1
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Lee Y, Nam YS, Kim SY, Ki JE, Lee HG. Mechanistic duality of indolyl 1,3-heteroatom transposition. Chem Sci 2023; 14:7688-7698. [PMID: 37476715 PMCID: PMC10355096 DOI: 10.1039/d3sc00716b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/15/2023] [Indexed: 07/22/2023] Open
Abstract
A novel mechanistic duality has been revealed from the indolyl 1,3-heteroatom transposition (IHT) of N-hydroxyindole derivatives. A series of in-depth mechanistic investigations suggests that two separate mechanisms are operating simultaneously. Moreover, the relative contribution of each mechanistic pathway, the energy barrier for each pathway, and the identity of the primary pathway were shown to be the functions of the electronic properties of the substrate system. Based on the mechanistic understanding obtained, a mechanism-driven strategy for the general and efficient introduction of a heteroatom at the 3-position of indole has been developed. The reaction developed exhibits a broad substrate scope to provide the products in various forms of the functionalised indole. Moreover, the method is applicable to the introduction of both oxygen- and nitrogen-based functional groups.
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Affiliation(s)
- Yujin Lee
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Yun Seung Nam
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Soo Young Kim
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Jeong Eun Ki
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Hong Geun Lee
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
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2
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Fábian M, Novotná M, Raschmanová JŠ, Vargová K, Martinková M, Pilátová MB, Kešeľáková A. Divergent access to a novel 3,4-diaminophytosphingosine-like ceramide via sequential Overman rearrangement. Carbohydr Res 2023; 530:108874. [PMID: 37336150 DOI: 10.1016/j.carres.2023.108874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/11/2023] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
Abstract
A straightforward approach to a novel phytosphingosine-like ceramide has been accomplished. The cornerstone features of this divergent synthesis are a cascade Overman rearrangement of tris(imidate) to introduce three desired stereogenic centres via sequential chirality transfer and an effective olefin cross-metathesis to install a long side chain. The final unusual phytoceramides were evaluated for their capacity to inhibit the proliferation of cancer cell lines. The preliminary results revealed that compound 21 exhibits promising anticancer activity against HeLa and HCT-116 cells as well as the excellent selectivity in cytotoxicity (malignant vs non-malignant cell lines).
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Affiliation(s)
- Martin Fábian
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Michaela Novotná
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Jana Špaková Raschmanová
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Kristína Vargová
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Miroslava Martinková
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic.
| | - Martina Bago Pilátová
- Institute of Pharmacology, Faculty of Medicine, P.J. Šafárik University, SNP 1, 040 66, Košice, Slovak Republic
| | - Alexandra Kešeľáková
- Institute of Pharmacology, Faculty of Medicine, P.J. Šafárik University, SNP 1, 040 66, Košice, Slovak Republic
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3
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Liu R, Shen ML, Fan LF, Zhou XL, Wang PS, Gong LZ. Palladium-Catalyzed Branch- and Z-Selective Allylic C-H Amination with Aromatic Amines. Angew Chem Int Ed Engl 2023; 62:e202211631. [PMID: 36399016 DOI: 10.1002/anie.202211631] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/19/2022]
Abstract
Allylamines are important building blocks in the synthesis of bioactive compounds. The direct coupling of allylic C-H bonds and commonly available amines is a major synthetic challenge. An allylic C-H amination of 1,4-dienes has been accomplished by palladium catalysis. With aromatic amines, branch-selective allylic aminations are favored to generate thermodynamically unstable Z-allylamines. In addition, more basic aliphatic cyclic amines can also engage in the reaction, but linear dienyl allylic amines are the major products.
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Affiliation(s)
- Rui Liu
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Meng-Lan Shen
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Lian-Feng Fan
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Xiao-Le Zhou
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Pu-Sheng Wang
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Liu-Zhu Gong
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
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4
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Pratesi D, Mirabella S, Petrucci G, Matassini C, Faggi C, Cardona F, Goti A. Stereospecific Access to α‐ and β‐N‐Glycosylamine Derivatives by a Metal Free O‐to‐N [3,3]‐Sigmatropic Rearrangement. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Debora Pratesi
- Università degli Studi di Firenze: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 50019 Sesto Fiorentino ITALY
| | - Stefania Mirabella
- Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Giulia Petrucci
- Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Camilla Matassini
- Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Cristina Faggi
- Università degli Studi di Firenze: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Francesca Cardona
- Università degli Studi di Firenze: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 50019 Sesto Fiorentino ITALY
| | - Andrea Goti
- Universita' di Firenze Chemistry ""Ugo Schiff"" via della Lastruccia 13 I-50019 Sesto Fiorentino FI ITALY
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5
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Bou Zeid S, Eid S, Najjar F, Macé A, Rivilla I, Cossío FP, Dorcet V, Roisnel T, Carreaux F. Microwave‐Assisted 1,3‐Dioxa‐[3,3]‐Sigmatropic Rearrangement of Substituted Allylic Carbamates: Application to the Synthesis of Novel 1,3‐Oxazine‐2,4‐dione Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Samar Bou Zeid
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Samar Eid
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Fadia Najjar
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Aurélie Macé
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Ivan Rivilla
- Departamento de Química Orgánica I Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
- Ikerbasque Basque Fundation for Science 48009 Bilbao Spain
| | - Fernando P. Cossío
- Departamento de Química Orgánica I Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - François Carreaux
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
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6
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Zhuang H, Lu N, Ji N, Han F, Miao C. Bu
4
NHSO
4
‐Catalyzed Direct
N
‐Allylation of Pyrazole and its Derivatives with Allylic Alcohols in Water: A Metal‐Free, Recyclable and Sustainable System. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100864] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hongfeng Zhuang
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Nan Lu
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Na Ji
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Feng Han
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Chengxia Miao
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
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7
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Chai J, Nie Y, Wang Z, Cheng L, Liu YG, Wu J. Metal Free Access to Polysubstituted Pyrimidines via Nitrile Activation and [2+2+2] Cycloaddition. Chemistry 2021; 27:17565-17569. [PMID: 34626013 DOI: 10.1002/chem.202103219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Indexed: 11/08/2022]
Abstract
Tf2 O mediated intermolecular / intramolecular [2+2+2] cycloaddition between alkynes and nitriles has been developed for efficient construction of polysubstituted pyrimidines and bicyclopyrimidines. In presence of Tf2 O, aza-allene species were generated in situ through nitrile activation and subsequently participated in the [2+2+2] cycloaddition, which was fully supported by deuteration experiments. The reaction had good substrate extensibility with moderate to excellent yield including trimethylsilylalkynes. The method was utilized as a synthetic tool in the preparation of a luminescent metal complex.
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Affiliation(s)
- Jinkui Chai
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Yu Nie
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Zhao Wang
- Henan University of Animal Husbandry and Economy, Zhengzhou, 450001, P. R. China
| | - Li Cheng
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Ying-Guo Liu
- Division of Molecular Catalysis & Synthesis, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Junliang Wu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
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8
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Rao MLN, Islam SS. Rearrangement-Driven Molecular Diversity: Synthesis of Functionalized Pyrones, Orthoesters, and Xanthones from Spiroketals. Org Lett 2021; 23:8668-8672. [PMID: 34714091 DOI: 10.1021/acs.orglett.1c02888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of tricyclic 5,5-benzannulated spiroketals with trifluoroacetic acid (TFA) and AlCl3 furnished benzopyranobenzopyrans, benzofuro-orthoesters, and benzofuroxanthones. Whereas the reaction of tricyclic 5,5-benzannulated spiroketals with TFA produced the pyrones, the reaction with AlCl3 furnished densely functionalized orthoesters and xanthones. The formation of these products was rationalized by fascinating mechanistic pathways involving semipinacol/α-ketol molecular rearrangements.
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Affiliation(s)
- Maddali L N Rao
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sk Shamim Islam
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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9
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Kizhakkayil Mangadan AR, Liu J, Aponick A. Enantioselective Lactonization by π‐Acid‐Catalyzed Allylic Substitution: A Complement to π‐Allylmetal Chemistry. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Arun Raj Kizhakkayil Mangadan
- Florida Center for Heterocyclic Compounds and Department of Chemistry University of Florida P.O. Box 117200 Gainesville FL 32611 USA
| | - Ji Liu
- Florida Center for Heterocyclic Compounds and Department of Chemistry University of Florida P.O. Box 117200 Gainesville FL 32611 USA
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and Department of Chemistry University of Florida P.O. Box 117200 Gainesville FL 32611 USA
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10
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Kizhakkayil Mangadan AR, Liu J, Aponick A. Enantioselective Lactonization by π-Acid-Catalyzed Allylic Substitution: A Complement to π-Allylmetal Chemistry. Angew Chem Int Ed Engl 2021; 60:22224-22229. [PMID: 34423520 DOI: 10.1002/anie.202108336] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Indexed: 12/16/2022]
Abstract
Asymmetric allylic alkylation (AAA) is a powerful method for the formation of highly useful, non-racemic allylic compounds. Here we present a complementary enantioselective process that generates allylic lactones via π-acid catalysis. More specifically, a catalytic enantioselective dehydrative lactonization of allylic alcohols using a novel PdII -catalyst containing the imidazole-based P,N-ligand (S)-StackPhos is reported. The high-yielding reactions are operationally simple to perform with enantioselectivities up to 99 % ee. This strategy facilitates the replacement of a poor leaving group with what would ostensibly be a better leaving group in the product avoiding complications arising from racemization by equilibration.
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Affiliation(s)
- Arun Raj Kizhakkayil Mangadan
- Florida Center for Heterocyclic Compounds and, Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL, 32611, USA
| | - Ji Liu
- Florida Center for Heterocyclic Compounds and, Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL, 32611, USA
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and, Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL, 32611, USA
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11
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Tiwari VK, Powell DR, Broussy S, Berkowitz DB. Rapid Enantioselective and Diastereoconvergent Hybrid Organic/Biocatalytic Entry into the Oseltamivir Core. J Org Chem 2021; 86:6494-6503. [PMID: 33857378 DOI: 10.1021/acs.joc.1c00326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A formal synthesis of the antiviral drug (-)-oseltamivir (Tamiflu) has been accomplished starting from m-anisic acid via a dissolving metal or electrochemical Birch reduction. The correct absolute stereochemistry is efficiently set through enzyme-catalyzed carbonyl reduction on the resultant racemic α,β-unsaturated ketone. A screen of a broad ketoreductase (KRED) library identified several that deliver the desired allylic alcohol with nearly perfect facial selectivity at the new center for each antipodal substrate, indicating that the enzyme also is able to completely override inherent diastereomeric bias in the substrate. Conversion is complete, with d-glucose serving as the terminal hydride donor (glucose dehydrogenase). For each resulting diastereomeric secondary alcohol, O/N-interconversion is then efficiently effected either by synfacial [3,3]-sigmatropic allylic imidate rearrangement or by direct, stereoinverting N-Mitsunobu chemistry. Both stereochemical outcomes have been confirmed crystallographically. The α,β-unsaturation is then introduced via an α-phenylselenylation/oxidation/pyrolysis sequence to yield the targeted (S)-N-acyl-protected 5-amino-1,3-cyclohexadiene carboxylates, key advanced intermediates for oseltamivir pioneered by Corey (N-Boc) and Trost (N-phthalamido), respectively.
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Affiliation(s)
- Virendra K Tiwari
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Douglas R Powell
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Sylvain Broussy
- University of Paris, CiTCoM, 8038 CNRS, U 1268 INSERM, F-75006 Paris, France
| | - David B Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
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12
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Lee KR, Jung DJ, Ahn S, Kim JW, Lee SG. Catalyst-controlled divergent transformations of N-sulfonyl-1,2,3-triazoles into isoquinolin-3-ones and 2-aminoindanones. Org Biomol Chem 2021; 19:5093-5097. [PMID: 34037059 DOI: 10.1039/d1ob00708d] [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
Novel catalyst-controlled divergent intramolecular reactions of N-sulfonyl-1,2,3-triazoles with tethered-allylic alcohol have been developed. In the presence of the Pd(0) catalyst alone, 1-vinylated 1,4-dihydroisoquinolin-3-ones were formed, whereas 3-vinylated 2-aminoindanones were accessed under tandem, one-pot, Rh(ii)/Pd(0) dual catalytic conditions. Based on deuterium-labelling experiments and isolation of the intermediate, a plausible reaction mechanism has been proposed.
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Affiliation(s)
- Kyu Ree Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.
| | - Da Jung Jung
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.
| | - Subin Ahn
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.
| | - Ji Won Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.
| | - Sang-Gi Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.
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14
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Mirabella S, Petrucci G, Faggi C, Matassini C, Cardona F, Goti A. Allyl Cyanate/Isocyanate Rearrangement in Glycals: Stereoselective Synthesis of 1-Amino and Diamino Sugar Derivatives. Org Lett 2020; 22:9041-9046. [PMID: 33147974 PMCID: PMC7735751 DOI: 10.1021/acs.orglett.0c03438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The [3,3]-sigmatropic allyl cyanate/isocyanate rearrangement of glycals in the presence of O-, N-, and C-nucleophiles afforded β-N-glucosyl and galactosyl carbamates, ureas, and amides in good yields. The unsaturated products were elaborated to N-glycosides by dihydroxylation, to 1,3-diaminosugars by tethered aminohydroxylation, or to 1,2-diaminosugars by iteration of the sigmatropic rearrangement. This metal-free methodology represents an excellent and general method for the stereoselective synthesis of N-glycosides and diamino sugars with complete transmission of stereochemical information.
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Affiliation(s)
- Stefania Mirabella
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Giulia Petrucci
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Cristina Faggi
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Camilla Matassini
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Francesca Cardona
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Andrea Goti
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
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15
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Uphade MB, Prasad KR. Total synthesis of (+)-γ-lycorane from ethyl lactate using iterative Claisen and Overman rearrangement reactions. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Garbacz M, Stecko S. The Synthesis of Chiral Allyl Carbamates via Merger of Photoredox and Nickel Catalysis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Mateusz Garbacz
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw Poland
| | - Sebastian Stecko
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw Poland
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17
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Kondo Y, Morimoto H, Ohshima T. Recent Progress towards the Use of Benzophenone Imines as an Ammonia Equivalent. CHEM LETT 2020. [DOI: 10.1246/cl.200099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Yuta Kondo
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hiroyuki Morimoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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18
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Tjeng AA, Handore KL, Batey RA. Stereocontrolled Microwave-Assisted Domino [3,3]-Sigmatropic Reactions: A Winstein-Overman Rearrangement for the Formation of Differentiated Contiguous C-N Bonds. Org Lett 2020; 22:3050-3055. [PMID: 32223252 DOI: 10.1021/acs.orglett.0c00801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A domino [3,3]-sigmatropic rearrangement sequence employing a sequential reversible allylic azide rearrangement followed by an irreversible Overman reaction provides a new route to the formation of two contiguous C-N bonds. The reaction occurs in a stereocontrolled fashion in two steps from readily available alkenyl epoxides via initial azide anion ring opening of the epoxides.
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Affiliation(s)
- Andy A Tjeng
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Kishor L Handore
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Robert A Batey
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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19
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Jao TJ, Akula PS, Hong BC, Lee GH. Catalytic 1,2-Rearrangements: Organocatalyzed Michael/Semi-Pinacol-like Rearrangement Cascade of 1,3-Diones and Nitroolefins. Org Lett 2020; 22:62-67. [PMID: 31829018 DOI: 10.1021/acs.orglett.9b03912] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
New types of organocatalytic 1,2-rearrangements, which resemble the Smiles-like or semi-pinacol-like rearrangement, of Michael adducts of 1,3-dicarbonyl-2-alkyl compounds and nitroalkenes have been realized. Unlike the well-known conjugate addition, the reaction affords the 1-phenyl-1-nitroalkanes via unprecedented rearrangement and cascade reactions. Structures of the appropriate products were unambiguously characterized by X-ray crystallography.
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Affiliation(s)
- Tsung-Jung Jao
- Department of Chemistry and Biochemistry , National Chung Cheng University , Chia-Yi 621 , Taiwan, R.O.C
| | - Pavan Sudheer Akula
- Department of Chemistry and Biochemistry , National Chung Cheng University , Chia-Yi 621 , Taiwan, R.O.C
| | - Bor-Cherng Hong
- Department of Chemistry and Biochemistry , National Chung Cheng University , Chia-Yi 621 , Taiwan, R.O.C
| | - Gene-Hsiang Lee
- Instrumentation Center , National Taiwan University , Taipei 106 , Taiwan, R.O.C
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20
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Velasco-Rubio Á, Alexy EJ, Yoritate M, Wright AC, Stoltz BM. Stereospecific Overman Rearrangement of Substituted Cyclic Vinyl Bromides: Access to Fully Substituted α-Amino Ketones. Org Lett 2019; 21:8962-8965. [PMID: 31663754 DOI: 10.1021/acs.orglett.9b03347] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A versatile thermal Overman rearrangement of enantioenriched, cyclic allylic alcohols providing tertiary allylic amines has been developed. The vinyl bromide used to control enantioselectivity in a preceding CBS reduction is utilized as a synthetic handle for the preparation of tertiary α-amino ketones and related derivatives in an asymmetric fashion.
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Affiliation(s)
- Álvaro Velasco-Rubio
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Eric J Alexy
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Makoto Yoritate
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Austin C Wright
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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21
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Affiliation(s)
- Cheng-yi Chen
- Janssen R&D, API Small Molecule Development, Discovery Product Development & Supply, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Xiaowei Lu
- Porton (Shanghai) R&D Center, 1299 Ziyue Road, Zizhu Science Park, Minhang District, Shanghai 200241, China
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22
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Takeda N, Arisawa N, Miyamoto M, Kobori Y, Shinada T, Miyata O, Ueda M. Reagent-controlled regiodivergence in the [3,3]-sigmatropic rearrangement of N-(acyloxy)enamides. Org Chem Front 2019. [DOI: 10.1039/c9qo01109a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A regiodivergent [3,3]-sigmatropic rearrangement of N-(acyloxy)enamides based on the N–O bond cleavage is achieved by changing reaction conditions.
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Affiliation(s)
| | | | | | | | - Tetsuro Shinada
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University
- Kobe 658-858
- Japan
- Graduate School of Science
- Osaka City University
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23
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Liu C, Xu J, Ding L, Zhang H, Xue Y, Yang F. Au-Catalyzed tandem intermolecular hydroalkoxylation/Claisen rearrangement between allylic alcohols and chloroalkynes. Org Biomol Chem 2019; 17:4435-4439. [DOI: 10.1039/c9ob00151d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An efficient protocol for the synthesis of γ,δ-unsaturated α-chloroketones has been developed via Au-catalyzed tandem intermolecular hydroalkoxylation/Claisen rearrangement.
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Affiliation(s)
- Congrong Liu
- School of Environment Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Jin Xu
- Key Laboratory of Watershed Geographic Sciences
- Nanjing Institute of Geography and Limnology
- Chinese Academy of Sciences
- Nanjing
- China
| | - Lianghui Ding
- School of Environment Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Haiyun Zhang
- School of Environment Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Yunbo Xue
- School of Environment Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Fulai Yang
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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24
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Thakur R, Jaiswal Y, Kumar A. Imidates: an emerging synthon for N-heterocycles. Org Biomol Chem 2019; 17:9829-9843. [DOI: 10.1039/c9ob01899a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights the recent application of imidates as building blocks for the synthesis of saturated and un-saturated N-heterocycles via C–N annulation reactions under acid/base/metal-catalyzed/radical-mediated reaction conditions.
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Affiliation(s)
- Rima Thakur
- Department of Chemistry
- National Institute of Technology
- Patna
- India
| | - Yogesh Jaiswal
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta
- India
| | - Amit Kumar
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta
- India
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25
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Agirre M, Henrion S, Rivilla I, Miranda JI, Cossío FP, Carboni B, Villalgordo JM, Carreaux F. 1,3-Dioxa-[3,3]-sigmatropic Oxo-Rearrangement of Substituted Allylic Carbamates: Scope and Mechanistic Studies. J Org Chem 2018; 83:14861-14881. [PMID: 30457341 DOI: 10.1021/acs.joc.8b01320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An unexpected 1,3-dioxa-[3,3]-sigmatropic rearrangement during the treatment of aryl- and alkenyl-substituted allylic alcohols with activated isocyanates is reported. The reorganization of bonds is highly dependent on the electron density of the aromatic ring and the nature of isocyanate used. This metal-free tandem reaction from branched allyl alcohols initiated by a carbamoylation reaction and followed by a sigmatropic rearrangement thus offers a new access to ( E)-cinnamyl and conjugated ( E, E)-diene carbamates, such as N-acyl and N-sulfonyl derivatives. A computational study was conducted in order to rationalize this phenomenon, and a rearrangement progress kinetic analysis was performed.
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Affiliation(s)
- Maddalen Agirre
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) , P° Manuel Lardizabal 3 , 20018 San Sebastián/Donostia , Spain
| | - Sylvain Henrion
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 , 263, avenue du Général Leclerc, Campus de Beaulieu , F-35000 Rennes , France
| | - Ivan Rivilla
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) , P° Manuel Lardizabal 3 , 20018 San Sebastián/Donostia , Spain
| | - José I Miranda
- SGIker NMR Facility , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Avda. Tolosa 72 , E-20018 San Sebastián/Donostia , Spain
| | - Fernando P Cossío
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) , P° Manuel Lardizabal 3 , 20018 San Sebastián/Donostia , Spain
| | - Bertrand Carboni
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 , 263, avenue du Général Leclerc, Campus de Beaulieu , F-35000 Rennes , France
| | - José M Villalgordo
- VillaPharma Research, Parque Tecnológico de Fuente Alamo , Ctra. El Estrecho-Lobosillo, Av. Azul , 30320 Murcia , Spain
| | - François Carreaux
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 , 263, avenue du Général Leclerc, Campus de Beaulieu , F-35000 Rennes , France
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26
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Kim SW, Schwartz LA, Zbieg JR, Stivala CE, Krische MJ. Regio- and Enantioselective Iridium-Catalyzed Amination of Racemic Branched Alkyl-Substituted Allylic Acetates with Primary and Secondary Aromatic and Heteroaromatic Amines. J Am Chem Soc 2018; 141:671-676. [PMID: 30571092 DOI: 10.1021/jacs.8b12152] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The air- and water-stable π-allyliridium C,O-benzoate modified by ( S)-tol-BINAP, ( S)-Ir-II, catalyzes highly regio- and enantioselective Tsuji-Trost-type aminations of racemic branched alkyl-substituted allylic acetates using primary or secondary (hetero)aromatic amines. Specifically, in the presence of ( S)-Ir-II (5 mol%) in DME solvent at 60-70 °C, α-methyl allyl acetate 1a (100 mol%) reacts with primary (hetero)aromatic amines 2a-2l (200 mol%) or secondary (hetero)aromatic amines 3a-3l (200 mol%) to form the branched products of allylic amination 4a-4l and 5a-5l, respectively, as single regioisomers in good to excellent yield with uniformly high levels of enantioselectivity. As illustrated by the conversion of heteroaromatic amine 3m to adducts 6a-6g, excellent levels of regio- and enantioselectivity are retained across diverse branched allylic acetates bearing normal alkyl or secondary alkyl substituents. For reactants 3n-3p, which incorporate both primary and secondary aryl amine moieties, regio- and enantioselective amination occurs with complete site-selectivity to furnish adducts 7a-7c. Mechanistic studies involving amination of the enantiomerically enriched, deuterium-labeled acetate 1h corroborate C-N bond formation via outer-sphere addition.
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Affiliation(s)
- Seung Wook Kim
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Leyah A Schwartz
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Jason R Zbieg
- Discovery Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Craig E Stivala
- Discovery Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Michael J Krische
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
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27
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Raschmanová JŠ, Martinková M, Gonda J, Pilátová MB, Kupka D, Jáger D. Synthesis of the cytotoxic phytosphingosines and their isomeric analogues. Carbohydr Res 2018; 468:1-12. [DOI: 10.1016/j.carres.2018.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/03/2018] [Accepted: 08/03/2018] [Indexed: 01/26/2023]
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29
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A stereoselective approach towards a small library of cytotoxic isomeric sphingoid bases. Carbohydr Res 2018; 468:51-63. [DOI: 10.1016/j.carres.2018.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/13/2018] [Accepted: 08/13/2018] [Indexed: 11/21/2022]
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30
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Abstract
The first catalytic strategy to harness imidate radicals has been developed. This approach enables alkene difunctionalization of allyl alcohols by photocatalytic reduction of their oxime imidates. The ensuing imidate radicals undergo consecutive intra- and intermolecular reactions to afford (i) hydroamination, (ii) aminoalkylation, or (iii) aminoarylation, via three distinct radical mechanisms. The broad scope and utility of this catalytic method for imidate radical reactivity is presented, along with comparisons to other N-centered radicals and complementary, closed-shell imidate pathways.
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Affiliation(s)
- Kohki M Nakafuku
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Stacy C Fosu
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - David A Nagib
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
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31
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Sugai T, Usui S, Tsuzaki S, Oishi H, Yasushima D, Hisada S, Fukuyasu T, Oishi T, Sato T, Chida N. Synthesis of β-Hydroxy-α,α-disubstituted Amino Acids through the Orthoamide-Type Overman Rearrangement of an α,β-Unsaturated Ester and Stereodivergent Intramolecular SN2′ Reaction: Development and Application to the Total Synthesis of Sphingofungin F. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tomoya Sugai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shunme Usui
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shun Tsuzaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Hiroki Oishi
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Daichi Yasushima
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shoko Hisada
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takahiro Fukuyasu
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takeshi Oishi
- School of Medicine, Keio University, 4-1-1 Hiyoshi, Kohoku-ku, Yokohama 223-8521, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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32
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Sugai T, Okuyama Y, Shin J, Usui S, Hisada S, Osanai R, Oishi T, Sato T, Chida N. Synthesis of Kaitocephalin Facilitated by Three Stereoselective Allylic Transposition Reactions. CHEM LETT 2018. [DOI: 10.1246/cl.171226] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomoya Sugai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Yuya Okuyama
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Jaehyun Shin
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Shunme Usui
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Shoko Hisada
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Ryosuke Osanai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takeshi Oishi
- School of Medicine, Keio University, 4-1-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8521, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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33
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Tashenov Y, Daniels M, Robeyns K, Van Meervelt L, Dehaen W, Suleimen YM, Szakonyi Z. Stereoselective Syntheses and Application of Chiral Bi- and Tridentate Ligands Derived from (+)-Sabinol. Molecules 2018; 23:molecules23040771. [PMID: 29584708 PMCID: PMC6017647 DOI: 10.3390/molecules23040771] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/16/2022] Open
Abstract
A library of bidentate diols, as well as tridentate triols and aminodiols, derived from (+)-sabinol, was synthesized in a stereoselective manner. Sabinol was transformed into allylic trichloroacetamide via Overman rearrangement of the corresponding trichloroacetimidate. After changing the protecting group to Boc, the enamine was subjected to stereospecific dihydroxylation with OsO4/NMO, resulting in the (1R,2R,3R,5R)-aminodiol diastereomer. The obtained primary aminodiol was transformed to a secondary analogue. The ring closure of the N-benzyl-substituted aminodiol with formaldehyde was investigated and regioselective formation of the spiro-oxazolidine ring was observed. Hydroboration or dihydroxylation of sabinol or its benzyl ether with OsO4/NMO resulted in the formation of sabinane-based diols and triols following a highly stereospecific reaction. Treatment of sabinol with m-CPBA afforded O-benzoyl triol as a diastereoisomer of the directly dihydroxylated product, instead of the expected epoxy alcohol. The resulting aminodiols, diol, and triols were applied as chiral catalysts in the reaction of diethylzinc and benzaldehyde from moderate to good selectivity.
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Affiliation(s)
- Yerbolat Tashenov
- Institute of Applied Chemistry, Chemistry Department of L.N. Gumilyov Eurasian National University, Munaitpassov st., 5, 010008 Astana, Kazakhstan.
| | - Mathias Daniels
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Koen Robeyns
- IMCN, Molecules Solids and Reactivity division (MOST), Université catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| | - Luc Van Meervelt
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Wim Dehaen
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Yerlan M Suleimen
- Institute of Applied Chemistry, Chemistry Department of L.N. Gumilyov Eurasian National University, Munaitpassov st., 5, 010008 Astana, Kazakhstan.
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
- Interdisciplinary Centre of Natural Products, University of Szeged, H 6720 Szeged, Hungary.
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34
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Meza AT, Wurm T, Smith L, Kim SW, Zbieg JR, Stivala CE, Krische MJ. Amphiphilic π-Allyliridium C,O-Benzoates Enable Regio- and Enantioselective Amination of Branched Allylic Acetates Bearing Linear Alkyl Groups. J Am Chem Soc 2018; 140:1275-1279. [PMID: 29350523 PMCID: PMC6262838 DOI: 10.1021/jacs.7b13482] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The first examples of amphiphilic reactivity in the context of enantioselective catalysis are described. Commercially available π-allyliridium C,O-benzoates, which are stable to air, water and SiO2 chromatography, and are well-known to catalyze allyl acetate-mediated carbonyl allylation, are now shown to catalyze highly chemo-, regio- and enantioselective substitutions of branched allylic acetates bearing linear alkyl groups with primary amines.
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Affiliation(s)
- Arismel Tena Meza
- Discovery Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas Wurm
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Lewis Smith
- Discovery Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Seung Wook Kim
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Jason R Zbieg
- Discovery Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Craig E Stivala
- Discovery Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
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35
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Martinez-Alsina LA, Murray JC, Buzon LM, Bundesmann MW, Young JM, O'Neill BT. Spiropiperidine Sultam and Lactam Templates: Diastereoselective Overman Rearrangement and Metathesis followed by NH Arylation. J Org Chem 2017; 82:12246-12256. [PMID: 29096057 DOI: 10.1021/acs.joc.7b02096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report the diastereoselective synthesis of novel spiropiperidine templates for use in SAR studies of β-secretase (BACE) inhibitors and also as versatile ligands for other receptor types. The overall synthetic approach stems from chiral starting material benzyl (S)-2-methyl-4-oxopiperidine-1-carboxylate and employs an Overman rearrangement to control the stereochemistry at the quaternary center. This process is followed by a Grubbs metathesis to close a five-membered "top" ring to form an α,β-unsaturated lactam or an α,β-unsaturated sultam. We also demonstrate that this chemistry can accommodate additional substituents on the lactam/sultam ring and allows late stage sequential functionalization of the amine and amide nitrogens to rapidly produce diverse analogues.
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Affiliation(s)
- Luis A Martinez-Alsina
- Medicine Design, Medicinal Chemistry, Pfizer Worldwide Research and Development , 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - John C Murray
- Medicine Design, Medicinal Chemistry, Pfizer Worldwide Research and Development , 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Leanne M Buzon
- Medicine Design, Medicinal Chemistry, Pfizer Worldwide Research and Development , 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Mark W Bundesmann
- Medicine Design, Medicinal Chemistry, Pfizer Worldwide Research and Development , 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Joseph M Young
- Novartis Institute for BioMedical Research , 5300 Chiron Way, Emeryville, California 94608-2916, United States
| | - Brian T O'Neill
- Medicine Design, Medicinal Chemistry, Pfizer Worldwide Research and Development , 445 Eastern Point Road, Groton, Connecticut 06340, United States
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Jacková D, Martinková M, Gonda J, Stanková K, Bago Pilátová M, Herich P, Kožíšek J. The convergent synthesis and anticancer activity of broussonetinines related analogues. Carbohydr Res 2017; 451:59-71. [PMID: 28965067 DOI: 10.1016/j.carres.2017.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 11/25/2022]
Abstract
The convergent synthesis of broussonetinines related congeners 3 and 4 with the simple C13 alkyl side chain and differently configured pyrrolidine skeleton has been achieved. Our approach relied on the [3,3]-sigmatropic rearrangements of chiral allylic substrates derived from d-xylose. Cross metathesis of the common oxazolidinone intermediates 7 and 8 with tridec-1-ene followed by alkylative cyclization completed the construction of both C-alkyl iminosugars. The targeted compounds 3 and 4 were screened for antiproliferative/cytotoxic activities against multiple cancer cell lines by MTT assay. Compound 3 exhibited very good in vitro potency on Caco-2 and Jurkat cell lines with IC50 value of 5.1 μM and 5.8 μM, respectively.
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Affiliation(s)
- Dominika Jacková
- Institute of Chemical Sciences, Department of Organic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic
| | - Miroslava Martinková
- Institute of Chemical Sciences, Department of Organic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic.
| | - Jozef Gonda
- Institute of Chemical Sciences, Department of Organic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic
| | - Kvetoslava Stanková
- Institute of Chemical Sciences, Department of Organic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic
| | - Martina Bago Pilátová
- Institute of Pharmacology, Faculty of Medicine, P.J. Šafárik University, SNP 1, 040 66 Košice, Slovak Republic
| | - Peter Herich
- Institute of Physical Chemistry and Chemical Physics, Department of Physical Chemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovak Republic; Central Laboratories, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovak Republic
| | - Jozef Kožíšek
- Institute of Physical Chemistry and Chemical Physics, Department of Physical Chemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovak Republic
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Zhou B, Li L, Liu X, Tan TD, Liu J, Ye LW. Yttrium-Catalyzed Tandem Intermolecular Hydroalkoxylation/Claisen Rearrangement. J Org Chem 2017; 82:10149-10157. [DOI: 10.1021/acs.joc.7b01612] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bo Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces & Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Long Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces & Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces & Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces & Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jinxian Liu
- College of Chemistry & Materials Science, Longyan University, Fujian 364000, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces & Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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