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Ciss I, Seck M, Figadère B, Ferrié L. Advances Toward Amphidinolides C, F and U: Isolations, Synthetic Studies and Total Syntheses. Chemistry 2024; 30:e202400471. [PMID: 38407454 DOI: 10.1002/chem.202400471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 02/27/2024]
Abstract
Amphidinolides C, F, and U, including C2-C4 analogs, are highly cytotoxic marine macrolides, mainly isolated from dinoflagellates of the genus Amphidinium. All these polyketides share a 75 % or more similar structure, highlighted by a macrolactone ring, at least one trans-2,5-substituted-THF motif and a characteristic polyenic side chain. From their isolation and absolute configurational assignment, the total synthesis of these marine macrolides represented an intense challenge to the organic synthesis community over the last 15 years, with around 14 research groups engaged in this inspiring task. In the first part of this review, we present the different approaches to the isolation and characterization of these natural products, including the most recent analogs, which may cast doubt on the biogenetic origin of these compounds. The various synthetic approaches to the total synthesis of C, F, and U amphidinolides are presented in a second part, focusing on key reactions and/or innovative strategies. The review concludes in a third section summarizing the successful approaches leading to the total synthesis of one of the members of this amphidinolide subfamily.
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Affiliation(s)
- Ismaila Ciss
- BioCIS, Faculté de Pharmacie, Université Paris-Saclay, CNRS, 91400, Orsay, France
- Laboratoire de Chimie Organique et Chimie Thérapeutique, Faculté de Médecine, de Pharmacie et d'Odontologie, Université Cheikh Anta Diop de Dakar -, BP 5005, Dakar-Fann, Sénégal
| | - Matar Seck
- Laboratoire de Chimie Organique et Chimie Thérapeutique, Faculté de Médecine, de Pharmacie et d'Odontologie, Université Cheikh Anta Diop de Dakar -, BP 5005, Dakar-Fann, Sénégal
| | - Bruno Figadère
- BioCIS, Faculté de Pharmacie, Université Paris-Saclay, CNRS, 91400, Orsay, France
| | - Laurent Ferrié
- BioCIS, Faculté de Pharmacie, Université Paris-Saclay, CNRS, 91400, Orsay, France
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2
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Saryazdi S, Parkin S, Grossman RB. 1,2-Diamination of Alkenes via 1,3-Dipolar Cycloaddition with Azidium Ions or Azides. Org Lett 2023; 25:331-335. [PMID: 36626894 DOI: 10.1021/acs.orglett.2c03908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We describe two new methods for the 1,2-diamination of alkenes. First, either an azidium ion (ArN═N+═NAr) undergoes 1,3-dipolar cycloaddition with an alkene to give a 1,2,3-triazolinium ion directly, or an intramolecular azide-alkene cycloaddition followed by N-benzylation provides the same. Second, hydrogenation of the 1,2,3-triazolinium ion over Raney Ni excises the central N atom and gives the 1,2-diamine. The stereochemistry of the alkene is usually, but not always, preserved in the 1,2-diamine.
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Affiliation(s)
- Setareh Saryazdi
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, United States
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, United States
| | - Robert B Grossman
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, United States
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3
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Sebest F, Radtanajiravong L, Kaukver S, White AJP, Díez-González S. Expedient metal-free preparation of aryl aziridines via thermal cycloaddition reactions. Chem Commun (Camb) 2022; 58:3681-3684. [PMID: 35226000 DOI: 10.1039/d1cc07213g] [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
A straightforward synthesis of aryl aziridines is reported from readily available azides and alkenes and using technical solvents in the presence of air. This methodology does not require any additives and the obtained compounds can be employed in ring-opening and ring-expansion reactions.
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Affiliation(s)
- Filip Sebest
- Imperial College London, Department of Chemistry, MSRH, 82 Wood Lane, London W12 0BZ, UK.
| | - Lalita Radtanajiravong
- Imperial College London, Department of Chemistry, MSRH, 82 Wood Lane, London W12 0BZ, UK.
| | - Siim Kaukver
- Imperial College London, Department of Chemistry, MSRH, 82 Wood Lane, London W12 0BZ, UK.
| | - Andrew J P White
- Imperial College London, Department of Chemistry, MSRH, 82 Wood Lane, London W12 0BZ, UK.
| | - Silvia Díez-González
- Imperial College London, Department of Chemistry, MSRH, 82 Wood Lane, London W12 0BZ, UK.
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4
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Dhara D, Dhara A, Bennett J, Murphy PV. Cyclisations and Strategies for Stereoselective Synthesis of Piperidine Iminosugars. CHEM REC 2021; 21:2958-2979. [PMID: 34713557 DOI: 10.1002/tcr.202100221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 12/31/2022]
Abstract
This personal account focuses on synthesis of polyhydroxylated piperidines, a subset of compounds within the iminosugar family. Cyclisations to form the piperidine ring include reductive amination, substitution via amines, iminium ions and cyclic nitrones, transamidification (N-acyl transfer), addition to alkenes, ring contraction and expansion, photoinduced electron transfer, multicomponent Ugi reaction and ring closing metathesis. Enantiomerically pure piperidines are obtained from chiral pool precursors (e. g. sugars, amino acids, Garner's aldehyde) or asymmetric reactions (e. g. epoxidation, dihydroxylation, aminohydroxylation, aldol, biotransformation). Our laboratory have contributed cascades based on reductive amination from glycosyl azide precursors as well as Huisgen azide-alkene cycloaddition. The latter's combination with allylic azide rearrangement has given substituted piperidines, including those with quaternary centres adjacent to nitrogen.
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Affiliation(s)
- Debashis Dhara
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland.,Unité de Chimie des Biomolécules, UMR 3523 CNRS, Institut Pasteur, Université de Paris, 28 rue du Dr Roux, 75015, Paris, France
| | - Ashis Dhara
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland
| | - Jack Bennett
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland
| | - Paul V Murphy
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland.,SSPC - The Science Foundation Ireland Research Centre for Pharmaceuticals, NUI Galway, University Road, Galway, H91 TK33, Ireland
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5
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Lumbroso A, Berthonneau C, Beaudet I, Quintard JP, Planchat A, García-Moreno MI, Ortiz Mellet C, Le Grognec E. A versatile stereocontrolled synthesis of 2-deoxyiminosugar C-glycosides and their evaluation as glycosidase inhibitors. Org Biomol Chem 2021; 19:1083-1099. [PMID: 33427829 DOI: 10.1039/d0ob02249g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A highly enantioselective synthesis of (R,S) or (S,S)-2,6-disubstituted dehydropiperidines has been previously achieved through Sn/Li transmetalation of the corresponding stannylated dehydropiperidines or of their precursors. Herein, we successively consider their Upjohn's syn dihydroxylation and their anti-dihydroxylation via an epoxidation reaction followed by epoxide opening reaction. The stereochemical course of these reactions was first reported including the use of appropriate protecting groups before considering the conversion of the obtained compounds into NH or NMe iminosugar hydrochlorides. A primary evaluation of the designed iminosugar C-glycosides as glycosidase inhibitors suggests candidates for the selective inhibition of α-galactosidase, amyloglycosidase and naringinase. Beyond the reported results, the method constitutes a highly modulable route for the synthesis of well stereodefined iminosugar C-glycosides, an advantage which might be used for the design of iminosugars to enhance their biological properties.
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Jamshaid F, Kondakal VV, Newman CD, Dobson R, João H, Rice CR, Mwansa JM, Thapa B, Hemming K. Cyclopropenones in the synthesis of indolizidine, pyrrolo[2,1-a]isoquinoline and indolizino[8,7-b]indole alkaloids. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131570] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Fox KA, Chadda R, Cardona F, Barron S, McArdle P, Murphy PV. Building blocks from monosaccharides for synthesis of scaffolds, including macrocycles. Application of allylic azide rearrangement, azide-alkyne cycloaddition and ring closing metathesis. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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A Route to 1-Deoxynojirimycin and 1-Deoxymannojirimycin Derivatives with Quaternary Centers Adjacent to the Ring Nitrogen from Methyl α-d
-Mannopyranoside. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Gour J, Gatadi S, Akunuri R, Yaddanapudi MV, Nengroo MA, Datta D, Chopra S, Nanduri S. Catalyst-free facile synthesis of polycyclic indole/pyrrole substituted-1,2,3-triazoles. Org Biomol Chem 2019; 17:8153-8165. [PMID: 31460554 DOI: 10.1039/c9ob01560d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and catalyst-free access to the fused polycyclic N-heterocycles via an intramolecular azide-alkene cascade reaction under mild reaction conditions has been developed. The reaction is applicable to both indole and pyrrole substrates, and a variety of substituents are tolerated. The entire sequence can be carried out in a one-pot operation. This methodology provides a sustainable and efficient access to a variety of novel polycyclic indole/pyrrole substituted-1,2,3-triazoles.
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Affiliation(s)
- Jitendra Gour
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Srikanth Gatadi
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Ravikumar Akunuri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | | | - Mushtaq Ahmad Nengroo
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Dipak Datta
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Janakipuram Extension, Lucknow 226031, Uttar Pradesh, India
| | - Srinivas Nanduri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
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10
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Gour J, Gatadi S, Pooladanda V, Ghouse SM, Malasala S, Madhavi YV, Godugu C, Nanduri S. Facile synthesis of 1,2,3-triazole-fused indolo- and pyrrolo[1,4]diazepines, DNA-binding and evaluation of their anticancer activity. Bioorg Chem 2019; 93:103306. [PMID: 31586710 DOI: 10.1016/j.bioorg.2019.103306] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 12/09/2022]
Abstract
A facile synthetic strategy has been developed for the generation of structurally diverse N-fused heterocycles. The formation of fused 1,2,3-triazole indolo and pyrrolodiazepines proceeds through an initial Knoevenagel condensation followed by intramolecular azide-alkyne cycloaddition reaction at room temperature without recourse to the traditional Cu(I)-catalyzed azide-alkyne cycloadditions. The synthesized compounds were evaluated for their in vitro anti-cancer activity against the NCI 60 cell line panel. Among the tested compounds, 3a and 3h were found to exhibit potent inhibitory activity against many of the cell lines. Cell cycle analysis indicated that the compounds inhibit the cell cycle at sub G1 phase. The DNA- nano drop method, viscosity experiment and docking studies suggested these compounds possess DNA binding affinity.
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Affiliation(s)
- Jitendra Gour
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Srikanth Gatadi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Venkatesh Pooladanda
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Shaik Mahammad Ghouse
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Satyaveni Malasala
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Y V Madhavi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Chandraiah Godugu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Srinivas Nanduri
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
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11
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Naguib H, Cao X, Gao H. Synthesize Hyperbranched Polymers Carrying Two Reactive Handles via CuAAC Reaction and Thiol–Ene Chemistry. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Hannah Naguib
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556‐5670 USA
| | - Xiaosong Cao
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556‐5670 USA
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
| | - Haifeng Gao
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556‐5670 USA
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12
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Carlson AS, Topczewski JJ. Allylic azides: synthesis, reactivity, and the Winstein rearrangement. Org Biomol Chem 2019; 17:4406-4429. [PMID: 30969292 PMCID: PMC6530792 DOI: 10.1039/c8ob03178a] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Organic azides are useful synthetic intermediates, which demonstrate broad reactivity. Unlike most organic azides, allylic azides can spontaneously rearrange to form a mixture of isomers. This rearrangement has been named the Winstein rearrangement. Using allylic azides can result in low yields and azide racemization in some synthetic contexts due to the Winstein rearrangement. Effort has been made to understand the mechanism of the Winstein rearrangement and to take advantage of this process. Several guiding principles can be used to identify which azides will produce a mixture of isomers and which will resist rearrangement. Selective reaction conditions can be used to differentiate the azide isomers in a dynamic manner. This review covers all aspects of allylic azides including their synthesis, their reactivity, the mechanism of the Winstein rearrangement, and reactions that can selectively elaborate an azide isomer. This review covers the literature from Winstein's initial report to early 2019.
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Affiliation(s)
- Angela S Carlson
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.
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13
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Frost GB, Mittelstaedt MN, Douglas CJ. Chemoselectivity for Alkene Cleavage by Palladium-Catalyzed Intramolecular Diazo Group Transfer from Azide to Alkene. Chemistry 2019; 25:1727-1732. [DOI: 10.1002/chem.201805904] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Indexed: 01/30/2023]
Affiliation(s)
- Grant B. Frost
- Department of Chemistry; University of Minnesota Twin Cities, Smith Hall; 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Michaela N. Mittelstaedt
- Department of Chemistry; University of Minnesota Twin Cities, Smith Hall; 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Christopher J. Douglas
- Department of Chemistry; University of Minnesota Twin Cities, Smith Hall; 207 Pleasant St SE Minneapolis MN 55455 USA
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14
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Wang Y, Leng L, Liu Y, Dai G, Xue F, Chen Z, Meng J, Wen G, Xiao Y, Liu XY, Qin Y. Asymmetric Synthesis of an Advanced Tetracyclic Framework of (+)-Sarain A. Org Lett 2018; 20:6701-6704. [PMID: 30346782 DOI: 10.1021/acs.orglett.8b02779] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lingying Leng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Guiying Dai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Fanglin Xue
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhihao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jiao Meng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Guohua Wen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yaxin Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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15
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Li J, Ye Y, Zhang Y. Cycloaddition/annulation strategies for the construction of multisubstituted pyrrolidines and their applications in natural product synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo01077j] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Pyrrolidines are privileged substructures of numerous bioactive natural products and drugs.
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Affiliation(s)
- Jundong Li
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yilin Ye
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
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16
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Zhang H, Zhang Y, Wang M, Li J, Di Q, Tian Z, Chen B, Tanimoto H, Morimoto T, Kakiuchi K. Acid Promoted Metal Free Synthesis of Triazole-Fused Heterocycles via Intramolecular [3+2] Cycloaddition. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13900] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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17
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Tangara S, Aupic C, Kanazawa A, Poisson JF, Py S. Aziridination of Cyclic Nitrones Targeting Constrained Iminosugars. Org Lett 2017; 19:4842-4845. [DOI: 10.1021/acs.orglett.7b02283] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Salia Tangara
- Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France
- CNRS, DCM, F-38000 Grenoble, France
| | - Clara Aupic
- Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France
- CNRS, DCM, F-38000 Grenoble, France
| | - Alice Kanazawa
- Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France
- CNRS, DCM, F-38000 Grenoble, France
| | - Jean-François Poisson
- Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France
- CNRS, DCM, F-38000 Grenoble, France
| | - Sandrine Py
- Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France
- CNRS, DCM, F-38000 Grenoble, France
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18
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Li JL, Hu DC, Liang XP, Wang YC, Wang HS, Pan YM. Praseodymium(III)-Catalyzed Regioselective Synthesis of C3-N-Substituted Coumarins with Coumarins and Azides. J Org Chem 2017; 82:9006-9011. [DOI: 10.1021/acs.joc.7b01410] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jiu-ling Li
- State
Key Laboratory for Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People’s Republic of China
| | - Da-chao Hu
- State
Key Laboratory for Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People’s Republic of China
| | - Xin-ping Liang
- State
Key Laboratory for Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People’s Republic of China
| | - Ying-Chun Wang
- College
of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People’s Republic of China
| | - Heng-Shan Wang
- State
Key Laboratory for Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People’s Republic of China
| | - Ying-ming Pan
- State
Key Laboratory for Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People’s Republic of China
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19
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Zhang Y, Xue Y, Luo T. An unexpected aziridination/rearrangement/oxidation tandem reaction leading to the total synthesis of (−)-mersicarpine. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Dürüst Y, Karakuş H. Microwave-assisted synthesis and crystal structure of some novel 1,2,4-oxadiazol-5-ylmethyl-1,2,3-triazoles. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1296158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Yaşar Dürüst
- Department of Chemistry, Abant İzzet Baysal University, Bolu, Turkey
| | - Hamza Karakuş
- Department of Chemistry, Abant İzzet Baysal University, Bolu, Turkey
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21
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Akwaboah DC, Wu D, Forsyth CJ. Stereoselective Synthesis of the C1-C9 and C11-C25 Fragments of Amphidinolides C, C2, C3, and F. Org Lett 2017; 19:1180-1183. [PMID: 28231009 DOI: 10.1021/acs.orglett.7b00217] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient synthesis of the C1-C9 and the C11-C25 fragments of amphidinolides C, C2, C3, and F from a common intermediate is reported. The construction of the C1-C9 fragment involves an intramolecular hetero-Michael cyclization to form the 3,5-disubstituted trans-tetrahydrofuran moiety. The approach to prepare the C11-C25 fragment utilizes a highly stereoselective aerobic cobalt-catalyzed alkenol cyclization and a chelated Mukaiyama aldol reaction to form the C13-C14 bond and to concomitantly install the C13 hydroxyl group.
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Affiliation(s)
- Daniel C Akwaboah
- Department of Chemistry and Biochemistry, The Ohio State University , Columbus, Ohio 43210, United States
| | - Dimao Wu
- Department of Chemistry and Biochemistry, The Ohio State University , Columbus, Ohio 43210, United States
| | - Craig J Forsyth
- Department of Chemistry and Biochemistry, The Ohio State University , Columbus, Ohio 43210, United States
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22
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Erhardt H, Kunz KA, Kirsch SF. Thermolysis of Geminal Diazides: Reagent-Free Synthesis of 3-Hydroxypyridines. Org Lett 2016; 19:178-181. [DOI: 10.1021/acs.orglett.6b03475] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hellmuth Erhardt
- Organic Chemistry, Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany
| | - Kevin A. Kunz
- Organic Chemistry, Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany
| | - Stefan F. Kirsch
- Organic Chemistry, Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany
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23
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Jiang Y, Golder MR, Nguyen HVT, Wang Y, Zhong M, Barnes JC, Ehrlich DJC, Johnson JA. Iterative Exponential Growth Synthesis and Assembly of Uniform Diblock Copolymers. J Am Chem Soc 2016; 138:9369-72. [PMID: 27406892 DOI: 10.1021/jacs.6b04964] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Studies on the phase segregation of unimolecular block copolymers (BCPs) are limited by a lack of reliable, versatile methods for the synthesis of such polymers on the preparative scale. Herein, we describe an advancement of Iterative Exponential Growth (IEG) wherein chiral allyl-based IEG oligomers are subjected to thiol-ene reactions and converted into unimolecular BCPs. With this strategy we have synthesized uniform BCPs with molar masses up to 12.1 kDa on ∼1 g scale. BCPs composed of decane-based side chains and either triethyleneglycol- or thioglycerol-based side chains phase-segregate into hexagonal cylinder morphologies. The assembly is not driven by side-chain crystallization, but is instead the result of amorphous BCP assembly.
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Affiliation(s)
- Yivan Jiang
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Matthew R Golder
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Hung V-T Nguyen
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Yufeng Wang
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Mingjiang Zhong
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jonathan C Barnes
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Deborah J C Ehrlich
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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24
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Dhiman S, Mishra UK, Ramasastry SSV. One-Pot Trimetallic Relay Catalysis: A Unified Approach for the Synthesis of β-Carbolines and Other [c]-Fused Pyridines. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600840] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Seema Dhiman
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - Uttam K. Mishra
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
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25
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Dhiman S, Mishra UK, Ramasastry SSV. One-Pot Trimetallic Relay Catalysis: A Unified Approach for the Synthesis of β-Carbolines and Other [c]-Fused Pyridines. Angew Chem Int Ed Engl 2016; 55:7737-41. [DOI: 10.1002/anie.201600840] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Seema Dhiman
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - Uttam K. Mishra
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
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26
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Harit VK, Ramesh NG. Amino-functionalized iminocyclitols: synthetic glycomimetics of medicinal interest. RSC Adv 2016. [DOI: 10.1039/c6ra23513a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A review on the syntheses and biological activities of unnatural glycomimetics highlighting the effect of replacement of hydroxyl groups of natural iminosugars by amino functionalities is presented.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi - 110016
- India
| | - Namakkal G. Ramesh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi - 110016
- India
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27
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Moynihan L, Chadda R, McArdle P, Murphy PV. Allylic Azide Rearrangement in Tandem with Huisgen Cycloaddition for Stereoselective Annulation: Synthesis of C-Glycosyl Iminosugars. Org Lett 2015; 17:6226-9. [PMID: 26650965 DOI: 10.1021/acs.orglett.5b03209] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Allylic azide rearrangement is used in tandem with intramolecular azide-alkene cycloaddition to give a triazoline that when subsequently decomposed in the presence of a nucleophile gives piperidines. The tandem reaction gives two stereocenters that are generated with high control. The formation of the piperidines required the presence of innate conformational constraint. The applicability of the annulation reaction is demonstrated by the synthesis of iminosugars. A proposal is included to account for the observed stereoselectivity, which is influenced by the precursor structure.
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Affiliation(s)
- Lorna Moynihan
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland
| | - Rekha Chadda
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland
| | - Patrick McArdle
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland
| | - Paul V Murphy
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland
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28
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Wang Y, Li J, He Y, Xie Y, Wang H, Pan Y. Synthesis of Polysubstituted Imidazoles and PyridinesviaSamarium(III) Triflate-Catalyzed [2+2+1] and [4+2] Annulations of Unactivated Aromatic Alkenes with Azides. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500584] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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29
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Tadpetch K, Jeanmard L, Rukachaisirikul V. Total synthesis of the proposed structure of pestalotioprolide A. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.06.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Adhikary ND, Kwon S, Chung WJ, Koo S. One-Pot Conversion of Carbohydrates into Pyrrole-2-carbaldehydes as Sustainable Platform Chemicals. J Org Chem 2015; 80:7693-701. [DOI: 10.1021/acs.joc.5b01349] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Nirmal Das Adhikary
- Department of Energy Science and
Technology and ‡Department of Chemistry, Myong Ji University, Myongji-Ro 116,
Cheoin-Gu, Yongin, Gyeonggi-Do 449-728, Korea
| | - Sunjeong Kwon
- Department of Energy Science and
Technology and ‡Department of Chemistry, Myong Ji University, Myongji-Ro 116,
Cheoin-Gu, Yongin, Gyeonggi-Do 449-728, Korea
| | - Wook-Jin Chung
- Department of Energy Science and
Technology and ‡Department of Chemistry, Myong Ji University, Myongji-Ro 116,
Cheoin-Gu, Yongin, Gyeonggi-Do 449-728, Korea
| | - Sangho Koo
- Department of Energy Science and
Technology and ‡Department of Chemistry, Myong Ji University, Myongji-Ro 116,
Cheoin-Gu, Yongin, Gyeonggi-Do 449-728, Korea
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31
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Chacko S, Ramapanicker R. Diastereoselective Synthesis of 1-Deoxygalactonojirimycin, 1-Deoxyaltronojirimycin, and N-Boc-(2S,3S)-3-Hydroxypipecolic Acid via Proline Catalyzed α-Aminoxylation of Aldehydes. J Org Chem 2015; 80:4776-82. [DOI: 10.1021/acs.joc.5b00424] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shibin Chacko
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, India 208016
| | - Ramesh Ramapanicker
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, India 208016
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32
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Zhang H, Hayashi K, Tanimoto H, Morimoto T, Nishiyama Y, Kakiuchi K. Total synthesis of unsaturated imine venom alkaloids of Costa Rican ant by way of Schmidt reaction via allyl/pentadienyl cations. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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33
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Bhattacharya D, Ghorai A, Pal U, Chandra Maiti N, Chattopadhyay P. Stereoselective domino azidation and [3 + 2] cycloaddition: a facile route to chiral heterocyclic scaffolds from carbohydrate derived synthons. RSC Adv 2014. [DOI: 10.1039/c3ra45363d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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34
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Sorto NA, Painter PP, Fettinger JC, Tantillo DJ, Shaw JT. Design and synthesis of mimics of the T7-loop of FtsZ. Org Lett 2013; 15:2700-3. [PMID: 23721122 DOI: 10.1021/ol4010068] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Mimics of the T7-loop of the bacterial cell division protein FtsZ have been designed and synthesized. The design is based on the X-ray cocrystal structure of P. aeruginosa FtsZ:SulA. Fast Rigid Exhaustive Docking (FRED) was employed to select compounds that can mimic the key interacting residues. Bicyclic oxazolidinones 1a-d were selected for further study and synthesized from a key bicyclic aziridine intermediate, which is synthesized from a readily available unsaturated aldehyde and amides derived from α-amino acids.
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Affiliation(s)
- Nohemy A Sorto
- Department of Chemistry, One Shields Ave, University of California, Davis, California 95616, USA
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35
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36
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Wu D, Forsyth CJ. Syntheses of the C1-C14 and C15-C25 fragments of amphidinolide C. Org Lett 2013; 15:1178-81. [PMID: 23441846 DOI: 10.1021/ol303515h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Divergent syntheses of the C1-C14 and C15-C25 fragments of amphidinolide C have been achieved. The synthesis of the C15-C25 fragment featured cobalt-catalyzed modified Mukaiyama aerobic alkenol cyclization and sulfur-directed regiocontrolled Wacker oxidation of an internal alkene. The C1-C14 fragment was established by alkenyllithium addition to an aldehyde followed by a challenging olefination of a highly inert C9 ketone.
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Affiliation(s)
- Dimao Wu
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
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37
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Synthesis of Functionalized Bicyclic IminesviaIntramolecular Azide-Alkene 1,3-Dipolar Cycloaddition/Intramolecular Stork Alkylation Cascade Reaction. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Hayashi K, Tanimoto H, Zhang H, Morimoto T, Nishiyama Y, Kakiuchi K. Efficient Synthesis of α,β-Unsaturated Alkylimines Performed with Allyl Cations and Azides: Application to the Synthesis of an Ant Venom Alkaloid. Org Lett 2012; 14:5728-31. [DOI: 10.1021/ol302608q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kyohei Hayashi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Hiroki Tanimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Huan Zhang
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Tsumoru Morimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Yasuhiro Nishiyama
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
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39
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de Miguel I, Velado M, Herradón B, Mann E. First Total Synthesis of the Pyrrolizidine Alkaloid Amphorogynine C through Intramolecular Azide-Olefin Cycloaddition. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200384] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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de Miguel I, Herradón B, Mann E. Intramolecular Azide-Alkene 1,3-Dipolar Cycloaddition/Enamine Addition(s) Cascade Reaction: Synthesis of Nitrogen-Containing Heterocycles. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Ajay A, Gupt MP, Devender N, Tripathi RP. Accessing a small library of pluripotent 1,4,5-trisubstituted 1H-1,2,3-triazoles via diversity-oriented synthesis. Mol Divers 2012; 16:335-50. [DOI: 10.1007/s11030-012-9369-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Accepted: 03/16/2012] [Indexed: 11/30/2022]
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42
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Dürüst Y, Karakuş H, Kaiser M, Tasdemir D. Synthesis and anti-protozoal activity of novel dihydropyrrolo[3,4-d][1,2,3]triazoles. Eur J Med Chem 2011; 48:296-304. [PMID: 22217867 DOI: 10.1016/j.ejmech.2011.12.028] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 11/05/2011] [Accepted: 12/20/2011] [Indexed: 10/14/2022]
Abstract
1,2,4-Oxadiazole and 1,2,3-triazole containing heterocyclic compounds continue to gain interest in synthesis of chemical entities and exhibit various biological activities as anti-protozoal and anti-cancer agents. By using the principle of bioisosterism, a series of novel oxadiazolyl pyrrolo triazole diones; namely, (3aS,6aR)-1-((3-(4-substituted phenyl)-1,2,4-oxadiazol-5-yl)methyl)-5-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3] triazole-4,6(3aH,5H)-diones (5a-k) was designed and synthesized by the 1,3-dipolar cycloaddition reaction of novel 5-azidomethyl 3-aryl substituted 1,2,4-oxadiazoles (4a-k) with N-phenyl maleimide. The structures of all the cycloadducts were elucidated by means of spectroscopic methods and physical characteristics. The in vitro anti-protozoal and cytotoxic activities of these novel heterocyclic compounds were investigated.
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Affiliation(s)
- Yaşar Dürüst
- Department of Chemistry, Abant İzzet Baysal University, TR-14280 Bolu, Turkey.
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43
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Damiron D, Okhay N, Akhrass SA, Cassagnau P, Drockenmuller E. Crosslinked PDMS elastomers and coatings from the thermal curing of vinyl-functionalized PDMS and a diazide aliphatic crosslinker. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24991] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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44
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Wang T, Liang Y, Yu ZX. Density functional theory study of the mechanism and origins of stereoselectivity in the asymmetric Simmons-Smith cyclopropanation with Charette chiral dioxaborolane ligand. J Am Chem Soc 2011; 133:9343-53. [PMID: 21627114 DOI: 10.1021/ja111330z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Asymmetric Simmons-Smith reaction using Charette chiral dioxaborolane ligand is a widely applied method for the construction of enantiomerically enriched cyclopropanes. The detailed mechanism and the origins of stereoselectivity of this important reaction were investigated using density functional theory (DFT) calculations. Our computational studies suggest that, in the traditional Simmons-Smith reaction conditions, the monomeric iodomethylzinc allyloxide generated in situ from the allylic alcohol and the zinc reagent has a strong tendency to form a dimer or a tetramer. The tetramer can easily undergo an intramolecular cyclopropanation to give the racemic cyclopropane product. However, when a stoichiometric amount of Charette chiral dioxaborolane ligand is employed, monomeric iodomethylzinc allyloxide is converted into an energetically more stable four-coordinated chiral zinc/ligand complex. The chiral complex has the zinc bonded to the CH(2)I group and coordinated by three oxygen atoms (one from the allylic alcohol and the other two oxygen atoms from the carbonyl oxygen and the ether oxygen in the dioxaborolane ligand), and it can undergo the cyclopropanation reaction easily. Three key factors influencing the enantioselectivity have been identified through examining the cyclopropanation transition states: (1) the torsional strain along the forming C-C bond, (2) the 1,3-allylic strain caused by the chain conformation, and (3) the ring strain generated in the transition states. In addition, the origin of the high anti diastereoselectivity for the substituent on the zinc reagent and the hydroxymethyl group of the allylic alcohol has been rationalized through analyzing the steric repulsion and the ring strain in the cyclopropanation transition states.
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Affiliation(s)
- Tao Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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45
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Huh CW, Schroeder C, Singh G, Aubé J. Stereoselectivity in Nucleophilic Additions to 3-Azidoalkanals. J Org Chem 2011; 76:3160-5. [DOI: 10.1021/jo102597d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chan Woo Huh
- The University of Kansas Chemical Methodologies and Library Development Center, 2034 Becker Dr., Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Chad Schroeder
- Department of Medicinal Chemistry, 1251 Wescoe Hall Drive, Malott Hall, Room 4070, University of Kansas, Lawrence, Kansas 66045, United States
| | - Gurpreet Singh
- Department of Medicinal Chemistry, 1251 Wescoe Hall Drive, Malott Hall, Room 4070, University of Kansas, Lawrence, Kansas 66045, United States
| | - Jeffrey Aubé
- The University of Kansas Chemical Methodologies and Library Development Center, 2034 Becker Dr., Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
- Department of Medicinal Chemistry, 1251 Wescoe Hall Drive, Malott Hall, Room 4070, University of Kansas, Lawrence, Kansas 66045, United States
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46
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John Pal AP, Kadigachalam P, Mallick A, Doddi VR, Vankar YD. Synthesis of sugar-derived spiroaminals via lactamization and metathesis reactions. Org Biomol Chem 2011; 9:809-19. [DOI: 10.1039/c0ob00555j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Schnabel C, Sterz K, Müller H, Rehbein J, Wiese M, Hiersemann M. Total Synthesis of Natural and Non-Natural Δ5,6Δ12,13-Jatrophane Diterpenes and Their Evaluation as MDR Modulators. J Org Chem 2010; 76:512-22. [DOI: 10.1021/jo1019738] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christoph Schnabel
- Technische Universität Dortmund, Fakultät Chemie, D-44227 Dortmund, Germany
| | - Katja Sterz
- Universität Bonn, Pharmazeutisches Institut, Pharmazeutische Chemie II, D-53121 Bonn, Germany
| | - Henrik Müller
- Universität Bonn, Pharmazeutisches Institut, Pharmazeutische Chemie II, D-53121 Bonn, Germany
| | - Julia Rehbein
- Technische Universität Dortmund, Fakultät Chemie, D-44227 Dortmund, Germany
| | - Michael Wiese
- Universität Bonn, Pharmazeutisches Institut, Pharmazeutische Chemie II, D-53121 Bonn, Germany
| | - Martin Hiersemann
- Technische Universität Dortmund, Fakultät Chemie, D-44227 Dortmund, Germany
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48
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Bowen EG, Wardrop DJ. Diastereoselective nitrenium ion-mediated cyclofunctionalization: total synthesis of (+)-castanospermine. Org Lett 2010; 12:5330-3. [PMID: 20964285 DOI: 10.1021/ol102371x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The asymmetric total synthesis of the α-glucosidase inhibitor (+)-castanospermine is reported. The central theme in our approach to this polyhydroxylated alkaloid is the simultaneous generation of the piperidine ring and the C-1/8a erythro stereodiad through the diastereoselective, oxamidation of an unsaturated O-alkyl hydroxamate. This process is believed to proceed sequentially via singlet acylnitrenium and aziridinium ion intermediates.
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Affiliation(s)
- Edward G Bowen
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
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Singh N, Pandey SK, Tripathi RP. Regioselective [3+2] cycloaddition of chalcones with a sugar azide: easy access to 1-(5-deoxy-D-xylofuranos-5-yl)-4,5-disubstituted-1H-1,2,3-triazoles. Carbohydr Res 2010; 345:1641-8. [PMID: 20579636 DOI: 10.1016/j.carres.2010.04.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2010] [Revised: 04/15/2010] [Accepted: 04/21/2010] [Indexed: 11/18/2022]
Abstract
[3+2] Cycloaddition of 5-azido-5-deoxy-1,2-O-isopropylidene-alpha-d-xylofuranose with 1,3-diphenyl-prop-3-enones, followed by oxidation of the intermediate triazolines in a tandem manner, led to the regioselective formation of 4-benzoyl-1-(5-deoxy-1,2-O-isopropylidene-alpha-d-xylofuranos-5-yl)-5-phenyl-1H-1,2,3-triazoles in moderate to good yields.
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Affiliation(s)
- Nimisha Singh
- Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow 226 001, CSIR, India
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de la Sovera V, Bellomo A, Pena JM, Gonzalez D, Stefani HA. Expanding cyclitol structural diversity by biocatalysis and metalocatalysis. A click chemistry approach. Mol Divers 2010; 15:163-72. [DOI: 10.1007/s11030-010-9237-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Accepted: 01/25/2010] [Indexed: 10/19/2022]
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