1
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Fan YM, George J, Wang JYJ, Gardiner MG, Coote ML, Sherburn MS. A Rapid Aza-Bicycle Synthesis from Dendralenes and Imines. Org Lett 2023; 25:7545-7550. [PMID: 37801309 DOI: 10.1021/acs.orglett.3c02890] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The diene-transmissive 2-fold Diels-Alder sequence between carbon-based dienophiles and [3]dendralenes is becoming an established method for polycarbocycle synthesis. Here, we demonstrate for the first time that imines are competent participants in intermolecular formal [4 + 2] cycloadditions with dendralenes. After a second Diels-Alder process with a carbadienophile, hexahydro- and octahydro-isoquinoline structures are formed. The formal aza-Diels-Alder reaction, which requires Lewis acid promotion, proceeds in high regio- and stereoselectivity under optimized conditions. ωB97XD/Def2-TZVP//M06-2X/6-31+G(d,p) calculations reveal a stepwise ionic mechanism for the formal aza-dienophile cycloadditions and also explain an unexpected Z → E olefin isomerization of a non-reacting C═C bond in the first formal cycloaddition.
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Affiliation(s)
- Yi-Min Fan
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Josemon George
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Jiao Yu J Wang
- Institute for Nanoscale Science & Technology, Flinders University, Sturt Road, Bedford Park, South Australia 5042, Australia
| | - Michael G Gardiner
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Michelle L Coote
- Institute for Nanoscale Science & Technology, Flinders University, Sturt Road, Bedford Park, South Australia 5042, Australia
| | - Michael S Sherburn
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
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2
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Yang D, Zhu M, Wang T, He Y, Xie L, Zhang J, Cheng B. Catalyst-free inverse-electron-demand aza-Diels-Alder reaction of 4,4-dicyano-2-methylenebut-3-enoates and 1,3,5-triazinanes: access to polysubstituted tetrahydropyridines. Org Biomol Chem 2023. [PMID: 37334910 DOI: 10.1039/d3ob00511a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
An inverse-electron-demand aza-Diels-Alder reaction between 4,4-dicyano-2-methylenebut-3-enoates and 1,3,5-triazinanes under catalyst-free and additive-free conditions was developed, which provided a highly convenient and straightforward method to construct a series of polyfunctionalized tetrahydropyridines in high yields. This strategy features numerous advantages, including high efficiency, good functional group tolerance, broad substrate scope, and environmentally friendly conditions.
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Affiliation(s)
- Dezhi Yang
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China.
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Meng Zhu
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China.
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Taimin Wang
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Yixuan He
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Lang Xie
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China.
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Jiayong Zhang
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Bin Cheng
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China.
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China.
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3
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Li Z, Wang Q, Wang K, Zhang W, Ye M. An antibody-free enrichment approach enabled by reductive glutaraldehydation for monomethyllysine proteome analysis. Proteomics 2023; 23:e2100378. [PMID: 35532377 DOI: 10.1002/pmic.202100378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/14/2022] [Accepted: 05/03/2022] [Indexed: 11/06/2022]
Abstract
Protein lysine monomethylation is an important post-translational modification participated in regulating many biological processes. There is growing interest in identifying these methylation events. However, the introduction of one methyl group on lysine residues has negligible effect on changing the physical and chemical properties of proteins or peptides, making enriching and identifying monomethylated lysine (Kme1) proteins or peptides extraordinarily challenging. In this study, we proposed an antibody-free chemical proteomics approach to capture Kme1 peptides from complex protein digest. By exploiting reductive glutaraldehydation, 5-aldehyde-pentanyl modified Kme1 residues and piperidine modified primary amines were generated at the same time. The peptides with aldehyde modified Kme1 residues were then enriched by solid-phase hydrazide chemistry. This chemical proteomics approach was validated by using several synthetic peptides. It was demonstrated that it can enrich and detect Kme1 peptide from peptide mixture containing 5000-fold more bovine serum albumin tryptic digest. Besides, we extended our approach to profile Kme1 using heavy methyl stable isotope labeling by amino acids in cell culture (hmSILAC) labeled Jurkat T cells and Hela cells. Totally, 29 Kme1 sites on 25 proteins were identified with high confidence and 11 Kme1 sites were identified in both two types cells. This is the first antibody-free chemical proteomics approach to enrich Kme1 peptides from complex protein digest, and it provides a potential avenue for the analysis of methylome.
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Affiliation(s)
- Zhouxian Li
- Shanghai Key Laboratory of Functional Materials Chemistry, Department of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China.,Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, China
| | - Qi Wang
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, China
| | - Keyun Wang
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, Department of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Mingliang Ye
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, China
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4
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He CQ, Lam CC, Yu P, Song Z, Chen M, Lam YH, Chen S, Houk KN. Catalytic Effects of Ammonium and Sulfonium Salts and External Electric Fields on Aza-Diels–Alder Reactions. J Org Chem 2019; 85:2618-2625. [DOI: 10.1021/acs.joc.9b03446] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cyndi Qixin He
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Ching Ching Lam
- Department of Chemistry, Imperial College London, London SW7 2AZ, U.K
| | - Peiyuan Yu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Zhihui Song
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Maggie Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Yu-hong Lam
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Shuming Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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5
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Nazeri MT, Javanbakht S, Shaabani A, Khavasi HR. Chemo‐ and Diastereoselective Synthesis of Pyrazolo‐tetrahydropyridines
via
Multicomponent Sequential Aza‐Diels‐Alder Reactions in Water. ChemistrySelect 2019. [DOI: 10.1002/slct.201904172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | - Siamak Javanbakht
- Faculty of ChemistryShahid Beheshti University G.C. P.O. Box 19396–4716 Tehran Iran
| | - Ahmad Shaabani
- Faculty of ChemistryShahid Beheshti University G.C. P.O. Box 19396–4716 Tehran Iran
| | - Hamid Reza Khavasi
- Faculty of ChemistryShahid Beheshti University G.C. P.O. Box 19396–4716 Tehran Iran
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6
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Yu S, de Bruijn HM, Svatunek D, Hamlin TA, Bickelhaupt FM. Factors Controlling the Diels-Alder Reactivity of Hetero-1,3-Butadienes. ChemistryOpen 2018; 7:995-1004. [PMID: 30524925 PMCID: PMC6276106 DOI: 10.1002/open.201800193] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Indexed: 12/29/2022] Open
Abstract
We have quantum chemically explored the Diels-Alder reactivities of a systematic series of hetero-1,3-butadienes with ethylene by using density functional theory at the BP86/TZ2P level. Activation strain analyses provided physical insight into the factors controlling the relative cycloaddition reactivity of aza- and oxa-1,3-butadienes. We find that dienes with a terminal heteroatom, such as 2-propen-1-imine (NCCC) or acrolein (OCCC), are less reactive than the archetypal 1,3-butadiene (CCCC), primarily owing to weaker orbital interactions between the more electronegative heteroatoms with ethylene. Thus, the addition of a second heteroatom at the other terminal position (NCCN and OCCO) further reduces the reactivity. However, the introduction of a nitrogen atom in the backbone (CNCC) leads to enhanced reactivity, owing to less Pauli repulsion resulting from polarization of the diene HOMO in CNCC towards the nitrogen atom and away from the terminal carbon atom. The Diels-Alder reactions of ethenyl-diazene (NNCC) and 1,3-diaza-butadiene (NCNC), which contain heteroatoms at both the terminal and backbone positions, are much more reactive due to less activation strain compared to CCCC.
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Affiliation(s)
- Song Yu
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Hans M de Bruijn
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Leiden Institute of Chemistry, Gorlaeus Laboratories Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Dennis Svatunek
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institut für Angewandte Synthesechemie Technische Universität Wien (TU Wien) Getreidemarkt 9 1060 Vienna Austria
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - F Matthias Bickelhaupt
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institute for Molecules and Materials (IMM) Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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7
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Zaim Ö, Tüzün NŞ, Çevik B, Özcan H, Boz E. Synthesis, reactions and DFT study of tropolone N,N-dimethylthiocarbamate. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Theoretical study of the mechanism of highly diastereoselective formation of a strained 3-azabicyclo[3.2.0]heptane derivative. J Mol Model 2015; 21:86. [PMID: 25773701 DOI: 10.1007/s00894-015-2636-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 02/22/2015] [Indexed: 10/23/2022]
Abstract
The mechanism of multicomponent reactions, especially stereoselective ones is of special importance in organic synthesis. The mechanism of diastereoselective formation of a highly strained 3-azabicyclo[3.2.0]heptane derivative through a catalyst-free multistep reaction is studied by DFT calculations in solution phase. The calculations on the two proposed mechanisms (pathways A and B) showed that the iminium ion, the relatively high energy species is not the approprite reaction intermediate. On the other hand, the lower activation energy of pathway B, as compared to that of pathway A, makes it as the preferred mechanism. The high stereoselectivity of the stepwise reaction may be attributed to the fact that the rate limiting and stereodifferentiating steps are the same. These findings may also account the formation of by-product in the experimental observations.
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9
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Gas-phase cleavage of the novel iminium ions [R1CH+NCHR2↔R1CHN+CHR2]: An experimental and computational study. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.10.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Zhang Y, Zhu Y, Zheng L, Zhuo LG, Yang F, Dang Q, Yu ZX, Bai X. On-Demand Selection of the Reaction Path from Imino Diels-Alder to Ene-Type Cyclization: Synthesis of Epiminopyrimido[4,5-b]azepines. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Cleary L, Mak VW, Rychnovsky SD, Shea KJ, Sizemore N. Origins of regio- and stereochemistry in type 2 intramolecular N-acylnitroso Diels-Alder reactions: a computational study of tether length and substituent effects. J Org Chem 2013; 78:4090-8. [PMID: 23477601 DOI: 10.1021/jo4004025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Quantum mechanical calculations have been used to investigate type 2 intramolecular N-acylnitroso Diels-Alder reactions. Experimentally observed regioselectivities and diastereoselectivities of these reactions have been reproduced using B3LYP/6-31+G(d) DFT calculations. The factors that govern selectivity (i.e., tether length, tether substitution and diene substitution) were systematically investigated. Tethers less than 6 carbon atoms lead to 1,3-regioisomers due to conformational restrictions. Substituents on the tether lead to diastereoselective outcomes dictated by transannular interactions in the transition states. The modest diastereoselectivity of diene-substituted substrates is rationalized as arising from reduction of eclipsing interactions in the flattened diene transition states. This method should prove valuable for planning syntheses involving type 2 intramolecular Diels-Alder reactions.
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Affiliation(s)
- Leah Cleary
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
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12
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Dieckmann A, Breugst M, Houk KN. Zwitterions and unobserved intermediates in organocatalytic Diels-Alder reactions of linear and cross-conjugated trienamines. J Am Chem Soc 2013; 135:3237-42. [PMID: 23350816 DOI: 10.1021/ja312043g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Diels-Alder reactions of cyclic linear and cross-conjugated trienamines with oxindoles have been studied with density functional theory [M06-2X/def2-TZVPP/IEFPCM//B97D/6-31+G(d,p)/IEFPCM]. These reactions are found to proceed in a stepwise fashion. Computations revealed that these transformations involve complex mechanisms including zwitterionic intermediates and several unstable alternate cycloadducts arising from (2 + 2) cycloadditions and hetero-Diels-Alder reactions. The observed regio- and stereochemistry can be rationalized by a combination of kinetic and thermodynamic control.
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Affiliation(s)
- Arne Dieckmann
- Department of Chemistry and Biochemistry, University of California-Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095-1569, USA
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13
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Memeo MG, Quadrelli P. Iminium Ions as Dienophiles in Aza-Diels-Alder Reactions: A Closer Look. Chemistry 2012; 18:12554-82. [DOI: 10.1002/chem.201201894] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Initial reactions of methyl-nitramine confined inside armchair (5,5) single-walled carbon nanotube. J Mol Model 2011; 17:2751-8. [DOI: 10.1007/s00894-011-0967-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 01/10/2011] [Indexed: 10/18/2022]
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15
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Yang F, Zheng L, Xiang J, Dang Q, Bai X. Synthesis of Hexahydrobenzo[b]pyrimido[4,5-h][1,6]naphthyridines via an Intramolecular Hetero-Diels−Alder Reaction. ACTA ACUST UNITED AC 2010; 12:476-81. [DOI: 10.1021/cc100018b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Fengzhi Yang
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Lianyou Zheng
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
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16
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Tam NT, Jung EJ, Cho CG. Intramolecular Imino Diels−Alder Approach to the Synthesis of the Aspidosperma Alkaloid from 3,5-Dibromo-2-pyrone. Org Lett 2010; 12:2012-4. [DOI: 10.1021/ol100489z] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nguyen Thanh Tam
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Eun-Ju Jung
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Cheon-Gyu Cho
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
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17
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Liang Y, Jiang X, Yu ZX. Mechanisms of Cascade Reactions in the Syntheses of Camptothecin-Family Alkaloids: Intramolecular [4+ + 2] Reactions of N-Arylimidates and Alkynes. Org Lett 2009; 11:5302-5. [DOI: 10.1021/ol902260a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yong Liang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Xing Jiang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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18
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O'Connor PD, Kim UB, Brimble MA. Synthesis of (±) Wine Lactone and Its Analogues by a Diels-Alder Approach. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900486] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Domingo LR, Pérez-Ruiz R, Argüello JE, Miranda MA. DFT Study on the Molecular Mechanism of the [4 + 2] Cycloaddition between Thiobenzophenone and Arylalkenes via Radical Cations. J Phys Chem A 2009; 113:5718-22. [DOI: 10.1021/jp900486e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luis R. Domingo
- Departamento de Química Orgánica, Universidad de Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain, Departamento de Química, Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, and INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Raúl Pérez-Ruiz
- Departamento de Química Orgánica, Universidad de Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain, Departamento de Química, Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, and INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Juan E. Argüello
- Departamento de Química Orgánica, Universidad de Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain, Departamento de Química, Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, and INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Miguel A. Miranda
- Departamento de Química Orgánica, Universidad de Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain, Departamento de Química, Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, and INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
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20
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Chang SH, Tsai WR, Ma HW, Lin YC, Huang SL, Liu YH, Wang Y. Intramolecular Diels−Alder Reactions in Ruthenium Vinylidene Complexes Containing Anthracenyl Groups. Organometallics 2009. [DOI: 10.1021/om8011294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shu-Hao Chang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Wen-Ru Tsai
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Hao-Wei Ma
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Ying-Chih Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Shou-Ling Huang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Yu Wang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
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21
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Lam YH, Cheong PHY, Blasco Mata JM, Stanway SJ, Gouverneur V, Houk KN. Diels-Alder exo selectivity in terminal-substituted dienes and dienophiles: experimental discoveries and computational explanations. J Am Chem Soc 2009; 131:1947-57. [PMID: 19154113 PMCID: PMC2635921 DOI: 10.1021/ja8079548] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Diels-Alder reactions of a series of silyloxydienes and silylated dienes with acyclic alpha,beta-unsaturated ketones and N-acyloxazolidinones have been investigated. The endo/exo stereochemical outcome is strongly influenced by the substitution pattern of the reactants. High exo selectivity was observed when the termini of the diene and the dienophile involved in the shorter of the forming bonds were both substituted, while the normal endo preference was found otherwise. The exo-selective asymmetric Diels-Alder reactions using Evans' oxazolidinone chiral auxiliary furnished a high level of pi-facial selectivity in the same sense as their well-documented endo-selective counterparts. Computational results for these Diels-Alder reactions were consistent with the experimental endo/exo selectivity in most cases. A twist-asynchronous model accounts for the geometries and energies of the computed transition structures.
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Affiliation(s)
- Yu-hong Lam
- Chemistry Research Laboratory, University of Oxford, UK
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