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Soysal EN, Fındık V, Dedeoglu B, Aviyente V, Tantillo DJ. Theoretical Investigation of the Biogenetic Pathway for Formation of Antibacterial Indole Alkaloids from Voacanga africana. ACS OMEGA 2022; 7:31591-31596. [PMID: 36092585 PMCID: PMC9453972 DOI: 10.1021/acsomega.2c04591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
The energetic viability of the previously proposed biogenetic pathway for the formation of two unique monoterpenoid indole alkaloids, voacafricine A and B, which are present in the fruits of Voacanga africana, was investigated using density functional theory computations. The results of these calculations indicate that not only is the previously suggested pathway not energetically viable but also that an alternative biosynthetic precursor is likely.
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Affiliation(s)
- Esra N. Soysal
- School
of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, United Kingdom
- Department
of Chemistry, University of California-Davis, Davis, California 95616, United States
| | - Volkan Fındık
- Université
de Lorraine, CNRS, LPCT, Nancy F54000, France
- Department
of Chemistry, Faculty of Arts and Sciences, Marmara University, Istanbul 34722, Turkey
| | - Burcu Dedeoglu
- Department
of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey
| | - Viktorya Aviyente
- Department
of Chemistry, Bogazici University, Bebek 34342 Istanbul, Turkey
| | - Dean J. Tantillo
- Department
of Chemistry, University of California-Davis, Davis, California 95616, United States
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2
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Beutick SE, Vermeeren P, Hamlin TA. The 1,3-Dipolar Cycloaddition From Conception to Quantum Chemical Design. Chem Asian J 2022; 17:e202200553. [PMID: 35822651 PMCID: PMC9539489 DOI: 10.1002/asia.202200553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/08/2022] [Indexed: 11/12/2022]
Abstract
The 1,3‐dipolar cycloaddition (1,3‐DCA) reaction, conceptualized by Rolf Huisgen in 1960, has proven immensely useful in organic, material, and biological chemistry. The uncatalyzed, thermal transformation is generally sluggish and unselective, but the reactivity can be enhanced by means of metal catalysis or by the introduction of either predistortion or electronic tuning of the dipolarophile. These promoted reactions generally go with a much higher reactivity, selectivity, and yields, often at ambient temperatures. The rapid orthogonal reactivity and compatibility with aqueous and physiological conditions positions the 1,3‐DCA as an excellent bioorthogonal reaction. Quantum chemical calculations have been critical for providing an understanding of the physical factors that control the reactivity and selectivity of 1,3‐DCAs. In silico derived design principles have proven invaluable for the design of new dipolarophiles with tailored reactivity. This review discusses everything from the conception of the 1,3‐DCA all the way to the state‐of‐the‐art methods and models used for the quantum chemical design of novel (bioorthogonal) reagents.
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Affiliation(s)
- Steven E Beutick
- Vrije Universiteit Amsterdam, theoretical chemistry, NETHERLANDS
| | - Pascal Vermeeren
- Vrije Universiteit Amsterdam, theoretical chemistry, NETHERLANDS
| | - Trevor A Hamlin
- Vrije Universiteit Amsterdam, Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling, De Boelelaan 1083, 1081 HV, Amsterdam, NETHERLANDS
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3
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Prasad VK, Pei Z, Edelmann S, Otero-de-la-Roza A, DiLabio GA. BH9, a New Comprehensive Benchmark Data Set for Barrier Heights and Reaction Energies: Assessment of Density Functional Approximations and Basis Set Incompleteness Potentials. J Chem Theory Comput 2021; 18:151-166. [PMID: 34911294 DOI: 10.1021/acs.jctc.1c00694] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The calculation of accurate reaction energies and barrier heights is essential in computational studies of reaction mechanisms and thermochemistry. To assess methods regarding their ability to predict these two properties, high-quality benchmark sets are required that comprise a reasonably large and diverse set of organic reactions. Due to the time-consuming nature of both locating transition states and computing accurate reference energies for reactions involving large molecules, previous benchmark sets have been limited in scope, the number of reactions considered, and the size of the reactant and product molecules. Recent advances in coupled-cluster theory, in particular local correlation methods like DLPNO-CCSD(T), now allow the calculation of reaction energies and barrier heights for relatively large systems. In this work, we present a comprehensive and diverse benchmark set of barrier heights and reaction energies based on DLPNO-CCSD(T)/CBS called BH9. BH9 comprises 449 chemical reactions belonging to nine types common in organic chemistry and biochemistry. We examine the accuracy of DLPNO-CCSD(T) vis-a-vis canonical CCSD(T) for a subset of BH9 and conclude that, although there is a penalty in using the DLPNO approximation, the reference data are accurate enough to serve as a benchmark for density functional theory (DFT) methods. We then present two applications of the BH9 set. First, we examine the performance of several density functional approximations commonly used in thermochemical and mechanistic studies. Second, we assess our basis set incompleteness potentials regarding their ability to mitigate basis set incompleteness errors. The number of data points, the diversity of the reactions considered, and the relatively large size of the reactant molecules make BH9 the most comprehensive thermochemical benchmark set to date and a useful tool for the development and assessment of computational methods.
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Affiliation(s)
- Viki Kumar Prasad
- Department of Chemistry, University of British Columbia, 3247 University Way, Kelowna, British Columbia, Canada V1V 1V7
| | - Zhipeng Pei
- Department of Chemistry, University of British Columbia, 3247 University Way, Kelowna, British Columbia, Canada V1V 1V7
| | - Simon Edelmann
- Department of Chemistry, University of British Columbia, 3247 University Way, Kelowna, British Columbia, Canada V1V 1V7
| | - Alberto Otero-de-la-Roza
- Departamento de Química Física y Analítica and MALTA Consolider Team, Facultad de Química, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Gino A DiLabio
- Department of Chemistry, University of British Columbia, 3247 University Way, Kelowna, British Columbia, Canada V1V 1V7
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4
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Zhang XM, Li BS, Wang SH, Zhang K, Zhang FM, Tu YQ. Recent development and applications of semipinacol rearrangement reactions. Chem Sci 2021; 12:9262-9274. [PMID: 34349896 PMCID: PMC8314203 DOI: 10.1039/d1sc02386a] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/04/2021] [Indexed: 11/21/2022] Open
Abstract
As has been well-recognized, semipinacol rearrangement functions as an exceptionally useful methodology in the synthesis of β-functionalized ketones, creation of quaternary carbon centers, and construction of challenging carbocycles. Due to their versatile utilities in organic synthesis, development of novel rearrangement reactions has been a vibrant topic that continues to shape the research field. Recent breakthroughs in novel electrophiles, tandem processes, and enantioselective catalytic transformations further enrich the toolbox of this chemistry and spur the strategic applications of this methodology in natural product synthesis. These achievements will be discussed in this minireview.
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Affiliation(s)
- Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Bao-Sheng Li
- School of Chemistry and Chemical Engineering, Chongqing University Chongqing 400030 P. R. China
| | - Shao-Hua Wang
- State Key Laboratory of Applied Organic Chemistry and School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University Jiangmen Guangdong 529020 P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
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5
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Synthesis of 2′,3′,4′-triaryl-5,6-dihydro-8H-spiro[indolizine-7,5′-isoxazolidin]-8-ones via 1,3-dipolar cycloaddition reaction involving (Z)-C-aryl-N-phenylnitrones. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02774-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Liu Y, Li J. Quantitative Dynamics of the N 2O + C 2H 2 → Oxadiazole Reaction: A Model for 1,3-Dipolar Cycloadditions. ACS OMEGA 2020; 5:23343-23350. [PMID: 32954185 PMCID: PMC7496009 DOI: 10.1021/acsomega.0c03210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
The reaction N2O + C2H2 → oxadiazole has been considered as a prototype for 1,3-dipolar cycloadditions. Here, we report a comprehensive dynamical study of this important reaction on a full-dimensional potential energy surface, which is fitted to about 64 000 high-level ab initio data by a machine learning approach. Comprehensive dynamical simulations are carried out to provide quantitative chemical insight into its reaction dynamics. In addition to confirming the enhancement effect of the N2O bending mode on the reactivity, intricate mode specificity effects of other vibrational modes in reactants are revealed for the first time. The asymmetric stretching mode of N2O and the C-C-H bending mode of C2H2 show no effect. All remaining modes can enhance the reactivity. In particular, the vibrational excitation of the N2O symmetric stretching mode shows similar enhancement effect on the title reaction, compared to its bending mode excitation. Detailed analysis reveals that the concerted mechanism dominates with the reactants propelled sufficiently close to each other to yield product. This study advances our understanding of the chemical dynamics of the title reaction.
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7
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Breugst M, Reissig H. The Huisgen Reaction: Milestones of the 1,3-Dipolar Cycloaddition. Angew Chem Int Ed Engl 2020; 59:12293-12307. [PMID: 32255543 PMCID: PMC7383714 DOI: 10.1002/anie.202003115] [Citation(s) in RCA: 228] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Indexed: 12/21/2022]
Abstract
The concept of 1,3-dipolar cycloadditions was presented by Rolf Huisgen 60 years ago. Previously unknown reactive intermediates, for example azomethine ylides, were introduced to organic chemistry and the (3+2) cycloadditions of 1,3-dipoles to multiple-bond systems (Huisgen reaction) developed into one of the most versatile synthetic methods in heterocyclic chemistry. In this Review, we present the history of this research area, highlight important older reports, and describe the evolution and further development of the concept. The most important mechanistic and synthetic results are discussed. Quantum-mechanical calculations support the concerted mechanism always favored by R. Huisgen; however, in extreme cases intermediates may be involved. The impact of 1,3-dipolar cycloadditions on the click chemistry concept of K. B. Sharpless will also be discussed.
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Affiliation(s)
- Martin Breugst
- Department für ChemieUniversität zu KölnGreinstrasse 450939KölnGermany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
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8
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Breugst M, Reißig H. Die Huisgen‐Reaktion: Meilensteine der 1,3‐dipolaren Cycloaddition. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003115] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Hans‐Ulrich Reißig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustr. 3 14195 Berlin Deutschland
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9
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Tantillo DJ. Interrogating chemical mechanisms in natural products biosynthesis using quantum chemical calculations. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2020. [DOI: 10.1002/wcms.1453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dean J. Tantillo
- Department of Chemistry University of California–Davis Davis California
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10
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Shao H, Fang K, Wang YP, Zhang XM, Ding TM, Zhang SY, Chen ZM, Tu YQ. Total Synthesis of Fawcettimine-Type Alkaloid, Lycojaponicumin A. Org Lett 2020; 22:3775-3779. [PMID: 32330061 DOI: 10.1021/acs.orglett.0c00961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The efficient total synthesis of lycojaponicumin A (1) has been accomplished for the first time. The remarkable features of this novel strategy include the following: (1) rapid construction of tricyclic intermediate 4 through a regio- and stereoselective semipinacol ring expansion, which simplified the construction of rings A and B of 1; (2) the subsequent regio- and stereoselective formation of the highly strained rings C-E of 1 through a tandem oxa-hetero [3 + 2] cycloaddition/N-cycloalkylation.
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Affiliation(s)
- Hui Shao
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Kun Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
| | - Yun-Peng Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
| | - Tong-Mei Ding
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Zhi-Min Chen
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240.,State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
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11
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Synthesis, in vitro antimicrobial assessment, and computational investigation of pharmacokinetic and bioactivity properties of novel trifluoromethylated compounds using in silico ADME and toxicity prediction tools. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02550-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Rivilla I, Odriozola-Gimeno M, Aires A, Gimeno A, Jiménez-Barbero J, Torrent-Sucarrat M, Cortajarena AL, Cossío FP. Discovering Biomolecules with Huisgenase Activity: Designed Repeat Proteins as Biocatalysts for (3 + 2) Cycloadditions. J Am Chem Soc 2019; 142:762-776. [DOI: 10.1021/jacs.9b06823] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Iván Rivilla
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
| | - Mikel Odriozola-Gimeno
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
| | - Antonio Aires
- Parque Tecnológico de San Sebastián, CIC biomaGUNE, Paseo Miramón 182, 20014 Donostia/San Sebastián, Spain
| | - Ana Gimeno
- Molecular Recognition & Host−Pathogen Interactions Unit, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Jesús Jiménez-Barbero
- Molecular Recognition & Host−Pathogen Interactions Unit, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
- Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa 48940, Bizkaia, Spain
- Ikerbasque, Basque Foundation for Science, Ma Diaz de Haro 3, Bilbao 48013, Spain
| | - Miquel Torrent-Sucarrat
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Ma Diaz de Haro 3, Bilbao 48013, Spain
| | - Aitziber L. Cortajarena
- Parque Tecnológico de San Sebastián, CIC biomaGUNE, Paseo Miramón 182, 20014 Donostia/San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Ma Diaz de Haro 3, Bilbao 48013, Spain
| | - Fernando P. Cossío
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
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13
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Jamieson CS, Ohashi M, Liu F, Tang Y, Houk KN. The expanding world of biosynthetic pericyclases: cooperation of experiment and theory for discovery. Nat Prod Rep 2019; 36:698-713. [PMID: 30311924 DOI: 10.1039/c8np00075a] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Covering: 2000 to 2018 Pericyclic reactions are a distinct class of reactions that have wide synthetic utility. Before the recent discoveries described in this review, enzyme-catalyzed pericyclic reactions were not widely known to be involved in biosynthesis. This situation is changing rapidly. We define the scope of pericyclic reactions, give a historical account of their discoveries as biosynthetic reactions, and provide evidence that there are many enzymes in nature that catalyze pericyclic reactions. These enzymes, the "pericyclases," are the subject of this review.
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Affiliation(s)
- Cooper S Jamieson
- Department of Chemical and Biomolecular Engineering, Department of Chemistry and Biochemistry, University of California, Los Angeles 90095, USA.
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14
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Headley CA, Hoffman CN, Freisen JM, Han Y, Macklin JM, Zweier JL, Rockenbauer A, Kuret J, Villamena FA. Membrane-specific spin trap, 5-dodecylcarbamoyl-5-N-dodecylacetamide-1-pyroline-N-oxide (diC 12PO): theoretical, bioorthogonal fluorescence imaging and EPR studies. Org Biomol Chem 2019; 17:7694-7705. [PMID: 31328213 DOI: 10.1039/c9ob01334b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Membranous organelles are major endogenous sources of reactive oxygen and nitrogen species. When present at high levels, these species can cause macromolecular damage and disease. To better detect and scavenge free radical forms of the reactive species at their sources, we investigated whether nitrone spin traps could be selectively targeted to intracellular membranes using a bioorthogonal imaging approach. Electron paramagnetic resonance imaging demonstrated that the novel cyclic nitrone 5-dodecylcarbamoyl-5-N-dodecylacetamide-1-pyroline-N-oxide (diC12PO) could be used to target the nitrone moiety to liposomes composed of phosphatidyl choline. To test localization with authentic membranes in living cells, fluorophores were introduced via strain-promoted alkyne-nitrone cycloaddition (SPANC). Two fluorophore-conjugated alkynes were investigated: hexynamide-fluoresceine (HYA-FL) and dibenzylcyclooctyne-PEG4-5/6-sulforhodamine B (DBCO-Rhod). Computational and mass spectrometry experiments confirmed the cycloadduct formation of DBCO-Rhod (but not HYA-FL) with diC12PO in cell-free solution. Confocal microscopy of bovine aortic endothelial cells treated sequentially with diC12PO and DBCO-Rhod demonstrated clear localization of fluorescence with intracellular membranes. These results indicate that targeting of nitrone spin traps to cellular membranes is feasible, and that a bioorthogonal approach can aid the interrogation of their intracellular compartmentalization properties.
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Affiliation(s)
- Colwyn A Headley
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Claire N Hoffman
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Juliana M Freisen
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Yongbin Han
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Joseph M Macklin
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Jay L Zweier
- Davis Heart and Lung Research Institute, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry, Hungarian Academy of Sciences, and Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary
| | - Jeff Kuret
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Frederick A Villamena
- Department of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
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15
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Silva VS, Tolentino TA, Rodrigues TCAF, Santos FFM, Machado DFS, Silva WA, Oliveira HCBD, Machado AHL. Unprecedented E-stereoselectivity on the sigmatropic Hurd-Claisen rearrangement of Morita-Baylis-Hillman adducts: a joint experimental-theoretical study. Org Biomol Chem 2019; 17:4498-4511. [PMID: 30990513 DOI: 10.1039/c9ob00533a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the first systematic investigation of the tandem mercury(ii) catalysed transvinylation/Hurd-Claisen rearrangement of MBH adducts derived from alkyl acrylates. This is the first report of E-selectivity for MBH adducts with alkyl side chains and is complementary to the previously reported Johnson-Claisen and Eschenmoser-Claisen rearrangements. The rearrangement products were obtained in good yields and could be readily converted to 2-alkenyl δ-valerolactones. Combined DFT and F-SAPT studies demonstrate that reaction rates are primarily governed by non-covalent interactions dictating the relative stability of the transition states. Our F-SAPT calculations revealed that the hyperconjugative effects are not so significant, but that electrostatic interactions, instead, are the driving forces for the relative E : Z stereoselectivity.
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Affiliation(s)
- Vinicius Sobral Silva
- Instituto de Química, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900 - Brasília, DF, Brazil.
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16
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Haun G, Paneque AN, Almond DW, Austin BE, Moura-Letts G. Synthesis of Chromenoisoxazolidines from Substituted Salicylic Nitrones via Visible-Light Photocatalysis. Org Lett 2019; 21:1388-1392. [PMID: 30779582 DOI: 10.1021/acs.orglett.9b00097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This effort reports the first redox-neutral visible-light photocatalytic intramolecular dipolar cycloaddition for the diastereoselective synthesis of chromenoisoxazolidines. The authors have found that alkenylphenyl nitrones with a diverse substitution pattern on the aromatic ring and the alkenyl substituent undergo visible-light-promoted cycloadditions in the presence of catalytic amounts of Ru(bpy)3Cl2 in high yields and selectivities. Evidence indicates that the proposed redox-neutral pathway is the predominant photoredox mechanism for this transformation.
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Affiliation(s)
- Graham Haun
- Department of Chemistry and Biochemistry , Rowan University , 201 Mullica Hill Road , Glassboro , New Jersey 08028 , United States
| | - Alyson N Paneque
- Department of Chemistry and Biochemistry , Rowan University , 201 Mullica Hill Road , Glassboro , New Jersey 08028 , United States
| | - David W Almond
- Department of Chemistry and Biochemistry , Rowan University , 201 Mullica Hill Road , Glassboro , New Jersey 08028 , United States
| | - Brooke E Austin
- Department of Chemistry and Biochemistry , Rowan University , 201 Mullica Hill Road , Glassboro , New Jersey 08028 , United States
| | - Gustavo Moura-Letts
- Department of Chemistry and Biochemistry , Rowan University , 201 Mullica Hill Road , Glassboro , New Jersey 08028 , United States
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17
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Insights into the enzymatic formation, chemical features, and biological role of the flavin-N5-oxide. Curr Opin Chem Biol 2018; 47:47-53. [DOI: 10.1016/j.cbpa.2018.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/31/2018] [Accepted: 08/07/2018] [Indexed: 11/22/2022]
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18
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Żaczek S, Kowalska J, Dybala-Defratyka A. Ligand-Driven Conformational Dynamics Influences Selectivity of UbiX. Chembiochem 2018; 19:2403-2409. [PMID: 30136768 DOI: 10.1002/cbic.201800389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Indexed: 12/31/2022]
Abstract
Up until now, it has remained elusive as to why the flavin prenyltransferase UbiX requires dimethylallyl monophosphate (DMAP) as one of its cosubstrates instead of dimethylallyl pyrophosphate (DMAPP), even though the former is not used in metabolic pathways, while the latter is a common isoprenoid precursor. Herein, mainly on the basis of molecular dynamics (MD) simulations, we demonstrate that the selectivity of UbiX may be governed by its conformational dynamics. The hydrogen-bonding network of UbiX does not facilitate a proper encompassing of DMAPP. This induces significant conformational changes of the enzyme that result mostly in unreactive trajectories, whereas DMAP remains at a catalytically competent position throughout the performed simulations. Within the presented study, we provide a justification for the atypical selectivity of UbiX.
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Affiliation(s)
- Szymon Żaczek
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Justyna Kowalska
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Agnieszka Dybala-Defratyka
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
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19
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Hughes JM, Gleason JL. A bio-inspired cascade and a late-stage directed sp3 C H lithiation enables a concise total synthesis of (−)-virosaine A. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Li Y, Xie F, Liu Y, Yang X, Li X. Regio- and Diastereoselective Access to Fused Isoxazolidines via Ru(II)-Catalyzed C–H Activation of Nitrones and Coupling with Perfluoroalkylolefins. Org Lett 2018; 20:437-440. [DOI: 10.1021/acs.orglett.7b03775] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yunyun Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Xie
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yuan Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xifa Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xingwei Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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21
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Quinn DJ, Tumbelty LN, Moscarello EM, Paneque AN, Zinsky AH, Russ MP, Haun GJ, Cinti NA, Dare RM, Moura-Letts G. One-pot synthesis of vinylisoxazolidines from simple hydroxylamines and conjugated carbonyls. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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The UbiX-UbiD system: The biosynthesis and use of prenylated flavin (prFMN). Arch Biochem Biophys 2017; 632:209-221. [DOI: 10.1016/j.abb.2017.07.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/19/2017] [Accepted: 07/24/2017] [Indexed: 12/17/2022]
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23
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Rivilla I, de Cózar A, Schäfer T, Hernandez FJ, Bittner AM, Eleta-Lopez A, Aboudzadeh A, Santos JI, Miranda JI, Cossío FP. Catalysis of a 1,3-dipolar reaction by distorted DNA incorporating a heterobimetallic platinum(ii) and copper(ii) complex. Chem Sci 2017; 8:7038-7046. [PMID: 29147531 PMCID: PMC5637124 DOI: 10.1039/c7sc02311a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/11/2017] [Indexed: 12/28/2022] Open
Abstract
A novel catalytic system based on covalently modified DNA is described. This catalyst promotes 1,3-dipolar reactions between azomethine ylides and maleimides. The catalytic system is based on the distortion of the double helix of DNA by means of the formation of Pt(ii) adducts with guanine units. This distortion, similar to that generated in the interaction of DNA with platinum chemotherapeutic drugs, generates active sites that can accommodate N-metallated azomethine ylides. The proposed reaction mechanism, based on QM(DFT)/MM calculations, is compatible with thermally allowed concerted (but asynchronous) [π4s + π2s] mechanisms leading to the exclusive formation of racemic endo-cycloadducts.
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Affiliation(s)
- Iván Rivilla
- Department of Organic Chemistry I , Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Donostia International Physics Center (DIPC) , Po Manuel Lardizabal 3 , E-20018 Donostia/San Sebastián , Spain .
| | - Abel de Cózar
- Department of Organic Chemistry I , Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Donostia International Physics Center (DIPC) , Po Manuel Lardizabal 3 , E-20018 Donostia/San Sebastián , Spain .
- Ikerbasque, Basque Foundation for Science , Ma Díaz de Haro 3 , E-48013 Bilbao , Spain
| | - Thomas Schäfer
- Ikerbasque, Basque Foundation for Science , Ma Díaz de Haro 3 , E-48013 Bilbao , Spain
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - Frank J Hernandez
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - Alexander M Bittner
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
- CIC NanoGUNE , Consolider. Tolosa Hiribidea, 76 , E-200018 Donostia/San Sebastián , Spain
| | - Aitziber Eleta-Lopez
- CIC NanoGUNE , Consolider. Tolosa Hiribidea, 76 , E-200018 Donostia/San Sebastián , Spain
| | - Ali Aboudzadeh
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - José I Santos
- SGIker NMR Facility , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - José I Miranda
- SGIker NMR Facility , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - Fernando P Cossío
- Department of Organic Chemistry I , Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Donostia International Physics Center (DIPC) , Po Manuel Lardizabal 3 , E-20018 Donostia/San Sebastián , Spain .
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24
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Donahue MG, Jentsch NG, Realini EC. An intramolecular para-phenolic allylation free radical cyclization strategy for the synthesis of alkaloids and terpenes with spiro[4.5]decane architectures. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Hughes JME, Gleason JL. A Concise Enantioselective Total Synthesis of (−)-Virosaine A. Angew Chem Int Ed Engl 2017; 56:10830-10834. [DOI: 10.1002/anie.201706273] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Jonathan M. E. Hughes
- 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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26
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Hughes JME, Gleason JL. A Concise Enantioselective Total Synthesis of (−)-Virosaine A. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706273] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jonathan M. E. Hughes
- 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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27
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Hong AY, Vanderwal CD. A Sequential Cycloaddition Strategy for the Synthesis of Alsmaphorazine B Traces a Path Through a Family of Alstonia Alkaloids. Tetrahedron 2017; 73:4160-4171. [PMID: 28943664 PMCID: PMC5603193 DOI: 10.1016/j.tet.2016.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Driven by a new biogenetic hypothesis, the first total synthesis of alsmaphorazine B and several related indole alkaloids has been achieved. Numerous early approaches proved unsuccessful owing to unproductive side reactivity; nevertheless, they provided important clues that guided the evolution of our strategy. Critical to our success was a major improvement in our Zincke aldehyde cycloaddition strategy, which permitted the efficient gram-scale synthesis of akuammicine. The sequential chemoselective oxidations of akuammicine leading up to the key oxidative rearrangement also yielded several biogenetically related indole alkaloids en route to alsmaphorazine B.
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Affiliation(s)
- Allen Y. Hong
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
| | - Christopher D. Vanderwal
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
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28
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Wang FX, Du JY, Wang HB, Zhang PL, Zhang GB, Yu KY, Zhang XZ, An XT, Cao YX, Fan CA. Total Synthesis of Lycopodium Alkaloids Palhinine A and Palhinine D. J Am Chem Soc 2017; 139:4282-4285. [DOI: 10.1021/jacs.6b13401] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fang-Xin Wang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Ji-Yuan Du
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Hui-Bin Wang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Peng-Lin Zhang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Guo-Biao Zhang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Ke-Yin Yu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Xiang-Zhi Zhang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Xian-Tao An
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Ye-Xing Cao
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Chun-An Fan
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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29
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Gu Q, Su P, Xia Y, Yang Z, Trindle CO, Knee JL. Quantitative probing of subtle interactions among H-bonds in alpha hydroxy carboxylic acid complexes. Phys Chem Chem Phys 2017; 19:24399-24411. [DOI: 10.1039/c7cp03917d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The alpha OH stretching frequency may be affected upon complexing with water and formic acid.
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Affiliation(s)
- Quanli Gu
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
- Chemistry Department
| | - Peifeng Su
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- China
| | - Yong Xia
- State Key Laboratory of Precision Spectroscopy
- School of Physics and Materials Science
- East China Normal University
- Shanghai 200062
- China
| | - Zhijun Yang
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
| | - Carl O. Trindle
- Chemistry Department
- University of Virginia
- Charlottesville
- USA
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30
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Romero-Rivera A, Garcia-Borràs M, Osuna S. Computational tools for the evaluation of laboratory-engineered biocatalysts. Chem Commun (Camb) 2016; 53:284-297. [PMID: 27812570 PMCID: PMC5310519 DOI: 10.1039/c6cc06055b] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/06/2016] [Indexed: 12/18/2022]
Abstract
Biocatalysis is based on the application of natural catalysts for new purposes, for which enzymes were not designed. Although the first examples of biocatalysis were reported more than a century ago, biocatalysis was revolutionized after the discovery of an in vitro version of Darwinian evolution called Directed Evolution (DE). Despite the recent advances in the field, major challenges remain to be addressed. Currently, the best experimental approach consists of creating multiple mutations simultaneously while limiting the choices using statistical methods. Still, tens of thousands of variants need to be tested experimentally, and little information is available on how these mutations lead to enhanced enzyme proficiency. This review aims to provide a brief description of the available computational techniques to unveil the molecular basis of improved catalysis achieved by DE. An overview of the strengths and weaknesses of current computational strategies is explored with some recent representative examples. The understanding of how this powerful technique is able to obtain highly active variants is important for the future development of more robust computational methods to predict amino-acid changes needed for activity.
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Affiliation(s)
- Adrian Romero-Rivera
- Institut de Química Computacional i Catàlisi and Departament de Química Universitat de Girona, Campus Montilivi, 17071 Girona, Catalonia, Spain.
| | - Marc Garcia-Borràs
- Department of Chemistry and Biochemistry, University of California, 607 Charles E. Young Drive, Los Angeles, California 90095, USA
| | - Sílvia Osuna
- Institut de Química Computacional i Catàlisi and Departament de Química Universitat de Girona, Campus Montilivi, 17071 Girona, Catalonia, Spain.
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31
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Berthet M, Cheviet T, Dujardin G, Parrot I, Martinez J. Isoxazolidine: A Privileged Scaffold for Organic and Medicinal Chemistry. Chem Rev 2016; 116:15235-15283. [PMID: 27981833 DOI: 10.1021/acs.chemrev.6b00543] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The isoxazolidine ring represents one of the privileged structures in medicinal chemistry, and there have been an increasing number of studies on isoxazolidine and isoxazolidine-containing compounds. Optimization of the 1,3-dipolar cycloaddition (1,3-DC), original methods including electrophilic or palladium-mediated cyclization of unsaturated hydroxylamine, has been developed to obtain isoxazolidines. Novel reactions involving the isoxazolidine ring have been highlighted to accomplish total synthesis or to obtain bioactive compounds, one of the most significant examples being probably the thermic ring contraction applied to the total synthesis of (±)-Gelsemoxonine. The unique isoxazolidine scaffold also exhibits an impressive potential as a mimic of nucleosides, carbohydrates, PNA, amino acids, and steroid analogs. This review aims to be a comprehensive and general summary of the different isoxazolidine syntheses, their use as starting building blocks for the preparation of natural compounds, and their main biological activities.
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Affiliation(s)
- Mathéo Berthet
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Thomas Cheviet
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans , IMMM UMR 6283 CNRS, Université du Maine, UFR Sciences et Techniques, Avenue Olivier Messiaen, 72085 Le Mans, France
| | - Isabelle Parrot
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
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32
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Bakthadoss M, Kannan D, Srinivasan J, Vinayagam V. Highly regio- and diastereo-selective synthesis of novel tri- and tetra-cyclic perhydroquinoline architectures via an intramolecular [3 + 2] cycloaddition reaction. Org Biomol Chem 2016; 13:2870-4. [PMID: 25620236 DOI: 10.1039/c4ob02203c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and efficient synthetic protocol was established for the construction of novel tri- and tetra-cyclic pyrrolo/pyrrolizinoquinoline architectures via the in situ formation of azomethine ylide followed by an intramolecular [3 + 2] cycloaddition reaction strategy. This protocol leads to the creation of two/three new rings and three/four contiguous stereocentres, in which one of them is a tetra-substituted carbon center, in a highly diastereoselective fashion with excellent yields.
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Affiliation(s)
- M Bakthadoss
- Department of Chemistry, Pondicherry University, Pondicherry - 605 014, India.
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34
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35
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Baunach M, Hertweck C. Natural 1,3-Dipolar Cycloadditions. Angew Chem Int Ed Engl 2015; 54:12550-2. [DOI: 10.1002/anie.201507120] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 01/06/2023]
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36
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Hong AY, Vanderwal CD. A synthesis of alsmaphorazine B demonstrates the chemical feasibility of a new biogenetic hypothesis. J Am Chem Soc 2015; 137:7306-9. [PMID: 26034815 PMCID: PMC4477012 DOI: 10.1021/jacs.5b04686] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An N-oxide fragmentation/hydroxylamine oxidation/intramolecular 1,3-dipolar cycloaddition cascade efficiently converted an oxidized congener of akuammicine into the complex, hexacyclic architecture of the alsmaphorazine alkaloids. This dramatic structural change shows the chemical feasibility of our novel proposal for alsmaphorazine biogenesis. Critical to these endeavors was a marked improvement in our previously reported Zincke aldehyde cycloaddition approach to indole alkaloids, which permitted the gram-scale synthesis of akuammicine. The chemoselective oxidations of akuammicine leading up to the key rearrangement also generated several biogenetically related alkaloids of the alstolucine and alpneumine families.
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Affiliation(s)
- Allen Y. Hong
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Christopher D. Vanderwal
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
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37
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38
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Strych S, Journot G, Pemberton RP, Wang SC, Tantillo DJ, Trauner D. Biomimetische Totalsynthese von Santalin Y. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411350] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Strych S, Journot G, Pemberton RP, Wang SC, Tantillo DJ, Trauner D. Biomimetic Total Synthesis of Santalin Y. Angew Chem Int Ed Engl 2015; 54:5079-83. [DOI: 10.1002/anie.201411350] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 03/06/2015] [Indexed: 11/11/2022]
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40
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Cui CX, Liu YJ. A DFT study on Diels-Alder cycloadditions oftrans-1,3-butadiene to C60and C70. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3408] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cheng-Xing Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry; Beijing Normal University; Beijing 100875 China
- School of Chemistry and Chemical Engineering; Henan Institute of Science and Technology; Xinxiang 453003 China
| | - Ya-Jun Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry; Beijing Normal University; Beijing 100875 China
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41
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Painter PP, Pemberton RP, Wong BM, Ho KC, Tantillo DJ. The Viability of Nitrone–Alkene (3 + 2) Cycloadditions in Alkaloid Biosynthesis. J Org Chem 2013; 79:432-5. [DOI: 10.1021/jo402487d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Phillip P. Painter
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Ryan P. Pemberton
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Bonnie M. Wong
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Krystina C. Ho
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Dean J. Tantillo
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
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