1
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Barron B, Edge C, Fenner S, Shrives H, Sollis S, Whiting M, Valette D. A Concise Enantioselective Synthesis of Fluorinated Pyrazolo-Piperidine GSK3901383A Enabled by an Organocatalytic Aza-Michael Addition. Org Lett 2024; 26:1533-1538. [PMID: 38363757 DOI: 10.1021/acs.orglett.3c03694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
A highly enantioselective organocatalytic aza-Michael addition of 4-nitro-pyrazole to ethyl (E)-2,2-difluoro-5-oxopent-3-enoate has been developed. This reaction enabled a concise, four-step, stereoselective synthesis of highly functionalized 3,3-difluoro-4-pyrazolo-piperidine GSK3901383A, a key intermediate for the synthesis of a leucine-rich repeat kinase 2 inhibitor API. Computational analysis provided insight into the steric requirements of the catalytic system, enabling rational selection of a highly selective catalyst.
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Affiliation(s)
- Benedict Barron
- Drug Substance Development, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Colin Edge
- Computational Chemistry, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Sabine Fenner
- Drug Substance Development, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Harry Shrives
- Medicinal Chemistry, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Steven Sollis
- Medicinal Chemistry, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Matthew Whiting
- Drug Substance Development, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Damien Valette
- Drug Substance Development, GSK, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
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2
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Sahoo J, Panda J, Giri S, Sahoo G. Concept-Driven Chemoselective O/N-Derivatization of Prolinol: A Bee-Line Approach to Access Organocatalysts. J Org Chem 2023. [PMID: 37402179 DOI: 10.1021/acs.joc.3c00992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
An investigation into the sensitivity of reaction conditions to a highly utilized protocol has been reported, wherein the mono-Boc functionalization of prolinol could be controlled for the exclusive synthesis of either N-Boc, O-Boc, or oxazolidinone derivatives. Mechanistic investigation revealed that the elementary steps could possibly be controlled by (a) a requisite base to recognize the differently acidic sites (NH and OH) for the formation of the conjugate base, which reacts with the electrophile, and (b) the difference in nucleophilicity of the conjugate basic sites. Herein, a successful chemoselective functionalization of the nucleophilic sites of prolinol by employing a suitable base is reported. This has been achieved by exploiting the relative acidity difference of NH and OH along with the reversed nucleophilicity of the corresponding conjugate bases N- and O-. This protocol has also been used for the synthesis of several O-functionalized prolinol derived organocatalysts, few of which have been newly reported.
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Affiliation(s)
- Jigyansa Sahoo
- Organocatalysis and Synthesis Laboratory, Department of Chemistry, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Jeetendra Panda
- Organocatalysis and Synthesis Laboratory, Department of Chemistry, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Santanab Giri
- School of Applied Science and Humanities, Haldia Institute of Technology, Haldia 721657, West Bengal, India
| | - Gokarneswar Sahoo
- Organocatalysis and Synthesis Laboratory, Department of Chemistry, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
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3
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He H, Shen X, Ding X, Antilla JC. Enantioselective Mukaiyama-Michael Reaction of β,γ-Unsaturated α-Keto Esters with Silyl Ketene Acetals Catalyzed by a Chiral Magnesium Phosphate. Org Lett 2023; 25:782-787. [PMID: 36700837 DOI: 10.1021/acs.orglett.2c04277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We would like to describe an efficient and highly enantioselective Mukaiyama-Michael reaction of silyl ketene acetals with β,γ-unsaturated α-keto esters catalyzed by a chiral magnesium BINOL-derived phosphate. The resulting functionalized 1,5-dicarbonyl adducts are obtained in high yields (up to 96%) and with excellent enantioselectivities (up to 98%) under mild conditions. Two plausible mechanistic pathways were proposed, including a 1,4-addition and a hetero Diels-Alder [4 + 2] cycloaddition.
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Affiliation(s)
- Hualing He
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province 310018, P. R. China
| | - Xizhe Shen
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province 310018, P. R. China
| | - Xinying Ding
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province 310018, P. R. China
| | - Jon C Antilla
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province 310018, P. R. China
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4
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Hu ZX, Zhang P, Zou JB, An Q, Yi P, Yuan CM, Zhang ZK, Zhao LH, Hao XJ. Quinolizidine Alkaloids with Antitomato Spotted Wilt Virus and Insecticidal Activities from the Seeds of Thermopsis lanceolata R. Br. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9214-9226. [PMID: 35849433 DOI: 10.1021/acs.jafc.2c02546] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
As part of our ongoing investigation of pesticide active quinolizidine alkaloids (QAs) from the family Fabaceae, the chemical constituents of the seeds of Thermopsis lanceolata R. Br. were systematically investigated. Bioassay-guided fractionation and purification of the crude extract led to the isolation of seventeen new QAs (1-17), including three new naturally occurring compounds (15-17), along with 15 known compounds (18-32). Their structures were elucidated by comprehensive spectroscopic data analysis (IR, UV, NMR, and HRESIMS) and quantum chemistry calculations (13C NMR and ECD). The antitomato spotted wilt virus activities and insecticidal activities against Aphis fabae, Nilaparvata lugens (Stal), and Tetranychus urticae of compounds 1-32 were screened using the lesion counting method, spray method, and rice-stem dipping method, respectively. Biological tests indicated that compounds 6, 9, 10, and 18 displayed significant anti-TSWV activities compared with the positive control ningnanmycin. Compounds 3, 4, and 5 showed better insecticidal activities against A. fabae with LC50 values of 10.07, 12.07, and 6.56 mg/L, respectively. Moreover, compounds 5, 18, and 24 exhibited moderate insecticidal activities against N. lugens (Stal) with LC50 values of 37.91, 53.44, and 31.21 mg/L, respectively. Furthermore, compounds 9 and 10 exhibited moderate insecticidal activities against T. urticae.
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Affiliation(s)
- Zhan-Xing Hu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China
| | - Peng Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Ji-Bin Zou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China
| | - Qiao An
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China
| | - Ping Yi
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China
| | - Chun-Mao Yuan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China
| | - Zhong-Kai Zhang
- The Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650204, China
| | - Li-Hua Zhao
- The Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650204, China
| | - Xiao-Jiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China
- Research Unit of Chemical Biology of Natural Anti-Virus Products, Chinese Academy of Medical Sciences, Kunming 650201, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China
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5
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Sansinenea E, Ortiz A. Asymmetric Organocatalytic Syntheses of Bioactive Compounds. Curr Org Synth 2022; 19:148-165. [DOI: 10.2174/1570179418666210728145206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/10/2021] [Accepted: 06/25/2021] [Indexed: 11/22/2022]
Abstract
Background:
The total syntheses of complex natural products have evolved to include new methodologies to save time, simplifying the form to achieve these natural compounds.
Objective:
In this review, we have described the asymmetric synthesis of different natural products and biologically active compounds of the last ten years until the current day.
Results:
An asymmetric organocatalytic reaction is a key to generate stereoselectively the main structure with the required stereochemistry.
Conclusion:
Even more remarkable, the organocatalytic cascade reactions, which are carried out with high stereoselectivity, as well as a possible approximation of the organocatalysts activation with sub-strates are also described.
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Affiliation(s)
- Estibaliz Sansinenea
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Aurelio Ortiz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, México
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6
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Weng Z, Zhou Y, Yue X, Jiang F, Guo W. Regioselective α-addition of vinylogous α-ketoester enolate in organocatalytic asymmetric Michael reactions: enantioselective synthesis of Rauhut–Currier type products. RSC Adv 2022; 12:32056-32060. [DOI: 10.1039/d2ra06416b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
Catalytic asymmetric α-regioselective Michael additions of vinylogous α-ketoester enolate are described herein.
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Affiliation(s)
- Zhibing Weng
- School of Chemical and Pharmaceutical Engineering, Changzhou Vocational Institute of Engineering, Changzhou, China
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| | - Ying Zhou
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Xin Yue
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Feng Jiang
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Wengang Guo
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
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7
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Dočekal V, Vopálenská A, Měrka P, Konečná K, Jand'ourek O, Pour M, Císařová I, Veselý J. Enantioselective Construction of Spirooxindole-Fused Cyclopentanes. J Org Chem 2021; 86:12623-12643. [PMID: 34283607 DOI: 10.1021/acs.joc.1c01116] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present study reports an asymmetric organocatalytic cascade reaction of oxindole derivates with α,β-unsaturated aldehydes efficiently catalyzed by simple chiral secondary amine. Spirooxindole-fused cyclopentanes were produced in excellent isolated yields (up to 98%) with excellent enantiopurities (up to 99% ee) and moderate to high diastereoselectivities. The synthetic utility of the protocol was exemplified on a set of additional transformations of the corresponding spiro compounds. In addition, a study showing the promising biological activity of selected enantioenriched products was accomplished.
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Affiliation(s)
- Vojtěch Dočekal
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Andrea Vopálenská
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Pavel Měrka
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Klára Konečná
- Department of Biological and Medical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Ondřej Jand'ourek
- Department of Biological and Medical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Milan Pour
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
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8
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Li L, El Khoury A, Clement BO, Harran PG. Re-visiting the diastereoselectivity of organocatalytic conjugate addition of 2-trimethylsiloxyfuran to trans-crotonaldehyde. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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9
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Yorimitsu H, Ozaki T, Kaga A, Saito H. Generation of Aryllithium Reagents from N-Arylpyrroles Using Lithium. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1482-2567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AbstractTreatment of 1-aryl-2,5-diphenylpyrroles with lithium powder in tetrahydrofuran at 0 °C results in the generation of the corresponding aryllithium reagents through reductive C–N bond cleavage.
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10
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Water plays a crucial role: Small molecule catalyzed C–C/C–X bond forming reactions using organosilicon reagents under “wet” conditions. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131254] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Kortet S, Claraz A, Pihko PM. Catalytic Enantioselective Total Synthesis of (+)-Lycoperdic Acid. Org Lett 2020; 22:3010-3013. [PMID: 32216321 DOI: 10.1021/acs.orglett.0c00772] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A concise enantio- and stereocontrolled synthesis of (+)-lycoperdic acid is presented. The stereochemical control is based on iminium-catalyzed Mukaiyama-Michael reaction and enamine-catalyzed organocatalytic α-chlorination steps. The amino group was introduced by azide displacement, affording the final stereochemistry of (+)-lycoperdic acid. Penultimate hydrogenation and hydrolysis afforded pure (+)-lycoperdic acid in seven steps from a known silyloxyfuran.
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Affiliation(s)
- Sami Kortet
- Department of Chemistry and NanoScience Center, University of Jyväskylä, Survontie 9B, 40520 Jyväskylä, Finland
| | - Aurélie Claraz
- Department of Chemistry and NanoScience Center, University of Jyväskylä, Survontie 9B, 40520 Jyväskylä, Finland
| | - Petri M Pihko
- Department of Chemistry and NanoScience Center, University of Jyväskylä, Survontie 9B, 40520 Jyväskylä, Finland
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12
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Curti C, Battistini L, Sartori A, Zanardi F. New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems. Chem Rev 2020; 120:2448-2612. [PMID: 32040305 PMCID: PMC7993750 DOI: 10.1021/acs.chemrev.9b00481] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/19/2022]
Abstract
The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.
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Affiliation(s)
| | | | | | - Franca Zanardi
- Dipartimento di Scienze degli
Alimenti e del Farmaco, Università
di Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
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13
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Reed CW, Lindsley CW. A general, enantioselective synthesis of 2-substituted thiomorpholines and thiomorpholine 1,1-dioxides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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14
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Richardson MSW, Tame CJ, Poole DL, Donohoe TJ. Rhodium-catalysed vinyl 1,4-conjugate addition coupled with Sharpless asymmetric dihydroxylation in the synthesis of the CDE ring fragment of pectenotoxin-4. Chem Sci 2019; 10:6336-6340. [PMID: 31341588 PMCID: PMC6601420 DOI: 10.1039/c9sc01761e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/17/2019] [Indexed: 11/21/2022] Open
Abstract
Rhodium and osmium catalysed C–C and C–O bond formation under mild conditions.
Our synthesis of the CDE ring fragment of pectenotoxin-4 utilised two key steps to make the complex bicyclic ketal unit: (i) a rhodium-catalysed vinyl group 1,4-addition as the major C–C bond forming step; (ii) a stereoselective Sharpless Asymmetric Dihydroxylation (SAD) of the resulting 1,1-disubstituted homoallylic alcohol. Subsequent acid-catalysed cyclisation afforded the desired [5,6]-bicyclic ketal of the target molecule. This methodology was shown to be compatible with the desired E ring fragment 35 in order to construct the CDE fragment 37 of pectenotoxin-4.
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Affiliation(s)
- Melodie S W Richardson
- Department of Chemistry , University of Oxford , Chemistry Research Laboratory , Mansfield Road , Oxford , OX1 3TA , UK .
| | - Christopher J Tame
- GlaxoSmithKline Medicines Research Centre , Gunnels Wood Road , Stevenage , SG1 2NY , UK
| | - Darren L Poole
- GlaxoSmithKline Medicines Research Centre , Gunnels Wood Road , Stevenage , SG1 2NY , UK
| | - Timothy J Donohoe
- Department of Chemistry , University of Oxford , Chemistry Research Laboratory , Mansfield Road , Oxford , OX1 3TA , UK .
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15
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Gu Q, Wang X, Sun B, Lin G. Grob-Fragmentation-Enabled Approach to Clavulactone Analogues. Org Lett 2019; 21:5082-5085. [PMID: 31199157 DOI: 10.1021/acs.orglett.9b01678] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel synthetic strategy for dolabellane skeleton was realized, which allowed the synthesis of clavulactone analogues 26 and 27 in a concise and efficient manner. Salient transformations include a diastereoselective Mukaiyama aldol reaction, an intramolecular nucleophilic addition reaction, a Grob fragmentation reaction, and an efficient Mukaiyama-Michael addition reaction.
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Affiliation(s)
- Qi Gu
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road , Shanghai 200032 , China
| | - Xuan Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road , Shanghai 200032 , China
| | - Bingfeng Sun
- Taizhou Synhigher Pharmaceutical Technology Co. Ltd. , 1 Yaocheng Avenue , Taizhou , Jiangsu 225300 , China
| | - Guoqiang Lin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road , Shanghai 200032 , China
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16
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Skrzyńska A, Frankowski S, Moczulski M, Drelich P, Albrecht Ł. Site-Selective and Enantioselective α,β,γ-Functionalization of 5-Alkylidenefuran-2(5 H)-ones: A Route to Polycyclic γ-Lactones. Org Lett 2019; 21:1248-1252. [PMID: 30746947 DOI: 10.1021/acs.orglett.8b03796] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new strategy for a direct α,β,γ-functionalization of the γ-lactone framework in the corresponding 5-alkylidenefuran-2(5 H)-ones is reported. The developed approach is based on a stereocontrolled cascade reaction with 2-mercaptocarbonyl compounds proceeding in a sequence of thia-Michael/aldol/oxa-Michael reactions. Such a synthetic strategy allows for a construction of a unique polycyclic architecture containing γ-lactone, tetrahydrofuran, and tetrahydrothiophene ring systems. Excellent enantioselectivities and diastereoselectivities have been obtained in the presence of bifunctional catalyst derived from cinchona alkaloids.
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Affiliation(s)
- Anna Skrzyńska
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Sebastian Frankowski
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Marek Moczulski
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Piotr Drelich
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
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17
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Skrzyńska A, Drelich P, Frankowski S, Albrecht Ł. Synthesis of γ,γ-Disubstituted Butenolides through a Doubly Vinylogous Organocatalytic Cycloaddition. Chemistry 2018; 24:16543-16547. [DOI: 10.1002/chem.201804650] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Anna Skrzyńska
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
| | - Piotr Drelich
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
| | - Sebastian Frankowski
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
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18
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Häggman NO, Zank B, Jun H, Kaldre D, Gleason JL. Diazepane Carboxylates as Organocatalysts in the Diels-Alder Reaction of α-Substituted Enals. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Nicklas O. Häggman
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Benjamin Zank
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - HyunJune Jun
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Dainis Kaldre
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
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19
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Frías M, Cieślik W, Fraile A, Rosado-Abón A, Garrido-Castro AF, Yuste F, Alemán J. Development and Application of Asymmetric Organocatalytic Mukaiyama and Vinylogous Mukaiyama-Type Reactions. Chemistry 2018; 24:10906-10933. [DOI: 10.1002/chem.201801866] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Indexed: 02/02/2023]
Affiliation(s)
- María Frías
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7; Cantoblanco 28049 Madrid Spain
| | - Wioleta Cieślik
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7; Cantoblanco 28049 Madrid Spain
| | - Alberto Fraile
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7; Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Anielka Rosado-Abón
- Instituto de Química; Universidad Nacional Autónoma de México; Circuito Exterior, Cd. Universitaria, Coyoacán 04510 México D.F. México
| | - Alberto F. Garrido-Castro
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7; Cantoblanco 28049 Madrid Spain
| | - Francisco Yuste
- Instituto de Química; Universidad Nacional Autónoma de México; Circuito Exterior, Cd. Universitaria, Coyoacán 04510 México D.F. México
| | - José Alemán
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7; Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Universidad Autónoma de Madrid; 28049 Madrid Spain
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20
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Harned AM. From determination of enantiopurity to the construction of complex molecules: The Horeau principle and its application in synthesis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.056] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Cai S, Wang S, Wei D, Niu H, Wang W, Bai X. Multifunctional polyamides containing pyrrole unit with different triarylamine units owning electrochromic, electrofluorochromic and photoelectron conversion properties. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.01.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Li Z, Hu B, Wu Y, Fei C, Deng L. Control of chemoselectivity in asymmetric tandem reactions: Direct synthesis of chiral amines bearing nonadjacent stereocenters. Proc Natl Acad Sci U S A 2018; 115:1730-1735. [PMID: 29432161 PMCID: PMC5828615 DOI: 10.1073/pnas.1718474115] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
This paper describes the mechanistic insight-guided development of a catalyst system, employing a phenolic proton donor catalyst in addition to a cinchonium-derived phase-transfer catalyst, to control the chemoselectivity of two distinct intermediates, thereby enabling the desired asymmetric tandem conjugate addition-protonation pathway to dominate over a number of side-reaction pathways to provide a synthetic approach for the direct generation of optically active amines bearing two nonadjacent stereocenters.
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Affiliation(s)
- Zhe Li
- Department of Chemistry, Brandeis University, Waltham, MA 02454-9110
| | - Bin Hu
- Department of Chemistry, Brandeis University, Waltham, MA 02454-9110
| | - Yongwei Wu
- Department of Chemistry, Brandeis University, Waltham, MA 02454-9110
| | - Chao Fei
- Department of Chemistry, Brandeis University, Waltham, MA 02454-9110
| | - Li Deng
- Department of Chemistry, Brandeis University, Waltham, MA 02454-9110
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23
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Li Q, Zhao K, Peuronen A, Rissanen K, Enders D, Tang Y. Enantioselective Total Syntheses of (+)-Hippolachnin A, (+)-Gracilioether A, (−)-Gracilioether E, and (−)-Gracilioether F. J Am Chem Soc 2018; 140:1937-1944. [PMID: 29314833 DOI: 10.1021/jacs.7b12903] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Qingong Li
- The School of Pharmaceutical Sciences & The Comprehensive AIDS Research Center, Tsinghua University, Beijing 100084, China
| | - Kun Zhao
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Anssi Peuronen
- Department
of Chemistry, Nanoscience Center, University of Jyvaskyla, 40014 JYU Jyväskylä, Finland
| | - Kari Rissanen
- Department
of Chemistry, Nanoscience Center, University of Jyvaskyla, 40014 JYU Jyväskylä, Finland
| | - Dieter Enders
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Yefeng Tang
- The School of Pharmaceutical Sciences & The Comprehensive AIDS Research Center, Tsinghua University, Beijing 100084, China
- Collaborative
Innovation Center for Biotherapy, State Key Laboratory of Biotherapy
and Cancer Center, West China Medical School, Sichuan University, Chengdu 610041, China
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24
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Lima CGS, Monteiro JL, de Melo Lima T, Weber Paixão M, Corrêa AG. Angelica Lactones: From Biomass-Derived Platform Chemicals to Value-Added Products. CHEMSUSCHEM 2018; 11:25-47. [PMID: 28834397 DOI: 10.1002/cssc.201701469] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Indexed: 06/07/2023]
Abstract
The upgrading of biomass-derived compounds has arisen in recent years as a very promising research field in both academia and industry. In this sense, a lot of new processes and products have been developed, often involving levulinic acid as a starting material or intermediate. In the last few years, though, other scaffolds have been receiving growing attention, especially, angelica lactones. Considering these facts and the emergent applications of said molecules, in this review we will discuss their preparation and applications; the use of these frameworks as starting materials in organic synthesis to produce potential bioactive compounds will be covered, as will their use as a foundation to highly regarded compounds such as liquid alkanes with prospective use as fuels and polymers.
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Affiliation(s)
- Carolina G S Lima
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos-UFSCar, Via Washington Luís, km 235-SP-310, São Carlos, São Paulo, 13565-905, Brazil
| | - Julia L Monteiro
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos-UFSCar, Via Washington Luís, km 235-SP-310, São Carlos, São Paulo, 13565-905, Brazil
| | - Thiago de Melo Lima
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos-UFSCar, Via Washington Luís, km 235-SP-310, São Carlos, São Paulo, 13565-905, Brazil
| | - Marcio Weber Paixão
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos-UFSCar, Via Washington Luís, km 235-SP-310, São Carlos, São Paulo, 13565-905, Brazil
| | - Arlene G Corrêa
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos-UFSCar, Via Washington Luís, km 235-SP-310, São Carlos, São Paulo, 13565-905, Brazil
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25
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O'Rourke NF, A M, Higgs HN, Eastman A, Micalizio GC. Function-Oriented Studies Targeting Pectenotoxin 2: Synthesis of the GH-Ring System and a Structurally Simplified Macrolactone. Org Lett 2017; 19:5154-5157. [PMID: 28901150 PMCID: PMC5633828 DOI: 10.1021/acs.orglett.7b02435] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A chemical
foundation for function-oriented studies of pectenotoxin
2 (PTX2) is described. A synthesis of the bicyclic GH-system, and
the design and synthesis of a PTX2-analogue, is presented. While maintaining
critical features for actin binding, and lacking the Achilles’
heel for the natural product’s anticancer activity (the AB-spiroketal),
this first-generation analogue did not possess the anticancer properties
of PTX2, an observation that indicates the molecular significance
of features present in the natural product’s CDEF-tetracycle.
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Affiliation(s)
- Natasha F O'Rourke
- Department of Chemistry, Dartmouth College, Burke Laboratory , Hanover, New Hampshire 03755, United States
| | - Mu A
- Geisel School of Medicine, Dartmouth College , Hanover, New Hampshire 03755, United States
| | - Henry N Higgs
- Geisel School of Medicine, Dartmouth College , Hanover, New Hampshire 03755, United States
| | - Alan Eastman
- Geisel School of Medicine, Dartmouth College , Hanover, New Hampshire 03755, United States
| | - Glenn C Micalizio
- Department of Chemistry, Dartmouth College, Burke Laboratory , Hanover, New Hampshire 03755, United States
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26
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Abstract
γ-Butenolides, γ-butyrolactones, and derivatives, especially in enantiomerically pure form, constitute the structural core of numerous natural products which display an impressive range of biological activities which are important for the development of novel physiological and therapeutic agents. Furthermore, optically active γ-butenolides and γ-butyrolactones serve also as a prominent class of chiral building blocks for the synthesis of diverse biological active compounds and complex molecules. Taking into account the varying biological activity profiles and wide-ranging structural diversity of the optically active γ-butenolide or γ-butyrolactone structure, the development of asymmetric synthetic strategies for assembling such challenging scaffolds has attracted major attention from synthetic chemists in the past decade. This review offers an overview of the different enantioselective synthesis of γ-butenolides and γ-butyrolactones which employ catalytic amounts of metal complexes or organocatalysts, with emphasis focused on the mechanistic issues that account for the observed stereocontrol of the representative reactions, as well as practical applications and synthetic potentials.
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Affiliation(s)
- Bin Mao
- Stratingh Institute for Chemistry, University of Groningen , Nijenborg 4, 9747 AG Groningen, The Netherlands.,National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology , Hangzhou 310014, P. R. China
| | - Martín Fañanás-Mastral
- Stratingh Institute for Chemistry, University of Groningen , Nijenborg 4, 9747 AG Groningen, The Netherlands.,Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela , Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen , Nijenborg 4, 9747 AG Groningen, The Netherlands
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27
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Brindani N, Mena P, Calani L, Benzie I, Choi SW, Brighenti F, Zanardi F, Curti C, Del Rio D. Synthetic and analytical strategies for the quantification of phenyl-γ-valerolactone conjugated metabolites in human urine. Mol Nutr Food Res 2017; 61. [DOI: 10.1002/mnfr.201700077] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Nicoletta Brindani
- Human Nutrition Unit; Department of Food & Drug; University of Parma; Parma Italy
- Department of Food & Drug; University of Parma; Parma Italy
| | - Pedro Mena
- Human Nutrition Unit; Department of Food & Drug; University of Parma; Parma Italy
| | - Luca Calani
- Human Nutrition Unit; Department of Food & Drug; University of Parma; Parma Italy
| | - Iris Benzie
- The Department of Health Technology and Informatics; Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong
| | - Siu-Wai Choi
- The Department of Health Technology and Informatics; Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong
| | - Furio Brighenti
- Human Nutrition Unit; Department of Food & Drug; University of Parma; Parma Italy
| | - Franca Zanardi
- Department of Food & Drug; University of Parma; Parma Italy
| | - Claudio Curti
- Department of Food & Drug; University of Parma; Parma Italy
| | - Daniele Del Rio
- Human Nutrition Unit; Department of Food & Drug; University of Parma; Parma Italy
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28
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Neumeyer M, Kopp J, Brückner R. Controlling the Substitution Pattern of Hexasubstituted Naphthalenes by Aryne/Siloxyfuran Diels-Alder Additions: Regio- and Stereocontrolled Synthesis of Arizonin C1 Analogs. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700195] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Markus Neumeyer
- Institut für Organische Chemie; Albert-Ludwigs-Universität; Albertstraße 21 79104 Freiburg Germany
| | - Julia Kopp
- Institut für Organische Chemie; Albert-Ludwigs-Universität; Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie; Albert-Ludwigs-Universität; Albertstraße 21 79104 Freiburg Germany
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29
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Larnaud F, Sulpizi A, Häggman NO, Hughes JME, Dewez DF, Gleason JL. Organocatalytic Michael Addition of Indoles to α-Substituted Enals by Using a Diazepane Carboxylate Catalyst. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700469] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Florent Larnaud
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Adamo Sulpizi
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Nicklas O. Häggman
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Jonathan M. E. Hughes
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Damien F. Dewez
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
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30
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Neumeyer M, Brückner R. Establishing Consensus Stereostructures for the Naphthoquinonopyrano-γ-lactone Natural Products (-)-Arizonin B1 and (-)-Arizonin C1 by Total Syntheses. Diastereocontrol of Oxa-Pictet-Spengler Cyclizations by Protective-Group Optimization. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Markus Neumeyer
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
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31
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Kaldre D, Gleason JL. An Organocatalytic Cope Rearrangement. Angew Chem Int Ed Engl 2016; 55:11557-61. [PMID: 27529777 DOI: 10.1002/anie.201606480] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Indexed: 11/10/2022]
Abstract
The first example of an organocatalytic Cope rearrangement is reported. Acyclic and cyclic acyl hydrazides catalyze the rearrangement of 1,5-hexadiene-2-carboxaldehydes via iminium ion formation. A correlation between ring size and catalyst activity was observed for the cyclic hydrazides, with seven- and eight-membered-ring catalysts being the most active. Diazepane carboxylate 5 c (10 mol %) catalyzed the rearrangement of a range of dienes at room temperature in acetonitrile using triflic acid as a co-catalyst. Preliminary proof of principle for asymmetric catalysis was provided by rearrangement of 3,3-dimethyl-7-phenyl-1,5-heptadiene-2-carboxaldehyde in the presence of a novel 7-substituted diazepane carboxylate.
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Affiliation(s)
- Dainis Kaldre
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC, H3A 0B8, Canada
| | - James L Gleason
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC, H3A 0B8, Canada.
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32
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Affiliation(s)
- Dainis Kaldre
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
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33
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Iriarte I, Vera S, Badiola E, Mielgo A, Oiarbide M, García JM, Odriozola JM, Palomo C. Asymmetric Assembly of All-Carbon Tertiary/Quaternary Nonadjacent Stereocenters through Organocatalytic Conjugate Addition of α-Cyanoacetates to a Methacrylate Equivalent. Chemistry 2016; 22:13690-6. [DOI: 10.1002/chem.201603082] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Igor Iriarte
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Eider Badiola
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Jesús M. García
- Departamento de Química Aplicada; Universidad Pública de Navarra; 31006 Pamplona Spain
| | - José M. Odriozola
- Departamento de Química Aplicada; Universidad Pública de Navarra; 31006 Pamplona Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
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34
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Durantie E, Huwiler S, Leroux JC, Castagner B. A Chiral Phosphoramidite Reagent for the Synthesis of Inositol Phosphates. Org Lett 2016; 18:3162-5. [DOI: 10.1021/acs.orglett.6b01374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Estelle Durantie
- Department of Chemistry and
Applied Biosciences, ETH-Zürich, 8093 Zürich, Switzerland
| | - Samuel Huwiler
- Department of Chemistry and
Applied Biosciences, ETH-Zürich, 8093 Zürich, Switzerland
| | | | - Bastien Castagner
- Department of Chemistry and
Applied Biosciences, ETH-Zürich, 8093 Zürich, Switzerland
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35
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Wang Y, Li Z, Lv L, Xie Z. Synthetic Study of Rubriflordilactone B: Highly Stereoselective Construction of the C-5-epi ABCDE Ring System. Org Lett 2016; 18:792-5. [DOI: 10.1021/acs.orglett.6b00057] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yong Wang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhongle Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Liangbo Lv
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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36
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Zhou Z, Qu L, Yang T, Wen J, Zhang Y, Chi Z, Liu S, Chen X, Xu J. Nonvolatile electrical switching behavior and mechanism of functional polyimides bearing a pyrrole unit: influence of different side groups. RSC Adv 2016. [DOI: 10.1039/c6ra11615a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Influence of side groups to the nonvolatile electrical switching behaviors and its mechanism of polyimides bearing pyrrole unit were systematically studied.
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Affiliation(s)
- Zhuxin Zhou
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Lunjun Qu
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Tingting Yang
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Jinglan Wen
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Yi Zhang
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Zhenguo Chi
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Siwei Liu
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Xudong Chen
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
| | - Jiarui Xu
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Chemistry and Chemical Engineering
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37
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Asymmetric intramolecular α-cyclopropanation of aldehydes using a donor/acceptor carbene mimetic. Nat Commun 2015; 6:10041. [PMID: 26644194 PMCID: PMC4686670 DOI: 10.1038/ncomms10041] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 10/26/2015] [Indexed: 01/12/2023] Open
Abstract
Enantioselective α-alkylation of carbonyl is considered as one of the most important processes for asymmetric synthesis. Common alkylation agents, that is, alkyl halides, are notorious substrates for both Lewis acids and organocatalysts. Recently, olefins emerged as a benign alkylating species via photo/radical mechanisms. However, examples of enantioselective alkylation of aldehydes/ketones are scarce and direct asymmetric dialkylation remains elusive. Here we report an intramolecular α-cyclopropanation reaction of olefinic aldehydes to form chiral cyclopropane aldehydes. We demonstrate that an α-iodo aldehyde can function as a donor/acceptor carbene equivalent, which engages in a formal [2+1] annulation with a tethered double bond. Privileged bicyclo[3.1.0]hexane-type scaffolds are prepared in good optical purity using a chiral amine. The synthetic utility of the products is demonstrated by versatile transformations of the bridgehead formyl functionality. We expect the concept of using α-iodo iminium as a donor/acceptor carbene surrogate will find wide applications in chemical reaction development. The formation of chiral centres adjacent to carbonyl groups is a highly challenging task in asymmetric catalysis. Here, the authors report the asymmetric diakylation of carbonyls via an intramolceular α-cyclopropanation procedure.
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38
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Claraz A, Sahoo G, Berta D, Madarász Á, Pápai I, Pihko PM. A Catalyst Designed for the Enantioselective Construction of Methyl- and Alkyl-Substituted Tertiary Stereocenters. Angew Chem Int Ed Engl 2015; 55:669-73. [DOI: 10.1002/anie.201509302] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Indexed: 12/26/2022]
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39
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Claraz A, Sahoo G, Berta D, Madarász Á, Pápai I, Pihko PM. A Catalyst Designed for the Enantioselective Construction of Methyl- and Alkyl-Substituted Tertiary Stereocenters. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Li TZ, Xie J, Jiang Y, Sha F, Wu XY. Enantioselective Vinylogous Michael/Cyclization Cascade Reaction of Acyclic β,γ-Unsaturated Amides with Isatylidene Malononitriles: Asymmetric Construction of Spirocyclic Oxindoles. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500469] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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41
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Donslund BS, Monleón A, Larsen J, Ibsen L, Jørgensen KA. The stereoselective formation of highly substituted CF3-dihydropyrans as versatile building blocks. Chem Commun (Camb) 2015. [PMID: 26225818 DOI: 10.1039/c5cc04874e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The highly enantioselective dienamine-mediated formation of 5-bromo-6-(trifluoromethyl)-3,4-dihydro-2H-pyrans from α,β-unsaturated aldehydes and α-bromo-(trifluoromethyl)-enones employing a C2-symmetric aminocatalyst is described. The products are demonstrated to be applicable in coupling reactions directly onto the ring, thereby granting access to a broad scope of highly substituted 6-(trifluoromethyl)-dihydropyran compounds.
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Affiliation(s)
- Bjarke S Donslund
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark.
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Kouridaki A, Sofiadis M, Montagnon T, Vassilikogiannakis G. Pectenotoxin's ABCDE Ring System: A Complex Target to Test the Potential of Singlet Oxygen Super Cascades as Tools for Synthesis. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Li X, Peng S, Li L, Huang Y. Synthesis of tetrasubstituted 1-silyloxy-3-aminobutadienes and chemistry beyond Diels-Alder reactions. Nat Commun 2015; 6:6913. [PMID: 25898310 PMCID: PMC4411301 DOI: 10.1038/ncomms7913] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 03/12/2015] [Indexed: 01/20/2023] Open
Abstract
Electron-rich dienes have revolutionized the synthesis of complex compounds since the discovery of the legendary Diels–Alder cycloaddition reaction. This highly efficient bond-forming process has served as a fundamental strategy to assemble many structurally formidable molecules. Amino silyloxy butadienes are arguably the most reactive diene species that are isolable and bottleable. Since the pioneering discovery by Rawal, 1-amino-3-silyloxybutadienes have been found to undergo cycloaddition reactions with unparalleled mildness, leading to significant advances in both asymmetric catalysis and total synthesis of biologically active natural products. In sharp contrast, this class of highly electron-rich conjugated olefins has not been studied in non-cycloaddition reactions. Here we report a simple synthesis of tetrasubstituted 1-silyloxy-3-aminobutadienes, a complementarily substituted Rawal's diene. This family of molecules is found to undergo a series of intriguing chemical transformations orthogonal to cycloaddition reactions. Structurally diverse polysubstituted ring architectures are established in one step from these dienes. Electron-rich dienes have been shown to have multiple uses in synthesis by means of cycloaddition reactions. Here, the authors report a series of non-cycloaddition-based reactions of these compounds, giving access to 4-, 5-, 6- and 7-membered ring systems.
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Affiliation(s)
- Xijian Li
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Siyu Peng
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Li Li
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Yong Huang
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
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Steinkamp AD, Frings M, Thomé I, Schiffers I, Bolm C. Asymmetric Copper-Catalyzed Vinylogous Mukaiyama Michael Addition of Cyclic Dienol Silanes to Unsaturated α-Keto Phosphonates. Chemistry 2015; 21:7705-8. [DOI: 10.1002/chem.201500861] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Indexed: 11/07/2022]
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Senter TJ, O'Reilly MC, Chong KM, Sulikowski GA, Lindsley CW. A general, enantioselective synthesis of N-alkyl terminal aziridines and C2-functionalized azetidines via organocatalysis. Tetrahedron Lett 2015; 56:1276-1279. [PMID: 26834294 PMCID: PMC4730893 DOI: 10.1016/j.tetlet.2015.01.140] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A short, high-yielding protocol involving the enantioselective α-chlorination of aldehydes has been developed for the enantioselective synthesis of C2-functionalized aziridines and N-alkyl terminal azetidines from a common intermediate. This methodology allows for the rapid preparation of functionalized aziridines in 50–73% overall yields and 88–94% ee, and azetidines in 22–32% overall yields and 84–92% ee. Moreover, we developed a scalable and cost-effective route to the key organocatalyst (54% overall yield, >95% dr).
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Affiliation(s)
- Timothy J Senter
- Department of Chemistry, Vanderbitl Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Matthew C O'Reilly
- Department of Chemistry, Vanderbitl Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Katherine M Chong
- Department of Chemistry, Vanderbitl Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Gary A Sulikowski
- Department of Chemistry, Vanderbitl Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Craig W Lindsley
- Department of Chemistry, Vanderbitl Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37232, USA; Department of Pharmacology, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, TN, 37232, USA
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Matos Paz B, Jiang H, Jørgensen KA. Aminocatalysis: Beyond Steric Shielding and Hydrogen-Bonding. Chemistry 2014; 21:1846-53. [DOI: 10.1002/chem.201405038] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Erdmann H, An F, Mayer P, Ofial AR, Lakhdar S, Mayr H. Structures and Reactivities of 2-Trityl- and 2-(Triphenylsilyl)pyrrolidine-Derived Enamines: Evidence for Negative Hyperconjugation with the Trityl Group. J Am Chem Soc 2014; 136:14263-9. [DOI: 10.1021/ja508065e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hannes Erdmann
- Department
Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
| | - Feng An
- Department
Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
| | - Peter Mayer
- Department
Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
| | - Armin R. Ofial
- Department
Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
| | - Sami Lakhdar
- Department
Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
- Laboratoire
de Chimie Moléculaire et Thio-organique, UMR CNRS 6507, 6 Boulevard
Maréchal Juin, 14050 Caen, France
| | - Herbert Mayr
- Department
Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
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Kemppainen EK, Sahoo G, Piisola A, Hamza A, Kótai B, Pápai I, Pihko PM. Mukaiyama-Michael Reactions withtrans-2,5-Diarylpyrrolidine Catalysts: Enantioselectivity Arises from Attractive Noncovalent Interactions, Not from Steric Hindrance. Chemistry 2014; 20:5983-93. [DOI: 10.1002/chem.201304240] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Indexed: 11/12/2022]
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49
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Jusseau X, Chabaud L, Guillou C. Synthesis of γ-butenolides and α,β-unsaturated γ-butyrolactams by addition of vinylogous nucleophiles to Michael acceptors. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.057] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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50
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