-8530 , Japan
| | - Akira Sakakura
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushima-naka , Kita-ku, Okayama 700-8530 , Japan
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46
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Wen Y, Xiao XS, Jia GK. Crystal structure of 3-methyl-2-phenyl-1,8-naphthyridine, C15H12N2. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2019-0364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractC15H12N2, monoclinic, P21/c (no. 14), a = 7.323(4) Å, b = 6.975(3) Å, c = 22.411(11) Å, β = 93.195(5)°, V = 1143.0(10) Å3, Z = 4, Rgt(F) = 0.0457, wRref(F2) = 0.1324, T = 296(2) K.
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Affiliation(s)
- Yuan Wen
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou Hunan 425199, P.R. China
| | - Xin-Sheng Xiao
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou Hunan 425199, P.R. China
| | - Guo-Kai Jia
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou Hunan 425199, P.R. China
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47
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Bhakta U, Kattamuri PV, Siitonen JH, Alemany LB, Kürti L. Enantioselective Catalytic Allylation of Acyclic Ketiminoesters: Synthesis of α-Fully-Substituted Amino Esters. Org Lett 2019; 21:9208-9211. [PMID: 31663756 DOI: 10.1021/acs.orglett.9b03574] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We report the first direct catalytic enantioselective allylation of acyclic α-ketiminoesters to afford α-allyl-α-aryl and α-allyl-α-trifluoromethyl amino esters in excellent isolated yield (91-99%) and with high optical purity (90-99+% ee). The allylation proceeds on a gram scale with 5-10 mol % of indium(I) iodide and commercially available BOX-type ligands. The allylated products are easily converted to enantiomerically enriched α-substituted proline derivatives.
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Affiliation(s)
- Urmibhusan Bhakta
- Department of Chemistry , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
| | - Padmanabha V Kattamuri
- Department of Chemistry , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
| | - Juha H Siitonen
- Department of Chemistry , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
| | - Lawrence B Alemany
- Department of Chemistry , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
- Shared Equipment Authority , Rice University , 6100 Main Street , Houston , Texas 77005 , United States
| | - László Kürti
- Department of Chemistry , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
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48
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Wang J, Dai Z, Xiong C, Zhu J, Lu J, Zhou Q. Palladium‐Catalyzed Allylic Alkylation of Aldimine Esters with Vinyl‐Cyclopropanes to Yield α,α‐Disubstituted α‐Amino Acid Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiahua Wang
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Cheng Xiong
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Jin Zhu
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Jinrong Lu
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of ChemistryChina Pharmaceutical University Nanjing 211198 People's Republic of China
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49
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Shimizu M, Mushika M, Mizota I, Zhu Y. Double nucleophilic addition to iminomalonate, leading to the synthesis of quaternary α-amino diesters and desymmetrization of the products. RSC Adv 2019; 9:23400-23407. [PMID: 35514493 PMCID: PMC9067299 DOI: 10.1039/c9ra04889h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 07/22/2019] [Indexed: 01/24/2023] Open
Abstract
Alkylation of iminomalonate with Grignard reagents followed by oxidation and allylation gave symmetrical quaternary α-amino diesters in good yields. Subsequent desymmetrization of a diol derivative from these products was conducted via asymmetric carbamylation catalyzed by Cu-Bnbox to give chiral quaternary aminodiol mono-carbamates.
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Affiliation(s)
- Makoto Shimizu
- School of Energy Science and Engineering, Nanjing Tech University Nanjing 211816 Jiangsu Province China
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University Tsu Mie 514-8507 Japan
| | - Miki Mushika
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University Tsu Mie 514-8507 Japan
| | - Isao Mizota
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University Tsu Mie 514-8507 Japan
| | - Yusong Zhu
- School of Energy Science and Engineering, Nanjing Tech University Nanjing 211816 Jiangsu Province China
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50
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Bojanowski J, Sieroń L, Albrecht A. Enantioselective Synthesis of Chromanones Bearing an α,α-Disubstituted α-Amino Acid Moiety via Decarboxylative Michael Reaction. Molecules 2019; 24:E2565. [PMID: 31311096 PMCID: PMC6681191 DOI: 10.3390/molecules24142565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 11/30/2022] Open
Abstract
In this manuscript, a novel, decarboxylative Michael reaction between α-substituted azlactones and chromone-3-carboxylic acids is described. The reaction proceeds in a sequence Michael addition followed by decarboxylative deprotonation, and it results in the formation of chromanones bearing an azlactone structural unit. The possibility of transforming an azlactone moiety into a protected α,α-disubstituted α-amino acid derivative is also demonstrated.
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Affiliation(s)
- Jan Bojanowski
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Lesław Sieroń
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Anna Albrecht
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
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