1
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Li Y, Lu D, Gong Y. Cobalt(II)-Catalyzed Selective Three-Component Oxyalkylation of N-Aryl Glycinates: A Route to CF 3-Labeled Threonine Analogues. J Org Chem 2023. [PMID: 38033236 DOI: 10.1021/acs.joc.3c01874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Glycinates, protected enols, and an electrophilic trifluoromethylating reagent were employed to assemble CF3-labeled threonine analogues through a radical addition cascade. To suppress the competing oxidation of the oxyalkyl radical intermediate, various redox catalysts were evaluated and Co(II) exhibited supreme selectivity control with a proper counterion. A series of glycinate and related peptides were thus successfully modified under Co-catalysis. Mechanistic studies revealed that a N-aryl glycinate could be preferentially oxidized by cobalt over the oxyalkyl radical to generate an imine intermediate, and the key to this selectivity could be ascribed to the prechelation of glycinate, as well as a weakly basic carboxylate counterion.
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Affiliation(s)
- Yadong Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Dengfu Lu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
- Research Institute of Huazhong University of Science and Technology in Shenzhen, 9 Yuexing Third Road, Shenzhen 518063, Guangdong, China
| | - Yuefa Gong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
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2
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Synthesis of β-hydroxy-α-amino acid derivatives by the cross-dehydrogenative coupling of N-arylglycine esters with α-hydroxy ketones. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Kratena N, Gökler T, Maltrovsky L, Oburger E, Stanetty C. A Unified Approach to Phytosiderophore Natural Products. Chemistry 2021; 27:577-580. [PMID: 32897577 PMCID: PMC7821100 DOI: 10.1002/chem.202004004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Indexed: 11/10/2022]
Abstract
This work reports on the concise total synthesis of eight natural products of the mugineic acid and avenic acid families (phytosiderophores). An innovative "east-to-west" assembly of the trimeric products resulted in a high degree of divergence enabling the formation of the final products in just 10 or 11 steps each with a minimum of overall synthetic effort. Chiral pool starting materials (l-malic acid, threonines) were employed for the outer building blocks while the middle building blocks were accessed by diastereo- and enantioselective methods. A highlight of this work consists in the straightforward preparation of epimeric hydroxyazetidine amino acids, useful building blocks on their own, enabling the first synthesis of 3''-hydroxymugineic acid and 3''-hydroxy-2'-deoxymugineic acid.
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Affiliation(s)
- Nicolas Kratena
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 91060ViennaAustria
| | - Tobias Gökler
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 91060ViennaAustria
| | - Lara Maltrovsky
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 91060ViennaAustria
| | - Eva Oburger
- Institute of Soil ResearchBOKU ViennaKonrad-Lorenz-Strasse 243430TullnAustria
| | - Christian Stanetty
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 91060ViennaAustria
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4
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Yoshimura F, Itoh R, Torizuka M, Mori G, Tanino K. Chemical Synthesis of Brasilicardins. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Ryusei Itoh
- Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Makoto Torizuka
- Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Genki Mori
- Department of Chemistry, Faculty of Science, Hokkaido University
| | - Keiji Tanino
- Department of Chemistry, Faculty of Science, Hokkaido University
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5
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Arimitsu S, Oshiro K, Endo K, Gima E, Poorsadeghi S. Preparation of Enantiomerically Pure β,β‐Diaryl β‐Hydroxy‐α‐Amino Acids and Evaluation of Their Potential as Organocatalysts. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Satoru Arimitsu
- Department of Chemistry Biology and Marine ScienceUniversity of the Ryukyus 1 Senbaru, Nakagami Nishihara, Okinawa 903-0123 Japan
| | - Koki Oshiro
- Department of Chemistry Biology and Marine ScienceUniversity of the Ryukyus 1 Senbaru, Nakagami Nishihara, Okinawa 903-0123 Japan
| | - Katsuki Endo
- Department of Chemistry Biology and Marine ScienceUniversity of the Ryukyus 1 Senbaru, Nakagami Nishihara, Okinawa 903-0123 Japan
| | - Emi Gima
- Department of Chemistry Biology and Marine ScienceUniversity of the Ryukyus 1 Senbaru, Nakagami Nishihara, Okinawa 903-0123 Japan
| | - Samira Poorsadeghi
- Department of Chemistry Biology and Marine ScienceUniversity of the Ryukyus 1 Senbaru, Nakagami Nishihara, Okinawa 903-0123 Japan
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6
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Davies SG, Fletcher AM, Greenaway CJ, Kennedy MS, Mayer C, Roberts PM, Thomson JE. Trading N and O. Part 4: Asymmetric synthesis of syn-β-substituted-α-amino acids. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Hibi M, Kasahara T, Kawashima T, Yajima H, Kozono S, Smirnov SV, Kodera T, Sugiyama M, Shimizu S, Yokozeki K, Ogawa J. Multi-Enzymatic Synthesis of Optically Pure β-Hydroxy α-Amino Acids. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400672] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Lou S, Ramirez A, Conlon DA. Catalyticsyn-Selective Direct Aldol Reactions of Benzophenone Glycine Imine with Aromatic, Heteroaromatic and Aliphatic Aldehydes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400639] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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9
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Davies SG, Fletcher AM, Frost AB, Roberts PM, Thomson JE. Trading N and O. Part 2: Exploiting aziridinium intermediates for the synthesis of β-hydroxy-α-amino acids. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Fan S, Liu S, Zhang H, Liu Y, Yang Y, Jin L. Biocatalytic Synthesis of Enantiopure β-Methoxy-β-arylalanine Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402470] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Zhang Y, Farrants H, Li X. Adding a Functional Handle to Nature′s Building Blocks: The Asymmetric Synthesis of β-Hydroxy-α-Amino Acids. Chem Asian J 2014; 9:1752-64. [DOI: 10.1002/asia.201400111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 02/25/2014] [Indexed: 11/06/2022]
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12
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Adachi M, Imazu T, Sakakibara R, Satake Y, Isobe M, Nishikawa T. Total Synthesis of Chiriquitoxin, an Analogue of Tetrodotoxin Isolated from the Skin of a Dart Frog. Chemistry 2014; 20:1247-51. [DOI: 10.1002/chem.201304110] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Indexed: 11/11/2022]
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13
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Davies SG, Fletcher AM, Frost AB, Lee JA, Roberts PM, Thomson JE. Trading N and O: asymmetric syntheses of β-hydroxy-α-amino acids via α-hydroxy-β-amino esters. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Li Q, Zhang H, Li C, Xu P. Stereoselective Synthesis of (−)-Chloramphenicol, (+)-Thiamphenicol and (+)-Sphinganine via Chiral Tricyclic Iminolactone. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201201093] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Kannappan J, Bedekar AV. An Environment Friendly Preparation of 3-Bromocamphor and Camphorquinone. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13295761942437] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The bromination of camphor has been carried out on a multi-gram scale by a mixture of KBr and KBrO3 in the presence of acid or with HBr/NaBr - H+ and H2O2/oxone® as the oxidant. The 3-bromocamphor is then efficiently converted to camphorquinone by an improved oxidation protocol using DMSO and sodium carbonate of tetrabutyl ammonium iodide.
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Affiliation(s)
- Jayaraman Kannappan
- Apicore Pharmaceuticals Pvt. Ltd, Block No. 252-253, Dhobikuva Village, Padra-Jumbusar Highway, Padra Taluka, Vadodara 391 440, India
| | - Ashutosh V. Bedekar
- Department of Chemistry, Faculty of Science, M. S. University of Baroda, Vadodara, 390 002, India
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Gavrilyuk J, Uehara H, Otsubo N, Hessell A, Burton DR, Barbas CF. Potent inhibition of HIV-1 entry with a chemically programmed antibody aided by an efficient organocatalytic synthesis. Chembiochem 2011; 11:2113-8. [PMID: 20845359 DOI: 10.1002/cbic.201000432] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Julia Gavrilyuk
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
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Tellam JP, Carbery DR. Development of the Ireland−Claisen Rearrangement of Alkoxy- and Aryloxy-Substituted Allyl Glycinates. J Org Chem 2010; 75:7809-21. [PMID: 20958078 DOI: 10.1021/jo1017124] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James P. Tellam
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - David R. Carbery
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
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18
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Luo YC, Zhang HH, Wang Y, Xu PF. Synthesis of α-amino acids based on chiral tricycloiminolactone derived from natural (+)-camphor. Acc Chem Res 2010; 43:1317-30. [PMID: 20672798 DOI: 10.1021/ar100050p] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amino acids are one of the most important classes of the building blocks of life: they are the structural subunits of proteins, peptides, and many secondary metabolites. In addition to the 20 α-amino acids that constitute the backbone of proteins, hundreds of other natural α-amino acids have been discovered either in free form or as components in natural products. The difference between these molecules is the substituents at the chiral carbon situated between the amino and carboxyl moieties; this carbon (and any atom along a chain attached to it) is thus an important synthetic target. Because tailor-made α-amino acids are increasingly popular in biochemistry and organic synthesis, further refinement in synthetic methods to generate both natural (L-configuration) and unnatural (D-configuration) amino acids is a very active area of current research. In this Account, we examine the tricycloiminolactones, which are versatile glycine equivalents derived from natural camphor. We have developed the tricycloiminolactones in our laboratory and used them in the synthesis of several kinds of enantiopure α-amino acids. As nucleophiles, enolated tricycloiminolactones were shown to successfully participate in alkylations, Aldol reactions, Michael additions, and Mannich reactions. These reactions all gave excellent stereoselectivities and high yields. Simple conversion of the products offered α-alkyl-α-amino acids, α,α-dialkyl-α-amino acids, β-hydroxy-α-amino acids, α,γ-diamino acids, and α,β-diamino acids. One particular advantage is that the same electrophile can react with two chiral templates in the same way, thus affording access to both enantiomeric amino acids. In other words, some natural (L-configuration) α-amino acids and their unnatural (D-configuration) counterparts can be prepared very conveniently. The relation between substrate structures and product stereoconformations derived from our investigations serves as a convenient guide in the synthesis of useful chiral amino acids. In addition, highly stereoselective 1,3-diploar cycloadditions between alkenes and chiral nitrones derived from tricycloiminolactones provide a potential method for the synthesis of γ-hydroxy-α-amino acids. We also discuss applications of our methods in the synthesis of complex natural products, including conagenin, polyoxamic acid, lactacystin, and sphingofungin F. The preparation of some clinically important drug molecules, such as thiaphenicol, florfenicol, and chloramphenicol, was greatly simplified with our methods. The tricycloiminolactones offer a number of advantages in the synthesis of both natural and unnatural α-amino acids and provide many useful building blocks in the synthetic pursuit of complex molecules.
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Affiliation(s)
- Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Huan-Huan Zhang
- State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yao Wang
- State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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Gan FF, Yang SB, Luo YC, Yang WB, Xu PF. Total Synthesis of Sphingofungin F Based on Chiral Tricyclic Iminolactone. J Org Chem 2010; 75:2737-40. [DOI: 10.1021/jo100183d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Feng-Feng Gan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PRC
| | - Shao-Bo Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PRC
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PRC
| | - Wan-Bang Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PRC
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PRC
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Martelli G, Orena M, Rinaldi S, Sabatino P. Diastereoselective functionalisation of Baylis–Hillman adducts: a convenient approach to α-methyl-α-amino acids. Amino Acids 2010; 39:489-97. [DOI: 10.1007/s00726-009-0465-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Accepted: 12/24/2009] [Indexed: 11/24/2022]
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21
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Ham WH, Mu Y, Lee YS, Tian YS, Lee GJ, Joo JE. Stereoselective Intramolecular Cyclization of Isopentenyl Benzamide via π-Allylpalladium Complex Catalyzed by Pd(0). HETEROCYCLES 2010. [DOI: 10.3987/com-09-11850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Vecchione MK, Li L, Seidel D. Catalytic enantioselective aldol additions of α-isothiocyanato imides to α-ketoesters. Chem Commun (Camb) 2010; 46:4604-6. [DOI: 10.1039/c0cc00556h] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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