1
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Zhang H, Wen W, Lu ZX, Wu ZL, Cai T, Guo QX. Core Structure-Oriented Asymmetric α-Allenylic Alkylation of Amino Acid Esters Enabled by Chiral Aldehyde/Palladium Catalysis. Org Lett 2024; 26:153-159. [PMID: 38133484 DOI: 10.1021/acs.orglett.3c03762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Aiming at the reported chiral synthons leading to manzacidins A and D, here we report a highly efficient catalytic asymmetric α-allenylic alkylation reaction of NH2-unprotected amino acid esters that is promoted by combined chiral aldehyde/palladium catalysis. Fifty examples of unnatural α,α-disubstituted amino acid esters are reported with good-to-excellent yields and stereoselectivities. Based on this methodology, a key intermediate leading to manzacidin C and its other three stereoisomers is prepared accordingly.
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Affiliation(s)
- Hao Zhang
- Key Laboratory of Applied Chemistry of Chongqing Municipality and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Wei Wen
- Key Laboratory of Applied Chemistry of Chongqing Municipality and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Ze-Xi Lu
- Key Laboratory of Applied Chemistry of Chongqing Municipality and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Zhu-Lian Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Tian Cai
- Key Laboratory of Applied Chemistry of Chongqing Municipality and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Qi-Xiang Guo
- Key Laboratory of Applied Chemistry of Chongqing Municipality and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
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2
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Stout CN, Renata H. Reinvigorating the Chiral Pool: Chemoenzymatic Approaches to Complex Peptides and Terpenoids. Acc Chem Res 2021; 54:1143-1156. [PMID: 33543931 DOI: 10.1021/acs.accounts.0c00823] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Biocatalytic transformations that leverage the selectivity and efficiency of enzymes represent powerful tools for the construction of complex natural products. Enabled by innovations in genome mining, bioinformatics, and enzyme engineering, synthetic chemists are now more than ever able to develop and employ enzymes to solve outstanding chemical problems, one of which is the reliable and facile generation of stereochemistry within natural product scaffolds. In recognition of this unmet need, our group has sought to advance novel chemoenzymatic strategies to both expand and reinvigorate the chiral pool. Broadly defined, the chiral pool comprises cheap, enantiopure feedstock chemicals that serve as popular foundations for asymmetric total synthesis. Among these building blocks, amino acids and enantiopure terpenes, whose core structures can be mapped onto several classes of structurally and pharmaceutically intriguing natural products, are of particular interest to the synthetic community.In this Account, we summarize recent efforts from our group in leveraging biocatalytic transformations to expand the chiral pool, as well as efforts toward the efficient application of these transformations in natural products total synthesis, the ultimate testing ground for any novel methodology. First, we describe several examples of enzymatic generation of noncanonical amino acids as means to simplify the synthesis of peptide natural products. By extracting amino acid hydroxylases from native biosynthetic pathways, we obtain efficient access to hydroxylated variants of proline, lysine, arginine, and their derivatives. The newly installed hydroxyl moiety then becomes a chemical handle that can facilitate additional complexity generation, thereby expanding the pool of amino acid-derived building blocks available for peptide synthesis. Next, we present our efforts in enzymatic C-H oxidations of diverse terpene scaffolds, in which traditional chemistry can be combined with strategic applications of biocatalysis to selectively and efficiently derivatize several commercial terpenoid skeletons. The synergistic logic of this approach enables a small handful of synthetic intermediates to provide access to a plethora of terpenoid natural product families. Taken together, these findings demonstrate the advantages of applying enzymes in total synthesis in conjunction with established methodologies, as well as toward the expansion of the chiral pool to enable facile incorporation of stereochemistry during synthetic campaigns.
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Affiliation(s)
- Carter N. Stout
- Department of Chemistry, Scripps Research, 110 Scripps Way, Jupiter, Florida 33458, United States
| | - Hans Renata
- Department of Chemistry, Scripps Research, 110 Scripps Way, Jupiter, Florida 33458, United States
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3
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Liu Y, Ruan Z, Wang Y, Huang SH, Hong R. Stereoselectivity in a nitroso-ene cyclization: Formal synthesis of rac-manzacidins A and C. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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Li F, Zhang X, Renata H. Enzymatic CH functionalizations for natural product synthesis. Curr Opin Chem Biol 2018; 49:25-32. [PMID: 30269011 DOI: 10.1016/j.cbpa.2018.09.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/03/2018] [Indexed: 12/17/2022]
Abstract
Direct functionalization of CH bond is rapidly becoming an indispensible tool in chemical synthesis. However, due to the ubiquity of CH bonds, achieving site-selective functionalization remains an arduous task, especially on advanced synthetic intermediates or natural products. In contrast, Nature has evolved a multitude of enzymes capable of performing this task with extraordinary selectivity, and the use of these enzymes in organic synthesis may provide a viable solution to contemporary challenges in site-selective functionalization of complex molecules. This review covers recent applications of enzymatic CH functionalization strategies in natural product synthesis, both in the context of key building block preparation and late-stage functionalization of advanced synthetic intermediates.
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Affiliation(s)
- Fuzhuo Li
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Xiao Zhang
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Hans Renata
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA.
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5
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Meng SS, Tang WB, Zheng WH. Catalytically Enantioselective Synthesis of Acyclic α-Tertiary Amines through Desymmetrization of 2-Substituted 2-Nitro-1,3-diols. Org Lett 2018; 20:518-521. [DOI: 10.1021/acs.orglett.7b03581] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shan-Shui Meng
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
| | - Wu-Bang Tang
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
| | - Wen-Hua Zheng
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
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6
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Zwick CR, Renata H. Remote C-H Hydroxylation by an α-Ketoglutarate-Dependent Dioxygenase Enables Efficient Chemoenzymatic Synthesis of Manzacidin C and Proline Analogs. J Am Chem Soc 2018; 140:1165-1169. [PMID: 29283572 DOI: 10.1021/jacs.7b12918] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Selective C-H functionalization at distal positions remains a highly challenging problem in organic synthesis. Though Nature has evolved a myriad of enzymes capable of such feat, their synthetic utility has largely been overlooked. Here, we functionally characterize an α-ketoglutarate-dependent dioxygenase (Fe/αKG) that selectively hydroxylates the δ position of various aliphatic amino acids. Kinetic analysis and substrate profiling of the enzyme show superior catalytic efficiency and substrate promiscuity relative to other Fe/αKGs that catalyze similar reactions. We demonstrate the practical utility of this transformation in the concise syntheses of a rare alkaloid, manzacidin C, and densely substituted amino acid derivatives with remarkable step efficiency. This work provides a blueprint for future applications of Fe/αKG hydroxylation in complex molecule synthesis and the development of powerful synthetic paradigms centered on enzymatic C-H functionalization logic.
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Affiliation(s)
- Christian R Zwick
- Department of Chemistry, The Scripps Research Institute , 130 Scripps Way, Jupiter, Florida 33458, United States
| | - Hans Renata
- Department of Chemistry, The Scripps Research Institute , 130 Scripps Way, Jupiter, Florida 33458, United States
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7
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Narczyk A, Pieczykolan M, Stecko S. The synthesis of non-racemic β-alkyl-β-aryl-disubstituted allyl alcohols and their transformation into allylamines and amino acids bearing a quaternary stereocenter. Org Biomol Chem 2018; 16:3921-3946. [PMID: 29745946 DOI: 10.1039/c8ob00731d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two approaches to chiral β-alkyl-β-aryl allyl alcohols and their transformation into non-racemic allylamines and amino acid derivatives bearing a quaternary stereocenter are described.
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Affiliation(s)
- Aleksandra Narczyk
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Michał Pieczykolan
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Sebastian Stecko
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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8
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Kudoh T, Araki Y, Miyoshi N, Tanioka M, Sakakura A. Diastereodivergent Henry Reaction for the Stereoselective Construction of Nitrogen-Containing Tetrasubstituted Carbons: Application to Total Synthesis of Manzacidins A and C. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700568] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Takayuki Kudoh
- Graduate School of Natural Science and Technology; Okayama University; 3-1-1, Tsushima-naka, Kita-ku Okayama Japan
| | - Yuya Araki
- Graduate School of Natural Science and Technology; Okayama University; 3-1-1, Tsushima-naka, Kita-ku Okayama Japan
| | - Natsumi Miyoshi
- Graduate School of Natural Science and Technology; Okayama University; 3-1-1, Tsushima-naka, Kita-ku Okayama Japan
| | - Mizuho Tanioka
- Graduate School of Natural Science and Technology; Okayama University; 3-1-1, Tsushima-naka, Kita-ku Okayama Japan
| | - Akira Sakakura
- Graduate School of Natural Science and Technology; Okayama University; 3-1-1, Tsushima-naka, Kita-ku Okayama Japan
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9
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Pieczykolan M, Narczyk A, Stecko S. The Synthesis of Chiral β,β-Diaryl Allylic Alcohols and Their Use in the Preparation of α-Tertiary Allylamines and Quaternary α-Amino Acids. J Org Chem 2017; 82:5636-5651. [PMID: 28492314 DOI: 10.1021/acs.joc.7b00475] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An approach to nonracemic β,β-diarylsubstituted allyl alcohols is described. Their synthesis starts from l-lactic acid-derived propargyl alcohol, which is submitted to sequential Sonogashira/Suzuki or Sonagashira/Stille coupling reactions. Both approaches enable the synthesis of either (Z)- or (E)-allylic alcohols regarding the order of introducing coupling agents. The obtained allyl alcohols were applied in the synthesis of nonracemic α-tertiary allylamines via stereocontrolled cyanate-to-isocyanate sigmatropic rearrangement reactions of the corresponding allyl carbamates. The stereoselectivity of the process is controlled by the geometry of the double bond of the starting allyl derivative. As demonstrated, a rearrangement of (S,Z)-allyl carbamates provides (S)-teriary allylamines, whereas the transformation (S,E)-isomers leads to (R)-allylamines.
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Affiliation(s)
- Michał Pieczykolan
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Aleksandra Narczyk
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Sebastian Stecko
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
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10
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Nocquet PA, Henrion S, Macé A, Carboni B, Villalgordo JM, Carreaux F. The Allyl Cyanate/Isocyanate Rearrangement: An Efficient Tool for the Stereocontrolled Formation of Allylic C-N Bonds. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601316] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Pierre-Antoine Nocquet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS - Université de Rennes 1; 263 avenue du Général Leclerc, Campus de Beaulieu, Batiment 10A 35042 Rennes Cedex France
| | - Sylvain Henrion
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS - Université de Rennes 1; 263 avenue du Général Leclerc, Campus de Beaulieu, Batiment 10A 35042 Rennes Cedex France
| | - Aurélie Macé
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS - Université de Rennes 1; 263 avenue du Général Leclerc, Campus de Beaulieu, Batiment 10A 35042 Rennes Cedex France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS - Université de Rennes 1; 263 avenue du Général Leclerc, Campus de Beaulieu, Batiment 10A 35042 Rennes Cedex France
| | - Jose Manuel Villalgordo
- VillaPharma Research; Parque Tecnologico de Fuente Alamo, Ctra El Estrecho-Lobosillo, Av. Azul 30320 Murcia Spain
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS - Université de Rennes 1; 263 avenue du Général Leclerc, Campus de Beaulieu, Batiment 10A 35042 Rennes Cedex France
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11
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Tong TMT, Soeta T, Suga T, Kawamoto K, Hayashi Y, Ukaji Y. Formal Total Synthesis of Manzacidin C Based on Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Imines. J Org Chem 2017; 82:1969-1976. [DOI: 10.1021/acs.joc.6b02816] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thu Minh Thi Tong
- Division of Material Chemistry, Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Takahiro Soeta
- Division of Material Chemistry, Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Takuya Suga
- Division of Material Chemistry, Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Keisuke Kawamoto
- Division of Material Chemistry, Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Yoshihito Hayashi
- Division of Material Chemistry, Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Yutaka Ukaji
- Division of Material Chemistry, Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
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12
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Bretzke S, Scheeff S, Vollmeyer F, Eberhagen F, Rominger F, Menche D. Modular synthesis of the pyrimidine core of the manzacidins by divergent Tsuji-Trost coupling. Beilstein J Org Chem 2016; 12:1111-21. [PMID: 27340499 PMCID: PMC4902044 DOI: 10.3762/bjoc.12.107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/13/2016] [Indexed: 12/20/2022] Open
Abstract
The design, development and application of an efficient procedure for the concise synthesis of the 1,3-syn- and anti-tetrahydropyrimidine cores of manzacidins are reported. The intramolecular allylic substitution reaction of a readily available joint urea-type substrate enables the facile preparation of both diastereomers in high yields. The practical application of this approach is demonstrated in the efficient and modular preparation of the authentic heterocyclic cores of manzacidins, structurally unique bromopyrrole alkaloids of marine origin. Additional features of this route include the stereoselective generation of the central amine core with an appending quaternary center by an asymmetric addition of a Grignard reagent to a chiral tert-butanesulfinyl ketimine following an optimized Ellman protocol and a cross-metathesis of a challenging homoallylic urea substrate, which proceeds in good yields in the presence of an organic phosphoric acid.
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Affiliation(s)
- Sebastian Bretzke
- Institut für Organische Chemie, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Stephan Scheeff
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
| | - Felicitas Vollmeyer
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
| | - Friederike Eberhagen
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
| | - Frank Rominger
- Institut für Organische Chemie, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Dirk Menche
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
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13
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Szcześniak P, Pieczykolan M, Stecko S. The Synthesis of α,α-Disubstituted α-Amino Acids via Ichikawa Rearrangement. J Org Chem 2016; 81:1057-74. [PMID: 26726732 DOI: 10.1021/acs.joc.5b02628] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An approach to α,α-disubstituted α-amino acids is reported. The key step is allyl cyanate-to-isocyanate rearrangement. As demonstrated, the resultant allyl isocyanates can be directly trapped with various nucleophiles, for instance, alcohols, amines, and organometallic reagents, to provide a broad range of N-functionalized allylamines. The developed method has been successfully applied in the synthesis of two bioactive peptides: 2-aminoadamantane-2-carboxylic acid derived P2X7-evoked glutamate release inhibitor and 4-amino-tetrahydropyranyl-4-carboxylic acid derived dipeptide GSK-2793660, which is currently in clinical trials as cathepsin C inhibitor for the treatment of cystic fibrosis, noncystic fibrosis bronchiectasis, ANCA-associated vasculitis and bronchiectasis.
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Affiliation(s)
- Piotr Szcześniak
- Institute of Organic Chemistry , Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Michał Pieczykolan
- Institute of Organic Chemistry , Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Sebastian Stecko
- Institute of Organic Chemistry , Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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14
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Hager A, Vrielink N, Hager D, Lefranc J, Trauner D. Synthetic approaches towards alkaloids bearing α-tertiary amines. Nat Prod Rep 2015; 33:491-522. [PMID: 26621771 DOI: 10.1039/c5np00096c] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Alkaloids account for some of the most beautiful and biologically active natural products. Although they are usually classified along biosynthetic criteria, they can also be categorized according to certain structural motifs. Amongst these, the α-tertiary amine (ATA), i.e. a tetrasubstituted carbon atom surrounded by three carbons and one nitrogen, is particularly interesting. A limited number of methods have been described to access this functional group and fewer still are commonly used in synthesis. Herein, we review some approaches to asymmetrically access ATAs and provide an overview of alkaloid total syntheses where those have been employed.
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Affiliation(s)
- Anastasia Hager
- Fakultät für Chemie und Pharmazie, Ludwig-Maximilians-Universität München, and Munich Center for Integrated Protein Science, Butenandtstr. 5 - 13, 81377 München, Germany.
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15
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Brahmachari G. Design of Organic Transformations at Ambient Conditions: Our Sincere Efforts to the Cause of Green Chemistry Practice. CHEM REC 2015; 16:98-123. [DOI: 10.1002/tcr.201500229] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University); Santiniketan 731 235 West Bengal India
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16
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Brahmachari G, Kumar A, Srivastava AK, Gangwar S, Misra N, Gupta VK, Rajnikant R. Synthesis, spectroscopic characterization, X-ray analysis and theoretical studies on the spectral features (FT-IR, 1H-NMR), chemical reactivity, NBO analyses of 2-(4-fluorophenyl)-2-(4-fluorophenylamino)acetonitrile and its docking into IDO enzyme. RSC Adv 2015. [DOI: 10.1039/c5ra15797h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
One-pot green synthesis and combined spectral and theoretical studies of 2-(4-fluorophenyl)-2-(4-fluorophenylamino)acetonitrile along with its X-ray crystallographic properties are described.
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Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis
- Department of Chemistry
- Visva-Bharati (a Central University)
- Santiniketan-731 235
- India
| | - Abhishek Kumar
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | | | - Shashi Gangwar
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | - Neeraj Misra
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | - Vivek K. Gupta
- Post-Graduate Department of Physics & Electronics
- University of Jammu
- Jammu Tawi-180 006
- India
| | - Rajnikant Rajnikant
- Post-Graduate Department of Physics & Electronics
- University of Jammu
- Jammu Tawi-180 006
- India
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17
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Nagatomo M, Nishiyama H, Fujino H, Inoue M. Decarbonylative Radical Coupling of α-Aminoacyl Tellurides: Single-Step Preparation of γ-Amino and α,β-Diamino Acids and Rapid Synthesis of Gabapentin and Manzacidin A. Angew Chem Int Ed Engl 2014; 54:1537-41. [DOI: 10.1002/anie.201410186] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Indexed: 11/09/2022]
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18
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Nagatomo M, Nishiyama H, Fujino H, Inoue M. Decarbonylative Radical Coupling of α-Aminoacyl Tellurides: Single-Step Preparation of γ-Amino and α,β-Diamino Acids and Rapid Synthesis of Gabapentin and Manzacidin A. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410186] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Touchet S, Macé A, Roisnel T, Carreaux F, Bouillon A, Carboni B. [3,3]-Sigmatropic Rearrangement of Boronated Allylcyanates: A New Route to α-Aminoboronate Derivatives and Trisubstituted Tetrahydrofurans. Org Lett 2013; 15:2712-5. [DOI: 10.1021/ol401016x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sabrina Touchet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, CS 74205, 35042 Rennes Cedex, France, and BoroChem SAS, 7 rue Alfred Kastler, 14000 Caen, France
| | - Aurélie Macé
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, CS 74205, 35042 Rennes Cedex, France, and BoroChem SAS, 7 rue Alfred Kastler, 14000 Caen, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, CS 74205, 35042 Rennes Cedex, France, and BoroChem SAS, 7 rue Alfred Kastler, 14000 Caen, France
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, CS 74205, 35042 Rennes Cedex, France, and BoroChem SAS, 7 rue Alfred Kastler, 14000 Caen, France
| | - Alexandre Bouillon
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, CS 74205, 35042 Rennes Cedex, France, and BoroChem SAS, 7 rue Alfred Kastler, 14000 Caen, France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, CS 74205, 35042 Rennes Cedex, France, and BoroChem SAS, 7 rue Alfred Kastler, 14000 Caen, France
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Yoshimura T, Kinoshita T, Yoshioka H, Kawabata T. Asymmetric Intermolecular Conjugate Addition of Amino Acid Derivatives via Memory of Chirality: Total Synthesis of Manzacidin A. Org Lett 2013; 15:864-7. [DOI: 10.1021/ol303568f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Hiroyasu Yoshioka
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Takeo Kawabata
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
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Brahmachari G, Banerjee B. A Comparison Between Catalyst-Free and ZrOCl2⋅8H2O-Catalyzed Strecker Reactions for the Rapid and Solvent-Free One-Pot Synthesis of Racemic α-Aminonitrile Derivatives. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200055] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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