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Laha JK, Hunjan MK. Diversity in Heterocycle Synthesis Using α-Iminocarboxylic Acids: Decarboxylation Dichotomy. J Org Chem 2022; 87:2315-2323. [DOI: 10.1021/acs.joc.1c02110] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Mandeep Kaur Hunjan
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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2
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Zhang Y, Jiang W, Bao X, Qiu Y, Yuan Y, Yang C, Huo C. Photocatalyzed Reverse Polarity Oxidative Povarov Reaction of Glycine Derivatives with Maleimides. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yongxin Zhang
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Wei Jiang
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Xiazhen Bao
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Yifeng Qiu
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Yong Yuan
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Caixia Yang
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
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3
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Inokuma T. Synthesis of Non-canonical Amino Acids and Peptide Containing Them for Establishment of the Template for Drug Discovery. Chem Pharm Bull (Tokyo) 2021; 69:303-313. [PMID: 33790076 DOI: 10.1248/cpb.c21-00031] [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] [Indexed: 11/22/2022]
Abstract
Non-canonical amino acid derivatives are an attractive scaffold for novel drug candidates. Among the methods used to prepare this motif, the asymmetric Mannich-type reaction of α-imino carboxylic acid derivatives is a preeminent strategy because a wide variety of non-canonical amino acids can be accessed by changing only the nucleophile. Preparing the common substrate is difficult, however, which makes this method problematic. We developed a convenient method for synthesizing common substrates using MnO2-mediated oxidation of stable precursors. Peptides bearing non-canonical amino acids are another attractive synthetic target. We propose a new approach for synthesizing non-canonical amino acid-containing peptides by directly applying various organic reactions to peptidic substrates. Using hydrophobic anchor-supported peptides, we directly applied ring-closing metathesis and asymmetric Friedel-Crafts reactions to peptidic substrates. We also developed a novel recyclable organocatalyst according to the nature of the hydrophobic anchor tagged compound.
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Affiliation(s)
- Tsubasa Inokuma
- Graduate School of Biomedical Sciences, Tokushima University
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4
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Liang J, Fu Y, Bao X, Ou L, Sang T, Yuan Y, Huo C. Cyanation of glycine derivatives. Chem Commun (Camb) 2021; 57:3014-3017. [PMID: 33623936 DOI: 10.1039/d0cc08126d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report a catalytic oxidative C-H cyanation of glycine derivatives using a simple copper(i) catalyst with NFSI as an oxidant via a radical process to furnish α-cyano glycine derivatives, which are useful intermediates for organic synthesis. CuCl acted as both a one-electron reductant and a transition-metal catalyst in this transformation. NFSI served as a one-electron oxidant and generated a N-centered radical as a H-abstractor. The reaction displayed broad substrate scope and mild reaction conditions.
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Affiliation(s)
- Jia Liang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China.
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5
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Wang J, Su Y, Quan Z, Li J, Yang J, Yuan Y, Huo C. Visible-light promoted α-alkylation of glycine derivatives with alkyl boronic acids. Chem Commun (Camb) 2021; 57:1959-1962. [DOI: 10.1039/d0cc07688k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A visible-light-mediated aerobic α-alkylation reaction of glycine derivatives with alkyl boronic acids has been established in the presence of a Ru/Cu catalyst system, giving the desired radical coupling products efficiently.
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Affiliation(s)
- Jiayuan Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yingpeng Su
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Zhengjun Quan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jun Li
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jie Yang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yong Yuan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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6
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Yoshida Y, Kasuya R, Mino T, Sakamoto M. Phase-transfer catalysed asymmetric synthesis of α-chiral tetrasubstituted α-aminothioesters. Org Biomol Chem 2021; 19:6402-6406. [PMID: 34100506 DOI: 10.1039/d1ob00829c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral amino thioesters are important scaffolds owing to their widespread use in organic synthesis and biosynthesis. Despite their usefulness, their asymmetric synthesis, especially the catalytic asymmetric synthesis of α-chiral tetrasubstituted α-aminothioesters, is limited, with only one example reported so far. Herein, we report the first phase-transfer catalysed asymmetric synthesis of α-chiral tetrasubstituted α-aminothioesters to afford the corresponding products in up to 81% ee.
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Affiliation(s)
- Yasushi Yoshida
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| | - Reina Kasuya
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| | - Takashi Mino
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| | - Masami Sakamoto
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
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7
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Inokuma T, Sakakibara T, Someno T, Masui K, Shigenaga A, Otaka A, Yamada KI. Asymmetric Synthesis of α-Amino Phosphonic Acids using Stable Imino Phosphonate as a Universal Precursor. Chemistry 2019; 25:13829-13832. [PMID: 31449339 DOI: 10.1002/chem.201903572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Indexed: 01/02/2023]
Abstract
A practical method for synthesizing chiral α-amino phosphonic acid derivatives was developed. Readily available and stable N-o-nitrophenylsulfenyl (Nps) imino phosphonate was utilized as a substrate for a highly enantioselective Friedel-Crafts-type addition of indole or pyrrole nucleophiles catalyzed by chiral phosphoric acid. The resulting adduct was easily converted into N-9-fluorenylmethyloxycarbonyl (Fmoc) amino phosphonic acid, which is useful for synthesizing peptides containing an amino phosphonic acid.
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Affiliation(s)
- Tsubasa Inokuma
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Takuya Sakakibara
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Takatoshi Someno
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Kana Masui
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Akira Shigenaga
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Akira Otaka
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Ken-Ichi Yamada
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
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8
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Wu R, Li J, Wang Y, Quan Z, Su Y, Huo C. Copper‐Catalyzed Aerobic Oxidative Dehydrogenative Ring‐Opening Reaction of Glycine Esters with α′‐Angelicalactone: Approach to Construct α‐Amino‐γ‐Ketopimelates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Rui Wu
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
| | - Jun Li
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
| | - Yajun Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
| | - Zhengjun Quan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
| | - Yingpeng Su
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou, Gansu 730070 People's Republic of China
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9
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Inokuma T. Asymmetric Synthesis of Unnatural Amino Acid-containing Peptides <i>via</i> Direct Asymmetric Reaction of Peptidyl Compounds. YAKUGAKU ZASSHI 2018; 138:1371-1379. [DOI: 10.1248/yakushi.18-00143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tsubasa Inokuma
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University
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10
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Biancalana L, Tuci G, Piccinelli F, Marchetti F, Bortoluzzi M, Pampaloni G. Vanadium(v) oxoanions in basic water solution: a simple oxidative system for the one pot selective conversion of l-proline to pyrroline-2-carboxylate. Dalton Trans 2017; 46:15059-15069. [PMID: 29063086 DOI: 10.1039/c7dt02702h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unprecedented, direct chemical oxidation of l-proline to pyrroline-2-carboxylate was achieved in water (pH 9-10) by means of NH4VO3/NH3 or V2O5/MOH (K = Na, K), and the anion was fully characterized as ammonium or alkaline metal salts. Quantitative yield and higher atom economy performance were achieved with the latter system, the alkaline salts being more stable than the ammonium one. Different mixed valence V(iv)/V(v) compounds precipitated from the reaction mixtures depending on the nature of the employed base. A possible reaction mechanism is proposed according to DFT calculations. The analogous reaction of trans-4-hydroxy-l-proline with NH4VO3/NH3 afforded pyrrole-2-carboxylic acid in 81% yield, while sarcosine underwent prevalent decomposition under similar experimental conditions. Instead, no reaction was observed with primary (glycine, l-alanine, l-phenylalanine) and tertiary α-amino acids (N,N-dimethyl-l-phenylalanine, N,N-dimethylglycine).
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Affiliation(s)
- Lorenzo Biancalana
- University of Pisa, Dipartimento di Chimica e Chimica Industriale, Via G. Moruzzi 13, I-56124 Pisa, Italy.
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