1
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Rodriguez Treviño AM, Loch-Temzelides P, Pandiri S, Kirkland JK, Davenport MT, Aguinaga U, Yousufuddin M, Ess DH, Kürti L. Forging structural complexity: diastereoselective synthesis of densely substituted β-lactams with dual functional handles for enhanced core modifications. Chem Sci 2024:d4sc01513d. [PMID: 39170719 PMCID: PMC11332334 DOI: 10.1039/d4sc01513d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 07/31/2024] [Indexed: 08/23/2024] Open
Abstract
The preparation of the β-lactam motif containing both C-Br and N-O bonds as functional handles remains an unmet synthetic challenge. Described herein is a novel and highly diastereoselective NBS-mediated cyclization of N-alkoxy α,β-unsaturated silyl imino ethers to furnish nearly three dozen α-bromo N-alkoxy β-lactams. The reaction gives rapid and convenient access to structurally diverse monocyclic, spirocyclic and fused β-lactams in moderate to good yields. The two functional handles were shown to be useful for the further elaboration of the β-lactam core.
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Affiliation(s)
| | | | - Sanjay Pandiri
- Department of Chemistry, Rice University Houston Texas 77030 USA
| | - Justin K Kirkland
- Department of Chemistry and Biochemistry, Brigham Young University Provo Utah 84604 USA
| | - Michael T Davenport
- Department of Chemistry and Biochemistry, Brigham Young University Provo Utah 84604 USA
| | - Ulises Aguinaga
- Department of Natural Sciences, University of North Texas at Dallas Dallas Texas 75241 USA
| | - Muhammed Yousufuddin
- Department of Natural Sciences, University of North Texas at Dallas Dallas Texas 75241 USA
| | - Daniel H Ess
- Department of Chemistry and Biochemistry, Brigham Young University Provo Utah 84604 USA
| | - László Kürti
- Department of Chemistry, Rice University Houston Texas 77030 USA
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2
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Moreno-Latorre M, de la Torre MC, Cabeza JA, García-Álvarez P, Sierra MA. Attaching Metal-Containing Moieties to β-Lactam Antibiotics: The Case of Penicillin and Cephalosporin. Inorg Chem 2024; 63:12593-12603. [PMID: 38923955 PMCID: PMC11234371 DOI: 10.1021/acs.inorgchem.4c01548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024]
Abstract
Procedures for the preparation of transition metal complexes having intact bicyclic cepham or penam systems as ligands have been developed. Starting from readily available 4-azido-2-azetidinones, a synthetic approach has been tuned using a copper-catalyzed azide-alkyne cycloaddition between 3-azido-2-azetinones and alkynes, followed by methylation and transmetalation to Au(I) and Ir(III) complexes from the mesoionic carbene Ag(I) complexes. This methodology was applied to 6-azido penam and 7-azido cepham derivatives to build 6-(1,2,3-triazolyl)penam and 7-(1,2,3-triazolyl)cepham proligands, which upon methylation and metalation with Au(I) and Ir(III) complexes yielded products derived from the coordination of the metal to the penam C6 and cepham C7 positions, preserving intact the bicyclic structure of the penicillin and cephalosporin scaffolds. The crystal structure of complex 28b, which has an Ir atom directly bonded to the intact penicillin bicycle, was determined by X-ray diffraction. This is the first structural report of a penicillin-transition-metal complex having the bicyclic system of these antibiotics intact. The selectivity of the coordination processes was interpreted using DFT calculations.
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Affiliation(s)
- María Moreno-Latorre
- Instituto
de Química Orgánica General, Consejo Superior de Investigaciones Científicas (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
- Centro
de Innovación en Química Avanzada ORFEO-CINQA, https://orfeocinqa.es/
| | - María C. de la Torre
- Instituto
de Química Orgánica General, Consejo Superior de Investigaciones Científicas (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
- Centro
de Innovación en Química Avanzada ORFEO-CINQA, https://orfeocinqa.es/
| | - Javier A. Cabeza
- Departamento
de Química Orgánica e Inorgánica, Facultad de
Química, Universidad de Oviedo, 33071 Oviedo, Spain
- Centro
de Innovación en Química Avanzada ORFEO-CINQA, https://orfeocinqa.es/
| | - Pablo García-Álvarez
- Departamento
de Química Orgánica e Inorgánica, Facultad de
Química, Universidad de Oviedo, 33071 Oviedo, Spain
- Centro
de Innovación en Química Avanzada ORFEO-CINQA, https://orfeocinqa.es/
| | - Miguel A. Sierra
- Departamento
de Química Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
- Centro
de Innovación en Química Avanzada ORFEO-CINQA, https://orfeocinqa.es/
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3
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Pahlavan F, Moosavi SS, Zolghadr AR, Iranpoor N. Electronic origins of the stereochemistry in β-lactam formed through the Staudinger reaction catalyzed by a nucleophile. RSC Adv 2023; 13:33654-33667. [PMID: 38020014 PMCID: PMC10653035 DOI: 10.1039/d3ra05286a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
This paper evaluates the electronic effects of molecular substituents on the stereoselectivity of the umpolung Staudinger catalytic reaction. This is especially important because experimental studies on constructing the β-lactam ring, a core structure of most antibiotics, through catalyzed Staudinger reactions have been massively progressing over the last century. Yet, there is a necessity for an in-depth understanding of the reaction mechanisms to help chemists, working on the well-established discoveries, improve these to optimize the stereoselectivity and yield of synthetic methods. Access to practical and effective advancements in forming optically pure β-lactam is paramount in the field of medical chemistry. This paper specifically investigates how changing the N-protecting group in the imine fragment can switch the stereoselectivity of the PPY-catalyzed Staudinger reaction. To do so, we employed the density functional theory (DFT) for geometry optimization and electronic analysis at the B3LYP/6-31G(d) level of theory to examine and compare the role of N-tosyl (N-Ts) and N-triflyl (N-Tf) imine on the mechanism pathways, i.e., imine-first or ketene-first, and stereochemistry of the reaction, i.e., cis or trans β-lactam. Our results show that the reaction mechanism pathway cannot be simply switched from ketene-first to imine-first by changing the substituent on the imine nitrogen atom, which is contrary to the reported experimental results, and both imines go through the ketene-first mechanism with different stereochemistries, which is cis selective for imine-Ts and trans selective for imine-Tf. Based on electronic analyses, the reversal in diastereoselectivity in the N-triflyl imine system could be attributed to the charge transfers and electron-density distribution over the transition states. Therefore, the cis/trans selectivity of the PPY-catalyzed Staudinger reaction could be effectively controlled by the electronic characteristics of the molecular substituents in the reactants. A N-protecting group in imine with a more electron-withdrawing nature seems to accelerate the stereo-determining step, ring closure, and increase the stabilization charge transfers in the transition state, leading to a preference for trans β-lactam formation. It seems that using a N-substituent with a higher electron-withdrawing nature can initially activate the imine by the nucleophilic catalyst in competition with ketene, i.e., imine-first versus ketene-first. These results can provide an insight into select proper substituents for the fragments to synthesis β-lactam with a desired stereochemistry. Also, a comprehensive comparison was performed between calculations with and without dispersion.
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Affiliation(s)
- Farideh Pahlavan
- Department of Chemistry, School of Science, Shiraz University Shiraz 71454 Iran
| | | | - Amin Reza Zolghadr
- Department of Chemistry, School of Science, Shiraz University Shiraz 71454 Iran
| | - Nasser Iranpoor
- Department of Chemistry, School of Science, Shiraz University Shiraz 71454 Iran
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4
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Sadaphal VA, Liu RS. Reactions of 1,3-Diphenyl Cyclopentadiene with α-Aryldiazo Ketones to Enable C-H Insertions versus [4 + 2]-Cycloadditions via Au Catalyst and P(C 6F 5) 3 Additive, Respectively. J Org Chem 2023; 88:14899-14910. [PMID: 37857361 DOI: 10.1021/acs.joc.3c01190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Two distinct reaction chemoselectivities were reported for the reactions of α-aryldiazo ketone with 1,3-diphenylcyclopentadiene using gold catalyst and phosphine additives, respectively. In the presence of gold catalyst, α-aryldiazo ketone forms gold carbenes initially that are trapped with this 1,3-disubstituted cyclopentadiene to afford C-H insertion products. In the presence of P(C6F5)3 additive, α-aryldiazo ketone forms diarylketenes initially at elevated temperature, which are further stabilized by P(C6F5)3 to secure their entity before proceeding to unprecedented [4C + 2C] cycloadditions.
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Affiliation(s)
- Vikas Ashokrao Sadaphal
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Rai-Shung Liu
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
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5
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Guan Q, Zhou LL, Dong YB. Construction of Covalent Organic Frameworks via Multicomponent Reactions. J Am Chem Soc 2023; 145:1475-1496. [PMID: 36646043 DOI: 10.1021/jacs.2c11071] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Multicomponent reactions (MCRs) combine at least three reactants to afford the desired product in a highly atom-economic way and are therefore viewed as efficient one-pot combinatorial synthesis tools allowing one to significantly boost molecular complexity and diversity. Nowadays, MCRs are no longer confined to organic synthesis and have found applications in materials chemistry. In particular, MCRs can be used to prepare covalent organic frameworks (COFs), which are crystalline porous materials assembled from organic monomers and exhibit a broad range of properties and applications. This synthetic approach retains the advantages of small-molecule MCRs, not only strengthening the skeletal robustness of COFs, but also providing additional driving forces for their crystallization, and has been used to prepare a series of robust COFs with diverse applications. The present perspective article provides the general background for MCRs, discusses the types of MCRs employed for COF synthesis to date, and addresses the related critical challenges and future perspectives to inspire the MCR-based design of new robust COFs and promote further progress in this emerging field.
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Affiliation(s)
- Qun Guan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - Le-Le Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - Yu-Bin Dong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
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6
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Sasane AV, Liu RS. Catalyst-free diazo cross-coupling to access useful 3(2 H)-furanone derivatives. Chem Commun (Camb) 2023; 59:1086-1089. [PMID: 36622255 DOI: 10.1039/d2cc05912f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Catalyst-free synthesis of 3(2H)-furanone derivatives has been achieved from metal-free cross-coupling of α-diazo ester and α-aryldiazo ketones. This reaction sequence comprises a prior Wolff rearrangement of α-aryldiazo ketones to 2-arylketenes, which are trapped in situ with α-diazo esters to form cyclopropanones before undergoing oxa-Nazarov cyclization.
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Affiliation(s)
- Amit Vijay Sasane
- A Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, ROC.
| | - Rai-Shung Liu
- A Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, ROC.
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7
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Bogdos MK, Müller P, Morandi B. Structural Evidence for Aromatic Heterocycle N–O Bond Activation via Oxidative Addition. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Michael K. Bogdos
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - Patrick Müller
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - Bill Morandi
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
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8
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One-pot synthesis of cyclic-aminotropiminium carboxylate derivatives with DNA binding and anticancer properties. Commun Chem 2022; 5:179. [PMID: 36697960 PMCID: PMC9814901 DOI: 10.1038/s42004-022-00798-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 12/15/2022] [Indexed: 12/28/2022] Open
Abstract
Tropolone, a nonbenzenoid aromatic molecule, is a constituent of troponoid natural products possessing a wide range of bioactivities, including anticancer. This report describes the one-pot synthesis and mechanistic studies of fifteen fluorescent Caryl-Nalkyl-substituted cyclic-aminotroponiminium carboxylate (cATC) derivatives by unusual cycloaddition and rearrangement reactions. Herein, the biochemical studies of four cATC derivatives reveal a non-intercalative binding affinity with DNA duplex. In vitro/in vivo studies show strong anti-tumor activity in three cATC derivatives. These derivatives enter the cells and localize to the nucleus and cytoplasm, which are easily traceable due to their inherent fluorescence properties. These three cATC derivatives reduce the proliferation and migration of HeLa cells more than the non-cancer cell line. They induce p38-p53-mediated apoptosis and inhibit EMT. In xenograft-based mouse models, these cATC derivatives reduce tumor size. Overall, this study reports the synthesis of DNA binding fluorescent Caryl-Nalkyl-cyclic-aminotroponiminium derivatives which show anti-tumor activity with the minimum side effect.
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9
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Oddy MJ, Kusza DA, Epton RG, Lynam JM, Unsworth WP, Petersen WF. Visible-Light-Mediated Energy Transfer Enables the Synthesis of β-Lactams via Intramolecular Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2022; 61:e202213086. [PMID: 36205440 PMCID: PMC9828223 DOI: 10.1002/anie.202213086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Indexed: 11/07/2022]
Abstract
The synthesis of 2-azetidinones (β-lactams) from simple acrylamide starting materials by visible-light-mediated energy transfer catalysis is reported. The reaction features a C(sp3 )-H functionalization via a variation of the Norrish-Yang photocyclization involving a carbon-to-carbon 1,5-hydrogen atom transfer (supported by deuterium labelling and DFT calculations) and can be used for the construction of a diverse range of β-lactam products.
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Affiliation(s)
- Meghan J. Oddy
- Department of ChemistryUniversity of Cape TownRondebosch, Cape Town7700South Africa
| | - Daniel A. Kusza
- Department of ChemistryUniversity of Cape TownRondebosch, Cape Town7700South Africa
| | - Ryan G. Epton
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
| | | | | | - Wade F. Petersen
- Department of ChemistryUniversity of Cape TownRondebosch, Cape Town7700South Africa
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10
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Saini P, Bari SS, Yadav P, Khullar S, Mandal SK, Bhalla A. Synthesis of
C2
‐Formamide(thiophene)pyrazolyl‐
C4
’‐carbaldehyde and their Transformation to Schiff's Bases and Stereoselective
trans
‐β‐Lactams: Mechanistic and Theoretical Insights. ChemistrySelect 2022. [DOI: 10.1002/slct.202202172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Preety Saini
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Shamsher S. Bari
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Pooja Yadav
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Sadhika Khullar
- Department of Chemistry Dr. B. R. Ambedkar National Institute of Technology Jalandhar 144011 Punjab India
| | - Sanjay K. Mandal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali 140306 Punjab India
| | - Aman Bhalla
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
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11
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Avello MG, Moreno-Latorre M, de la Torre MC, Casarrubios L, Gornitzka H, Hemmert C, Sierra MA. β-Lactam and penicillin substituted mesoionic metal carbene complexes. Org Biomol Chem 2022; 20:2651-2660. [PMID: 35293422 DOI: 10.1039/d2ob00216g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2,3-Triazolylidene MIC M-complexes (M = Au, Pd, Pt) having 2-azetidinones and penicillin G substituents at the triazole ring were prepared by CuAAC on 2-azetidinones having a terminal alkyne tethered at N1, followed by alkylation of the 1,2,3-triazole ring and transmetallation [Au(I), Pd(II) and Pt(II)]. The Au-MIC complexes efficiently catalyze the regioselective cycloisomerization of enynes, while the Pt-MIC complexes were efficient catalysts in hydrosilylation reactions.
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Affiliation(s)
- Marta G Avello
- Instituto de Química Orgánica General, Consejo Superior de Investigaciones Científicas (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. .,Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain. .,Centro de Investigación en Química Avanzada (ORFEO-CINQA), Universidad Complutense, 28040 Madrid, Spain
| | - María Moreno-Latorre
- Instituto de Química Orgánica General, Consejo Superior de Investigaciones Científicas (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. .,Centro de Investigación en Química Avanzada (ORFEO-CINQA), Universidad Complutense, 28040 Madrid, Spain
| | - María C de la Torre
- Instituto de Química Orgánica General, Consejo Superior de Investigaciones Científicas (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. .,Centro de Investigación en Química Avanzada (ORFEO-CINQA), Universidad Complutense, 28040 Madrid, Spain
| | - Luis Casarrubios
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain. .,Centro de Investigación en Química Avanzada (ORFEO-CINQA), Universidad Complutense, 28040 Madrid, Spain
| | - Heinz Gornitzka
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | | | - Miguel A Sierra
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain. .,Centro de Investigación en Química Avanzada (ORFEO-CINQA), Universidad Complutense, 28040 Madrid, Spain
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12
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Cossío FP, de Cózar A, Sierra MA, Casarrubios L, Muntaner JG, Banik BK, Bandyopadhyay D. Role of imine isomerization in the stereocontrol of the Staudinger reaction between ketenes and imines. RSC Adv 2021; 12:104-117. [PMID: 35424513 PMCID: PMC8978721 DOI: 10.1039/d1ra06114c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 12/08/2021] [Indexed: 12/03/2022] Open
Abstract
Computational–experimental analysis has allowed determining that the stereochemistry of the Staudinger reaction between ketenes and imines is strongly associated with the nature of the imine, which affects the two steps of the reaction. The first step, namely the nucleophilic attack of the sp2-hybridized nitrogen atom of the imine on the sp-hybridized carbon atom of the ketene, is affected by the energetically accessible in situ isomerization patterns of the imine. The second step consists of a conrotatory electrocyclization of the zwitterionic intermediate formed in the previous step. This latter pericyclic step depends on the inward/outward torquoelectronic effects generated by the substituents of the imine. The impact of these factors on the stereochemistry of this reaction has been analyzed kinetically by numerical methods. The results of these simulations are compatible with the experimental results and support these conclusions. Experimental and computational studies reveal the importance of isomerization pathways in the Staudinger reaction between ketenes and imines. In the studied cases, the stereochemistry is determined by the pre-cycloaddition isomerization step.![]()
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Affiliation(s)
- Fernando P Cossío
- Kimika Fakultatea, Kimika Organikoa I Saila, Universidad del País Vasco - Euskal Herriko Unibertsitaea P. K. 1071 28018 San Sebastián-Donostia Spain .,Donostia International Physics Centre (DIPC) P.O. Box 1072 20018 San Sebastián-Donostia Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain
| | - Abel de Cózar
- Kimika Fakultatea, Kimika Organikoa I Saila, Universidad del País Vasco - Euskal Herriko Unibertsitaea P. K. 1071 28018 San Sebastián-Donostia Spain .,Donostia International Physics Centre (DIPC) P.O. Box 1072 20018 San Sebastián-Donostia Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,IKERBASQUE, Basque Foundation for Science 48009 Bilbao Spain
| | - Miguel A Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense 28040 Madrid Spain
| | - Luis Casarrubios
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense 28040 Madrid Spain
| | - Jaime G Muntaner
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense 28040 Madrid Spain
| | - Bimal K Banik
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Deanship of Research, Prince Mohammad Bin Fahd University Al Khobar Kingdom of Saudi Arabia .,Department of Chemistry, The University of Texas-Pan American 1201 West University Drive Edinburg Texas 78541 USA
| | - Debasish Bandyopadhyay
- Department of Chemistry, The University of Texas-Pan American 1201 West University Drive Edinburg Texas 78541 USA
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13
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Kapoor A, Rajput JK. Staudinger k
etene–imine
[2+2] cycloaddition of novel azomethines to synthesize biologically active azetidinone derivatives and their in vitro antimicrobial studies. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Atul Kapoor
- Department of Chemistry Dr. B.R Ambedkar National Institute of Technology Jalandhar India
| | - Jaspreet Kaur Rajput
- Department of Chemistry Dr. B.R Ambedkar National Institute of Technology Jalandhar India
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14
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Deketelaere S, Van Den Broeck E, Cools L, Deturck D, Naeyaert H, Van Hecke K, Stevens CV, Van Speybroeck V, D'hooghe M. Unexpected Formation of 2,2‐Dichloro‐
N
‐(chloromethyl)acetamides during Attempted Staudinger 2,2‐Dichloro‐β‐lactam Synthesis. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sari Deketelaere
- SynBioC Research Group Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Coupure Links 653 9000 Ghent Belgium
| | - Elias Van Den Broeck
- Center for Molecular Modeling Ghent University Technologiepark 46 9052 Zwijnaarde Belgium
| | - Lore Cools
- SynBioC Research Group Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Coupure Links 653 9000 Ghent Belgium
| | - Daan Deturck
- SynBioC Research Group Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Coupure Links 653 9000 Ghent Belgium
| | - Hannes Naeyaert
- Center for Molecular Modeling Ghent University Technologiepark 46 9052 Zwijnaarde Belgium
| | - Kristof Van Hecke
- XStruct Department of Chemistry Faculty of Sciences Ghent University Krijgslaan 281-S3 9000 Ghent Belgium
| | - Christian V. Stevens
- SynBioC Research Group Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Coupure Links 653 9000 Ghent Belgium
| | | | - Matthias D'hooghe
- SynBioC Research Group Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Coupure Links 653 9000 Ghent Belgium
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15
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Filatov V, Kuznetsova J, Petrovskaya L, Yuzabchuk D, Tafeenko VA, Zyk NV, Beloglazkina EK. cis-Diastereoselective Synthesis of Spirooxindolo-β-Lactams by Staudinger Cycloaddition with TsCl as Activating Co-reagent. ACS OMEGA 2021; 6:22740-22751. [PMID: 34514245 PMCID: PMC8427784 DOI: 10.1021/acsomega.1c03063] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
A convenient and versatile one-pot method for synthesis of 1,3-bis-aryl spirooxindolo-β-lactams from isatin Schiff bases and substituted phenylacetic acids using ketene-imine cycloaddition reaction with TsCl for a ketene generation has been developed. The reaction procedure does not require absolute solvents and unstable starting reagents. The studied reactions lead to cis-diastereoselective β-lactam formation for all tested phenylacetic acids except 4-MeOC6H4CH2COOH. An increase of trans-diastereomers yields with increasing temperature and solvent polarity was demonstrated.
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Affiliation(s)
- Vadim
E. Filatov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Juliana Kuznetsova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Lada Petrovskaya
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Dmitry Yuzabchuk
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Victor A. Tafeenko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Nikolay V. Zyk
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Elena K. Beloglazkina
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
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16
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Yamamoto Y, Kodama S, Nishimura R, Nomoto A, Ueshima M, Ogawa A. One-Pot Construction of Diverse β-Lactam Scaffolds via the Green Oxidation of Amines and Its Application to the Diastereoselective Synthesis of β-Amino Acids. J Org Chem 2021; 86:11571-11582. [PMID: 34319738 DOI: 10.1021/acs.joc.1c01128] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this study, a simple one-pot construction of β-lactam scaffolds was successfully achieved via 4,6-dihydroxysalicylic acid-catalyzed organocatalytic oxidation of amines to imines using molecular oxygen. Although some imines are highly unstable and difficult to isolate by conventional methods, the organocatalytic oxidation of amines described herein, followed by their direct reaction with acyl chlorides in the presence of a base, afforded a series of new β-lactam derivatives with excellent cis selectivity, which could not be synthesized and isolated by previously reported methods. Thus, this one-pot protocol will be one of the powerful methods applicable to the synthesis of various potential drug candidates and functional molecules. Furthermore, the subsequent hydrolysis of these β-lactams successfully afforded the corresponding β-amino acids as almost single diastereomers in up to 99% yields.
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Affiliation(s)
- Yuki Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Shintaro Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Riku Nishimura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akihiro Nomoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Michio Ueshima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
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17
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Minuto F, Lambruschini C, Basso A. Ketene 3‐Component Staudinger Reaction (K‐3CSR) to β‐Lactams: A New Entry in the Class of Photoinduced Multicomponent Reactions. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Federica Minuto
- Department of Chemistry and Industrial Chemistry Università degli Studi di Genova Via Dodecaneso 31 16146 Genova Italy
| | - Chiara Lambruschini
- Department of Chemistry and Industrial Chemistry Università degli Studi di Genova Via Dodecaneso 31 16146 Genova Italy
| | - Andrea Basso
- Department of Chemistry and Industrial Chemistry Università degli Studi di Genova Via Dodecaneso 31 16146 Genova Italy
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18
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Ye J, Bellotti P, Paulisch TO, Daniliuc CG, Glorius F. Durch sichtbares Licht vermittelte Cycloadditionen von α‐Ketoacylsilanen mit Iminen: Einfache Synthese von β‐Lactamen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian‐Heng Ye
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Peter Bellotti
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Tiffany O. Paulisch
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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19
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Ye JH, Bellotti P, Paulisch TO, Daniliuc CG, Glorius F. Visible-Light-Induced Cycloaddition of α-Ketoacylsilanes with Imines: Facile Access to β-Lactams. Angew Chem Int Ed Engl 2021; 60:13671-13676. [PMID: 33729650 DOI: 10.1002/anie.202102451] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/09/2021] [Indexed: 11/06/2022]
Abstract
We report the synthesis of β-lactams from α-ketoacylsilanes and imines, which proceeds via a formal [2+2] photochemical cycloaddition with in situ generation of siloxyketene. This mild and operationally simple reaction proceeds in an atom-economic fashion with broad substrate scope, including aldimines, ketimines, hydrazones, and fused nitrogen heterocycles, affording a variety of important β-lactams with satisfactory diastereoselectivities in most cases. This reaction also features good functional-group tolerance, facile scalability and product diversification. Experimental and computational studies suggest that α-ketoacylsilanes can serve as photochemical precursors by engaging in a 1,3 silicon shift to the distal carbonyl group.
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Affiliation(s)
- Jian-Heng Ye
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Peter Bellotti
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Tiffany O Paulisch
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
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20
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Affiliation(s)
- Manfred Braun
- Institute of Organic and Macromolecular Chemistry Heinrich-Heine-University Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
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21
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Singh VN, Sharma S. The facile and efficient synthesis of novel monocyclic cis-β-lactam conjugates with a 1-methyl-1 H-imidazole-2-thiol nucleus. NEW J CHEM 2021. [DOI: 10.1039/d1nj03566e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a facile and efficient synthesis of novel monocyclic cis-β-lactam conjugates with a 1-methyl-1H-imidazole-2-thiol nucleus through a ketene-imine [2+2] cycloaddition reaction of acyl chloride and different Schiff bases.
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Affiliation(s)
- Vedeshwar Narayan Singh
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna-800005, Bihar, India
| | - Sitaram Sharma
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna-800005, Bihar, India
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22
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Wang P, Yang D, Liu H. Recent Advances on the Synthesis of β-Lactams by Involving Carbon Monoxide. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202104060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Salarinejad S, Reza Islami M, Abbasnejad M, Zigheimat F, Kooshki R, Pouramiri B, Sadat Hosseini F. Access to the Naproxen Ring System, a Crowded β‐Lactam, through
In Situ
Generated Ketenes: Synthesis, Molecular Docking, and Evaluation of Anticonvulsant Activity. ChemistrySelect 2020. [DOI: 10.1002/slct.202003119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Somayeh Salarinejad
- Department of Chemistry Shahid Bahonar University of Kerman 22 Bahman boulevard 76169 Kerman Iran
- Department of Medicinal Chemistry Enghelab square 1417653761 Tehran Iran
| | - Mohammad Reza Islami
- Department of Chemistry Shahid Bahonar University of Kerman 22 Bahman boulevard 76169 Kerman Iran
| | - Mehdi Abbasnejad
- Department of Biology Shahid Bahonar University of Kerman 22 Bahman boulevard 76169 Kerman Iran
| | | | - Razieh Kooshki
- Department of Biology Shahid Bahonar University of Kerman 22 Bahman boulevard 76169 Kerman Iran
| | - Behjat Pouramiri
- Department of Medicinal Chemistry Enghelab square 1417653761 Tehran Iran
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24
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Balijepalli AS, McNeely JH, Hamoud A, Grinstaff MW. Guidelines for β-Lactam Synthesis: Glycal Protecting Groups Dictate Stereoelectronics and [2+2] Cycloaddition Kinetics. J Org Chem 2020; 85:12044-12057. [DOI: 10.1021/acs.joc.0c00510] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Anant S. Balijepalli
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - James H. McNeely
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Aladin Hamoud
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Mark W. Grinstaff
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
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25
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Cassú D. Computational Insight into the Scope of the Staudinger Cycloaddition Reaction for the Preparation of β‐Lactams. ChemistrySelect 2020. [DOI: 10.1002/slct.202000038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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N-Phenyl substituent controlled diastereoselective synthesis of β-lactam-isatin conjugates. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Aguado S, Casarrubios L, Ramírez de Arellano C, Sierra MA. Revisiting the photochemical synthesis of [FeFe]-hydrogenase mimics: reaction optimization, mechanistic study and electrochemical behaviour. RSC Adv 2020; 10:29855-29867. [PMID: 35518225 PMCID: PMC9056276 DOI: 10.1039/d0ra06002j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 07/31/2020] [Indexed: 02/05/2023] Open
Abstract
The photoreaction of [(μ-S)2Fe2(CO)6] and alkenes or alkynes has been optimized to readily obtain functionalized [FeFe]-hydrogenase mimics. Irradiation under low CO pressure in THF produces the corresponding photo-adducts in good/acceptable (alkenes/alkynes) yields, with retention of the starting olefin stereochemistry. DFT-calculations provide plausible reaction pathways in both, singlet and triplet states. The DFT-calculation based in the singlet state is energetically more favorable. The electrochemical behavior of the synthesized compounds is also presented, including studies in acidic media. The electrochemical properties of the products vary in the presence of a double bond (cycloaddition of [(μ-S)2Fe2(CO)6] to alkynes), respect to a single bond (cycloaddition to alkenes). The photochemistry of [(μ-S)2Fe2(CO)6] and alkenes or alkynes has been developed to a synthetically useful level. Computational data and electrochemistry of the photoadducts show interesting properties of these compounds.![]()
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Affiliation(s)
- Sergio Aguado
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Center for Innovation in Advanced Chemistry (ORFEO-CINQA)
- Universidad Complutense
- 28040-Madrid
| | - Luis Casarrubios
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Center for Innovation in Advanced Chemistry (ORFEO-CINQA)
- Universidad Complutense
- 28040-Madrid
| | - Carmen Ramírez de Arellano
- Departamento de Química Orgánica
- Center for Innovation in Advanced Chemistry (ORFEO-CINQA)
- Universidad de Valencia
- 46100-Valencia
- Spain
| | - Miguel A. Sierra
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Center for Innovation in Advanced Chemistry (ORFEO-CINQA)
- Universidad Complutense
- 28040-Madrid
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28
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Filatov V, Kukushkin M, Kuznetsova J, Skvortsov D, Tafeenko V, Zyk N, Majouga A, Beloglazkina E. Synthesis of 1,3-diaryl-spiro[azetidine-2,3′-indoline]-2′,4-dionesviathe Staudinger reaction:cis- ortrans-diastereoselectivity with different addition modes. RSC Adv 2020; 10:14122-14133. [PMID: 35498462 PMCID: PMC9051608 DOI: 10.1039/d0ra02374d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 03/30/2020] [Indexed: 01/31/2023] Open
Abstract
A new synthetic approach for realizing biologically relevant bis-aryl spiro[azetidine-2,3′-indoline]-2′,4-diones was developed based on Staudinger ketene–imine cycloaddition through the one-pot reaction of substituted acetic acids and Schiff bases in the presence of oxalyl chloride and an organic base. A series of [azetidine-2,3′-indoline]-2′,4-diones were synthesized using this method. For comparison, the same compounds were obtained using a known technique, where ketene is generated from pre-synthesized acyl chloride. It was shown that the use of oxalyl chloride for ketene generation in the one-pot reaction at room temperature allows for the reversal of the diastereoselectivity of spiro-lactam formation, unlike previously described procedures. Two experimental techniques of the ketene–imine Staudinger reaction allowed different diastereomers of spiro-indolinone-β-lactams to be obtained.![]()
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Affiliation(s)
- Vadim Filatov
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | - Maksim Kukushkin
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | | | - Dmitry Skvortsov
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
- Skolkovo Institute of Science and Technology
| | - Viktor Tafeenko
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | - Nikolay Zyk
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | - Alexander Majouga
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
- National University of Science and Technology “MISiS”
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29
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Kutaszewicz R, Grzeszczyk B, Górecki M, Staszewska-Krajewska O, Furman B, Chmielewski M. Bypassing the stereoselectivity issue: transformations of Kinugasa adducts from chiral alkynes and non-chiral acyclic nitrones. Org Biomol Chem 2019; 17:6251-6268. [PMID: 31184687 DOI: 10.1039/c9ob00940j] [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
An approach to β-lactams via a reaction between chiral copper acetylides and acyclic nitrones is reported. Electronic circular dichroism (ECD) in combination with NMR spectroscopy was used to determine the absolute configuration of all components of complex mixtures of azetidinones. Stereochemical preferences observed in the studied reactions are discussed and a model of a new reaction pathway supported by DFT conformational analysis is proposed. Subsequent transformations of the synthesized Kinugasa adducts followed by epimerization at the C-3 carbon atom led to trans-substituted azetidinones with improved stereoselectivity, mimicking a variety of important β-lactam structures. On the other hand, the oxidation of the furyl residue to the carboxylic group followed by oxidative decarboxylation with lead tetraacetate afforded the more thermodynamically stable trans-substituted 4-acetoxy azetidinone. The latter strategy is particularly attractive for the diastereomeric mixture in which isomers with the same configuration at the C-3 carbon atom dominate.
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Affiliation(s)
- Rafał Kutaszewicz
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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30
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Chen PK, Wong YF, Yang D, Pettus TRR. Nucleophilic Imines and Electrophilic o-Quinone Methides, a Three-Component Assembly of Assorted 3,4-Dihydro-2 H-1,3-benzoxazines. Org Lett 2019; 21:7746-7749. [PMID: 31532216 DOI: 10.1021/acs.orglett.9b02655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot method for joining three separate components leading to an assortment of N-substituted 3,4-dihydro-2H-1,3-benzoxazines is described. The method involves the addition of a Grignard reagent to an o-OBoc salicylaldehyde in the presence of an imine. With a variety of components, 15 examples are presented, including the diastereoselective incorporation of chiral imines.
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Affiliation(s)
- Peishan Kc Chen
- Department of Chemistry and Biochemistry , University of California, Santa Barbara , Santa Barbara , California 93106-9510 , United States
| | - Yuk Fai Wong
- Department of Chemistry and Biochemistry , University of California, Santa Barbara , Santa Barbara , California 93106-9510 , United States
| | - Derek Yang
- Department of Chemistry and Biochemistry , University of California, Santa Barbara , Santa Barbara , California 93106-9510 , United States
| | - Thomas R R Pettus
- Department of Chemistry and Biochemistry , University of California, Santa Barbara , Santa Barbara , California 93106-9510 , United States
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31
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Chen L, Zhang L, Shao Y, Xu G, Zhang X, Tang S, Sun J. Rhodium-Catalyzed C═N Bond Formation through a Rebound Hydrolysis Mechanism and Application in β-Lactam Synthesis. Org Lett 2019; 21:4124-4127. [DOI: 10.1021/acs.orglett.9b01312] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Long Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Linxing Zhang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Guangyang Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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32
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Chen L, Wang K, Shao Y, Sun J. Stereoselective Synthesis of Fully Substituted β-Lactams via Metal–Organo Relay Catalysis. Org Lett 2019; 21:3804-3807. [DOI: 10.1021/acs.orglett.9b01255] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Long Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Kai Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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33
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Zhang R, Zhang Z, Zhou Q, Yu L, Wang J. The Generation of Difluoroketenimine and Its Application in the Synthesis of α,α‐Difluoro‐β‐amino Amides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rui Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Zhikun Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Qi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Lefei Yu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
- The State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 China
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34
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Zhang R, Zhang Z, Zhou Q, Yu L, Wang J. The Generation of Difluoroketenimine and Its Application in the Synthesis of α,α‐Difluoro‐β‐amino Amides. Angew Chem Int Ed Engl 2019; 58:5744-5748. [DOI: 10.1002/anie.201901591] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Rui Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Zhikun Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Qi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Lefei Yu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking University Beijing 100871 China
- The State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 China
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35
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Sierra MA, Casarrubios L, de la Torre MC. Bio-Organometallic Derivatives of Antibacterial Drugs. Chemistry 2019; 25:7232-7242. [PMID: 30730065 DOI: 10.1002/chem.201805985] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/05/2019] [Indexed: 12/11/2022]
Abstract
Overuse and misuse of antibacterial drugs has resulted in bacteria resistance and in an increase in mortality rates due to bacterial infections. Therefore, there is an imperative necessity of new antibacterial drugs. Bio-organometallic derivatives of antibacterial agents offer an opportunity to discover new active antibacterial drugs. These compounds are well-characterized products and, in several examples, their antibacterial activities have been studied. Both inhibition of the antibacterial activity and strong increase in the antibiotic activity of the parent drug have been found. The synthesis of the main classes of bio-organometallic derivatives of these drugs, as well as examples of the use of structure-activity relation (SAR) studies to increase the activity and to understand the mode of action of bio-organometallic antimicrobial peptides (BOAMPs) and platensimicyn bio-organometallic mimics is presented in this article.
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Affiliation(s)
- Miguel A Sierra
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040, Madrid, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense, 28040, Madrid, Spain
| | - Luis Casarrubios
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040, Madrid, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense, 28040, Madrid, Spain
| | - María C de la Torre
- Consejo Superior de Investigaciones Científicas (CSIC), Instituto de Química Orgánica General, Juan de la Cierva 3, 28006, Madrid, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense, 28040, Madrid, Spain
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36
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Lenci E, Innocenti R, Menchi G, Trabocchi A. Diversity-Oriented Synthesis and Chemoinformatic Analysis of the Molecular Diversity of sp 3-Rich Morpholine Peptidomimetics. Front Chem 2018; 6:522. [PMID: 30425982 PMCID: PMC6218424 DOI: 10.3389/fchem.2018.00522] [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: 06/29/2018] [Accepted: 10/10/2018] [Indexed: 12/03/2022] Open
Abstract
Diversity-Oriented Synthesis (DOS) consists of generating structurally diverse compounds from a complexity-generating reaction followed by cyclization steps and appendage diversity. DOS has gathered interest to systematically explore the chemical space by generating high-quality small-molecule collections as probes to investigate biological pathways. The generation of heterocycles using amino acid and sugar derivatives as building blocks is a powerful approach to access chemical and geometrical diversity thanks to the high number of stereocenters and the polyfunctionality of such compounds. Our efforts in this field are focused on the generation of diversity-oriented molecules of peptidomimetic nature as a tool addressing protein-protein interactions, taking advantage of amino acid- and sugar-derived polyfunctional building blocks to be applied in couple-pair synthetic approaches. In this paper, the combination of diversity-oriented synthesis and chemoinformatics analysis of chemical space and molecular diversity of heterocyclic peptidomimetics are reported, with particular interest toward carbohydrate- and amino acid-derived morpholine scaffolds with a higher fraction of sp3 carbon atoms. Also, the chemoinformatic analysis of chemical space and molecular diversity of 186 morpholine peptidomimetics is outlined.
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Affiliation(s)
- Elena Lenci
- Department of Chemistry “Ugo Schiff”, University of Florence, Florence, Italy
| | | | | | - Andrea Trabocchi
- Department of Chemistry “Ugo Schiff”, University of Florence, Florence, Italy
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37
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Anaya J, Grande M, Monleón LM, Sánchez RM. Synthesis and reactivity against Cp2TiCl of 4-isoprenyl-β-lactams. Trapping of N-titanoimidoyl radicals from cyanoformyl-2-azetidinones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Kumar Y, Bedi PMS, Singh P, Adeniyi AA, Singh-Pillay A, Singh P, Bhargava G. [2+2] Cycloadditions of Sorbyl Tosylate with Imines/1-Azadienes: A One-Pot Domino Approach forα-Alkylidene-β-lactams and Their Computational Studies and Antimicrobial Evaluation. ChemistrySelect 2018. [DOI: 10.1002/slct.201801605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemical Sciences; I. K. Gujral Punjab Technical University, Kapurthala; Punjab-144603 India
- UNAM-National Nanotechnology Research Center; Institute of Materials Science and Nanotechnology; Department of Chemistry; Bilkent University, 06800; Turkey
| | | | - Prabhpreet Singh
- Department of Chemistry; Guru Nanak Dev University; Amritsar-143005 India
| | - Adebayo A. Adeniyi
- Pharmacy Department; University of KwaZulu Natal; Westville Campus, Durban; Chemistry Department; University of Oye-Ekiti, Ekiti State; Nigeria
| | - Ashona Singh-Pillay
- School of Chemistry and Physics; University of KwaZulu Natal, P/Bag X54001, Westville; Durban 4000 South Africa
| | - Parvesh Singh
- School of Chemistry and Physics; University of KwaZulu Natal, P/Bag X54001, Westville; Durban 4000 South Africa
| | - Gaurav Bhargava
- Department of Chemical Sciences; I. K. Gujral Punjab Technical University, Kapurthala; Punjab-144603 India
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39
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Trulli L, Raglione V, Fioravanti S. Selective Synthesis of Trifluoromethyl β-Lactams by a Zn-Promoted 2-Bromo Ester Addition on C-CF 3-Substituted Aldimines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Laura Trulli
- Dipartimento di Chimica; Università degli Studi di Roma “La Sapienza”; P.le Aldo Moro 5 00185 Roma Italy
| | - Venanzio Raglione
- Dipartimento di Chimica; Università degli Studi di Roma “La Sapienza”; P.le Aldo Moro 5 00185 Roma Italy
| | - Stefania Fioravanti
- Dipartimento di Chimica; Università degli Studi di Roma “La Sapienza”; P.le Aldo Moro 5 00185 Roma Italy
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40
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Petrosyan A, Hauptmann R, Pospech J. Heteroarene N
-Oxides as Oxygen Source in Organic Reactions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800152] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andranik Petrosyan
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Str. 29a 18057 Rostock Germany
| | - Richy Hauptmann
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Str. 29a 18057 Rostock Germany
| | - Jola Pospech
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Str. 29a 18057 Rostock Germany
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41
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Savoie PR, von Hahmann CN, Penger A, Wei Z, Welch JT. The control of stereochemistry by the pentafluorosulfanyl group. Org Biomol Chem 2018; 16:3151-3159. [PMID: 29645036 DOI: 10.1039/c7ob03146g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The influence of pentafluorosulfanylation on biological activity has been revealed in numerous comparative studies of biologically active compounds, but considerably less is known about the influence of pentafluorosulfanylation on reactivity. Among the distinctive properties of the pentafluorosulfanyl group is the profound dipole moment that results from introduction of this substituent. It has been shown that dipolar effects coupled with the steric demand of the SF5 group may be employed to influence the stereochemistry of reactions, especially those processes with significant charge separation in the transition state. The Staudinger ketene-imine cycloaddition reaction is an ideal platform for investigation of dipolar control of diastereoselectivity by the pentafluorosulfanyl group.
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Affiliation(s)
- Paul R Savoie
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Ave., Albany, NY 12222, USA.
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42
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Marx D, Menéndez MI. Torquoselective Mechanochemical Activation of the Staudinger Reaction To Form β-Lactams. J Org Chem 2018; 83:2438-2441. [PMID: 29334463 DOI: 10.1021/acs.joc.7b03036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Staudinger reaction yielding β-lactam rings via [2 + 2] cycloaddition is a torquoselective reaction where the stereochemistry of the product can be steered by suitable substituents. Although the mechanochemical ring-opening of β-lactams has been investigated recently, the force-assisted synthesis of this important functional four-ring motif remains unexplored. As it will be computationally demonstrated, mechanochemical activation greatly reduces the barrier of the rate-limiting ring-closure step while, at the same time, preserves its torquoselectivity. This finding strongly suggests that strained four-membered rings can be readily incorporated in chain molecules using sonication techniques that greatly enhance reactivity while conserving selectivity.
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Affiliation(s)
- Dominik Marx
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum , 44780 Bochum, Germany
| | - María Isabel Menéndez
- Departamento de Química Física y Analítica, Facultad de Química Universidad de Oviedo , C/Julián Clavería 8, 33006 Oviedo, Spain
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43
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Kirichok AA, Shton IO, Pishel IM, Zozulya SA, Borysko PO, Kubyshkin V, Zaporozhets OA, Tolmachev AA, Mykhailiuk PK. Synthesis of Multifunctional Spirocyclic Azetidines and Their Application in Drug Discovery. Chemistry 2018; 24:5444-5449. [PMID: 29338097 DOI: 10.1002/chem.201800193] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Indexed: 11/12/2022]
Abstract
The synthesis of multifunctional spirocycles was achieved from common cyclic carboxylic acids (cyclobutane carboxylate, cyclopentane carboxylate, l-proline, etc.). The whole sequence included only two chemical steps-synthesis of azetidinones, and reduction into azetidines. The obtained spirocyclic amino acids were incorporated into a structure of the known anesthetic drug Bupivacaine. The obtained analogues were more active and less toxic than the original drug. We believe that this discovery will lead to a wide use of spirocyclic building blocks in drug discovery in the near future.
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Affiliation(s)
| | - Irina O Shton
- Enamine Ltd./Bienta, Chervonotkatska 78, 02094, Kyiv, Ukraine
| | - Irina M Pishel
- Enamine Ltd./Bienta, Chervonotkatska 78, 02094, Kyiv, Ukraine
| | - Sergey A Zozulya
- Enamine Ltd./Bienta, Chervonotkatska 78, 02094, Kyiv, Ukraine.,Taras Shevchenko National, University of Kyiv, Chemistry Department, Volodymyrska 64, 01601, Kyiv, Ukraine
| | - Petro O Borysko
- Enamine Ltd./Bienta, Chervonotkatska 78, 02094, Kyiv, Ukraine
| | - Vladimir Kubyshkin
- Institute of Chemistry, Technical University of Berlin, Müller-Breslau-Strasse 10, 10623, Berlin, Germany
| | - Olha A Zaporozhets
- Taras Shevchenko National, University of Kyiv, Chemistry Department, Volodymyrska 64, 01601, Kyiv, Ukraine
| | | | - Pavel K Mykhailiuk
- Enamine Ltd./Bienta, Chervonotkatska 78, 02094, Kyiv, Ukraine.,Taras Shevchenko National, University of Kyiv, Chemistry Department, Volodymyrska 64, 01601, Kyiv, Ukraine
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44
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Lall MS, Tao Y, Arcari JT, Boyles DC, Brown MF, Damon DB, Lilley SC, Mitton-Fry MJ, Starr J, Stewart AM, Sun J. Process Development for the Synthesis of Monocyclic β-Lactam Core 17. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.7b00359] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Manjinder S. Lall
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Yong Tao
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Joel T. Arcari
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - David C. Boyles
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Matthew F. Brown
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - David B. Damon
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Susan C. Lilley
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Mark J. Mitton-Fry
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Jeremy Starr
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Andrew Morgan Stewart
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
| | - Jianmin Sun
- Pfizer Worldwide Research and Development, Eastern
Point Road, Groton, Connecticut 06340, United States
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45
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Balachandra C, Sharma NK. Direct/Reversible Amidation of Troponyl Alkylglycinates via Cationic Troponyl Lactones and Mechanistic Insights. ACS OMEGA 2018; 3:997-1013. [PMID: 31457944 PMCID: PMC6641332 DOI: 10.1021/acsomega.7b01540] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 12/25/2017] [Indexed: 06/10/2023]
Abstract
The conversion of troponyl alkylglycinate acid/ester/amide derivatives (Trag acid/ester/amide) into cationic troponyl lactones (CTLs) in the presence of trifluoroacetic acid and their amidation with amines is described. The reversible amidation of Trag amides, that is, the cleavage and reformation of the Trag amide bond via CTLs is demonstrated. The direct amidation of Trag esters with the amino group of amino acid esters/peptide esters via CTLs is achieved. The direct amidation of the amine group of hydroxyl amino acid esters is selective over esterification. The Trag amide bond is stable under basic ester hydrolysis and Fmoc removal conditions. Hence, the troponyl alkylglycinates could be applicable as protecting groups for amine functionality of amino acids and peptides. The reaction mechanism was investigated by using a deuterium probe and studied by NMR and electrospray ionisation mass spectrometry techniques. Deuterium incorporation at α-CH2 strongly supported the formation of CTLs via ketene intermediates.
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Affiliation(s)
- Chenikkayala Balachandra
- School
of Chemical Sciences, National Institute
of Science Education and Research (NISER-Bhubaneswar), Jatani, Bhubaneswar 752050, Odisha, India
- Homi
Bhabha National Institute (HBNI), Mumbai 400094, India
| | - Nagendra K. Sharma
- School
of Chemical Sciences, National Institute
of Science Education and Research (NISER-Bhubaneswar), Jatani, Bhubaneswar 752050, Odisha, India
- Homi
Bhabha National Institute (HBNI), Mumbai 400094, India
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46
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47
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Bakulina O, Dar'in D, Krasavin M. Mixed carboxylic–sulfonic anhydride in reaction with imines: a straightforward route to water-soluble β-lactams via a Staudinger-type reaction. Org Biomol Chem 2018; 16:3989-3998. [DOI: 10.1039/c8ob00768c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The first example of employing a mixed carboxylic–sulfonic anhydride in reaction with imines is reported. It gave β-lactams, presumably, via a formal [2 + 2] cycloaddition (a Staudinger-type reaction).
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Affiliation(s)
- Olga Bakulina
- Saint Petersburg State University
- Saint Petersburg 199034
- Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University
- Saint Petersburg 199034
- Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University
- Saint Petersburg 199034
- Russian Federation
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48
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Chen YH, Lai CH, Sorra K, Chuang TH. Protecting-Group-Free Synthesis of 1-Phenylisoquinolin-4-ols: Thermal Cyclization of Methyl 2-[(Diphenylmethylidene)amino]acetates. J Org Chem 2017; 82:12849-12856. [PMID: 29065266 DOI: 10.1021/acs.joc.7b02240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A protecting-group-free synthetic approach to 1-phenylisoquinolin-4-ols was developed by the intramolecular thermal cyclization of methyl 2-[(diphenylmethylidene)amino]acetates. R1 and R2 substituents were found to affect the required reaction temperatures, time, and yields of the cyclized products. The reactivity of the Schiff bases increased upon introduction of α-benzoyl and α-ester groups (R2). The cyclization yield also depended on the position of the R1 substituents on the phenyl groups.
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Affiliation(s)
- Ying-Hui Chen
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan
| | - Chin-Hung Lai
- Department of Medical Applied Chemistry, Chung Shan Medical University , Taichung 40201, Taiwan
| | - Kumaraswamy Sorra
- Medicinal Chemistry Laboratory, Gunapati Venkata Krishnareddy Biosciences Private Limited , Hyderabad 500076, India
| | - Ta-Hsien Chuang
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan
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49
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Das TK, Mondal S, Gonnade RG, Biju AT. Base-Free and Catalyst-Free Synthesis of Functionalized Dihydrobenzoxazoles via Vinylogous Carbonate to Carbamate Rearrangement. Org Lett 2017; 19:5597-5600. [PMID: 28968106 DOI: 10.1021/acs.orglett.7b02733] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An unexpected, catalyst-free, and base-free intramolecular cyclization of N-aryloxyacrylate aldimines, under thermal conditions leading to the synthesis of functionalized dihydrobenzoxazoles, is reported. The reaction features a unique rearrangement of vinylogous carbonates to vinylogous carbamates resulting in a new carbon-oxygen and carbon-nitrogen bond construction. The reaction tolerates a broad range of functional groups and the desired products are formed in moderate to good yields.
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Affiliation(s)
- Tamal Kanti Das
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | - Santigopal Mondal
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
| | | | - Akkattu T Biju
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110020, India
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50
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Romero E, Minard C, Benchekroun M, Ventre S, Retailleau P, Dodd RH, Cariou K. Base-Mediated Generation of Ketenimines from Ynamides: Direct Access to Azetidinimines by an Imino-Staudinger Synthesis. Chemistry 2017. [DOI: 10.1002/chem.201702545] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Eugénie Romero
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Corinne Minard
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Mohamed Benchekroun
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Sandrine Ventre
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Robert H. Dodd
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Kevin Cariou
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
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