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Wang YJ, Zhao LM. Synthesis of 10-Membered Azecines through Pd-Catalyzed Formal [6+4] Cycloaddition and Their Transannular Reaction to Polycyclic Compounds. Chemistry 2023; 29:e202302111. [PMID: 37776147 DOI: 10.1002/chem.202302111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/17/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
Azecine fragments are frequently presented in natural products and bioactive compounds. However, minor efforts have been devoted to these 10-membered N-heterocycles, and their synthesis is still challenging. Reported herein is the first catalytic formal [6+4] cycloaddition for the synthesis of 10-membered azecines. Under palladium catalysis, the reaction of δ-vinylvalerolactones and benzofuran-derived azadienes proceeds smoothly to afford benzofuran-fused azecines with high diastereoselectivity in moderate to good yields. A unique transannular reaction of these 10-membered azecines for the construction of polycyclic compounds is also demonstrated.
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Affiliation(s)
- Yu-Jiao Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
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2
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Morales-Sierra S, Luis JC, Jiménez-Arias D, Rancel-Rodríguez NM, Coego A, Rodriguez PL, Cueto M, Borges AA. Biostimulant activity of Galaxaura rugosa seaweed extracts against water deficit stress in tomato seedlings involves activation of ABA signaling. FRONTIERS IN PLANT SCIENCE 2023; 14:1251442. [PMID: 37780510 PMCID: PMC10538540 DOI: 10.3389/fpls.2023.1251442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 08/14/2023] [Indexed: 10/03/2023]
Abstract
Water scarcity is a serious constraint for agriculture, and global warming and climate change can exacerbate it in many areas. Therefore, sustainable approaches must be implemented to deal with current and future water scarcity scenarios. Genetic and chemical approaches are being applied to manage this limitation and maintain crop yields. In particular, biostimulants obtained from natural sources such as marine algae are promising aids for coping with water deficit stress in agriculture. Here we present a bioprospection study of extracts of the macroalgae Bonnemaisonia hamifera, Galaxaura rugosa, Dasycladus vermicularis, Ulva clathrata, Cystoseira foeniculacea, Cystoseira humilis, Lobophora dagamae, Colpomenia sinuosa and Halopteris scoparia from the north coast of Tenerife, in the Canary Islands. The aqueous extracts of Bonnemaisonia hamifera, Galaxaura rugosa, Dasycladus vermicularis and Cystoseira humilis show biostimulant activity against water deficit stress in tomato seedlings under controlled conditions, providing higher tolerance than the mock-treated control. The Galaxaura rugosa extract showed the highest biostimulant activity against water deficit stress. We demonstrate that this positive effect involves the activation of the abscisic acid (ABA) pathway in Arabidopsis thaliana (arabidopsis) and Solanum lycopersicum (tomato). Application of G. rugosa extract to the root system by drenching tomato seedlings subjected to water deficit leads to improved CO2 assimilation and water use efficiency (WUEp), compared to mock-treated plants. These results highlight a new potential seaweed source of substances with osmoprotectant properties, useful for biostimulant development. Future studies may provide further insight into which components of the seaweed extract induce activation of the ABA pathway.
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Affiliation(s)
- Sarai Morales-Sierra
- Grupo de Biología Vegetal Aplicada (GBVA), Departamento de Botánica, Ecología y Fisiología Vegetal, Facultad de Farmacia Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - Juan Cristo Luis
- Grupo de Biología Vegetal Aplicada (GBVA), Departamento de Botánica, Ecología y Fisiología Vegetal, Facultad de Farmacia Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - David Jiménez-Arias
- Departamento de Producción Vegetal en Zonas Tropicales y Subtropicales, Instituto Canario de Investigaciones Agrarias (ICIA), La Laguna, Tenerife, Spain
| | - Nereida M. Rancel-Rodríguez
- Grupo BotMar-ULL, Departamento de Botánica, Ecología y Fisiología Vegetal, Facultad de Farmacia Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - Alberto Coego
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, Valencia, Spain
| | - Pedro L. Rodriguez
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, Valencia, Spain
| | - Mercedes Cueto
- Departamento de Ciencias de la Vida y de la Tierra, Departamento de Productos Naturales y Sintéticos Bioactivos, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), La Laguna, Tenerife, Spain
| | - Andrés A. Borges
- Departamento de Ciencias de la Vida y de la Tierra, Departamento de Productos Naturales y Sintéticos Bioactivos, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), La Laguna, Tenerife, Spain
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3
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Liu S, Girolami GS. Microscale vacuum distillation apparatus for high-boiling, air- and heat-sensitive liquids. Talanta 2021; 223:121747. [PMID: 33298271 DOI: 10.1016/j.talanta.2020.121747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/04/2020] [Accepted: 10/05/2020] [Indexed: 10/23/2022]
Abstract
We describe a simple apparatus that enables the vacuum distillation of ~0.2 mL of air- and water-sensitive, high-boiling liquids. The apparatus should be useful in teaching laboratories, and also to practicing chemists.
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Affiliation(s)
- Sumeng Liu
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Gregory S Girolami
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA.
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Mohite AR, Phatake RS, Dubey P, Agbaria M, Shames AI, Lemcoff NG, Reany O. Thiourea-Mediated Halogenation of Alcohols. J Org Chem 2020; 85:12901-12911. [DOI: 10.1021/acs.joc.0c01431] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Amar R. Mohite
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ravindra S. Phatake
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Pooja Dubey
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Mohamed Agbaria
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Alexander I. Shames
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - N. Gabriel Lemcoff
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ofer Reany
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
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5
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Yu C, Lv Z, Xu S, Zhang J. A convenient synthesis of ( E )-conjugated polyene sulfonyl derivatives with excellent stereospecificity. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Cruz CM, Ortega-Muñoz M, López-Jaramillo FJ, Hernández-Mateo F, Blanco V, Santoyo-González F. Vinyl Sulfonates: A Click Function for Coupling-and-Decoupling Chemistry and their Applications. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600628] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Carlos M. Cruz
- Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | - Mariano Ortega-Muñoz
- Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | | | - Fernando Hernández-Mateo
- Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | - Victor Blanco
- Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
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Hatano M, Ozaki T, Nishikawa K, Ishihara K. Synthesis of Optically Pure 3,3′-Diaryl Binaphthyl Disulfonic Acids via Stepwise N–S Bond Cleavage. J Org Chem 2013; 78:10405-13. [DOI: 10.1021/jo401848z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Manabu Hatano
- Graduate
School of Engineering, Nagoya University, and ‡Japan Science
and Technology Agency (JST), CREST, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Takuya Ozaki
- Graduate
School of Engineering, Nagoya University, and ‡Japan Science
and Technology Agency (JST), CREST, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Keisuke Nishikawa
- Graduate
School of Engineering, Nagoya University, and ‡Japan Science
and Technology Agency (JST), CREST, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Kazuaki Ishihara
- Graduate
School of Engineering, Nagoya University, and ‡Japan Science
and Technology Agency (JST), CREST, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
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Mori H, Saito Y, Takahashi E, Nakabayashi K, Onuma A, Morishima M. Synthesis of sulfonated organic–inorganic hybrids through the radical copolymerization of vinyl sulfonate esters and vinyl trialkoxysilanes. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Mori H, Saito Y, Takahashi E, Nakabayashi K, Onuma A, Morishima M. Controlled synthesis of sulfonated block copolymers having thermoresponsive property by RAFT polymerization of vinyl sulfonate esters. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.06.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Yamada T, Peng CG, Matsuda S, Addepalli H, Jayaprakash KN, Alam MR, Mills K, Maier MA, Charisse K, Sekine M, Manoharan M, Rajeev KG. Versatile site-specific conjugation of small molecules to siRNA using click chemistry. J Org Chem 2011; 76:1198-211. [PMID: 21299239 DOI: 10.1021/jo101761g] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We have previously demonstrated that conjugation of small molecule ligands to small interfering RNAs (siRNAs) and anti-microRNAs results in functional siRNAs and antagomirs in vivo. Here we report on the development of an efficient chemical strategy to make oligoribonucleotide-ligand conjugates using the copper-catalyzed azide-alkyne cycloaddition (CuAAC) or click reaction. Three click reaction approaches were evaluated for their feasibility and suitability for high-throughput synthesis: the CuAAC reaction at the monomer level prior to oligonucleotide synthesis, the solution-phase postsynthetic "click conjugation", and the "click conjugation" on an immobilized and completely protected alkyne-oligonucleotide scaffold. Nucleosides bearing 5'-alkyne moieties were used for conjugation to the 5'-end of the oligonucleotide. Previously described 2'- and 3'-O-propargylated nucleosides were prepared to introduce the alkyne moiety to the 3' and 5' termini and to the internal positions of the scaffold. Azido-functionalized ligands bearing lipophilic long chain alkyls, cholesterol, oligoamine, and carbohydrate were utilized to study the effect of physicochemical characteristics of the incoming azide on click conjugation to the alkyne-oligonucleotide scaffold in solution and on immobilized solid support. We found that microwave-assisted click conjugation of azido-functionalized ligands to a fully protected solid-support bound alkyne-oligonucleotide prior to deprotection was the most efficient "click conjugation" strategy for site-specific, high-throughput oligonucleotide conjugate synthesis tested. The siRNA conjugates synthesized using this approach effectively silenced expression of a luciferase gene in a stably transformed HeLa cell line.
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Affiliation(s)
- Takeshi Yamada
- Drug Discovery, Alnylam Pharmaceuticals, Cambridge, Massachusetts 02142, USA
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Mori H, Kudo E, Saito Y, Onuma A, Morishima M. RAFT Polymerization of Vinyl Sulfonate Esters for the Controlled Synthesis of Poly(lithium vinyl sulfonate) and Sulfonated Block Copolymers. Macromolecules 2010. [DOI: 10.1021/ma100905w] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hideharu Mori
- Department of Polymer Science and Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Eisuke Kudo
- Department of Polymer Science and Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Yousuke Saito
- Department of Polymer Science and Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Atsuhiko Onuma
- Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika, Hitachi 319-1292, Japan
| | - Makoto Morishima
- Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika, Hitachi 319-1292, Japan
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12
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Seeberger S, Griffin RJ, Hardcastle IR, Golding BT. A new strategy for the synthesis of taurine derivatives using the ‘safety-catch’ principle for the protection of sulfonic acids. Org Biomol Chem 2007; 5:132-8. [PMID: 17164917 DOI: 10.1039/b614333d] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The safety-catch principle has been applied for the development of a new method for protecting sulfonic acids. 2,2-Dimethylsuccinic acid was reduced to 2,2-dimethylbutane-1,4-diol, which was selectively silylated to give 4-(tert-butyldiphenylsilanyloxy)-2,2-dimethylbutan-1-ol. Reaction of the latter compound with 2-chloroethanesulfonyl chloride in the presence of triethylamine afforded 4-(tert-butyldiphenylsilyloxy)-2,2-dimethylbutyl ethenesulfonate directly. The ethenesulfonate underwent Michael-type addition with secondary amines to give protected derivatives of taurine (2-aminoethanesulfonic acid). Deprotection was achieved on treatment with tetrabutylammonium fluoride, whereby cleavage of the silicon-oxygen bond led to an intermediate alkoxide that immediately cyclised to 2,2-dimethyltetrahydrofuran with liberation of a sulfonate. Pure sulfonic acids were obtained from the crude product by ion exchange chromatography on a strongly basic resin, which was eluted with aqueous acetic acid. The method developed should be generally applicable to the protection of sulfonic acids and is amenable to a multiparallel format.
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Affiliation(s)
- Sonja Seeberger
- Northern Institute for Cancer Research, School of Natural Sciences-Chemistry, Bedson Building, University of Newcastle upon Tyne, Newcastle upon Tyne, United Kingdom
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13
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Tsivgoulis GM, Sotiropoulos DN, Ioannou PV. ON THE BEHAVIOUR OF SULFONATES TOWARDS AS(III) NUCLEOPHILES. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426509808033725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Krishnan S, Schreiber SL. Syntheses of Stereochemically Diverse Nine-Membered Ring-Containing Biaryls. Org Lett 2004; 6:4021-4. [PMID: 15496089 DOI: 10.1021/ol048273c] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A library of nine-membered, biaryl-containing rings has been synthesized in parallel on polystyrene macrobeads. Dimeric medium rings were shown to be accessible via a regio- and stereoselective double cyclization.
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Affiliation(s)
- Shyam Krishnan
- Department of Chemistry and Chemical Biology, Howard Hughes Medical Institute, Harvard University, and the Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02138, USA
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15
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Gauthier M, Carrozzella T, Penlidis A. Sulfobetaine zwitterionomers based onn-butyl acrylate and 2-ethoxyethyl acrylate: Monomer synthesis and copolymerization behavior. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/pola.10138] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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King JF, Gill MS. Reaktionen von Neopentyl-2,2,2-trifluorethan-sulfonat (Neopentyltresylat) mit Nucleophilen: Modellstudie zur Kupplung von Nucleophilen mit Tresylagarose. Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951071534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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King JF, Guo ZR, Lock JD. THE EFFECT OF LOCATING THE SULFONYL GROUP IN A FIVE-MEMBERED RING ON THE BALANCE OF ELIMINATION VS. SUBSTITUTION REACTIONS OF SULFONIC ACID DERIVATIVES. PHOSPHORUS SULFUR 1994. [DOI: 10.1080/10426509408020742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Brzezinski MR, Christian CD, Lin MF, Dean RA, Bosron WF, Harper ET. Convenient Synthesis of Benzoylecgonine Ethyl Ester, a Homolog of Cocaine. SYNTHETIC COMMUN 1992. [DOI: 10.1080/00397919208019293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Johnson JE, Arfan M, Hodzi R, Caswell LR, Rasmussen S. MECHANISMS OF PHOTOELIMINATION REACTIONS OF ALKYL BENZOHYDROXAMATES. Photochem Photobiol 1990. [DOI: 10.1111/j.1751-1097.1990.tb01694.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Kevill DN, Bahnke RW. Correlation of the rates of solvolysis of the 2-(2-adamantoxysulfonyl)-, , -trimethylethanaminium (2-adamantyl [2]betylate). Tetrahedron 1988. [DOI: 10.1016/s0040-4020(01)86248-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Ichikawa J, Sugimoto KI, Sonoda T, Kobayashi H. A Facile Method for the Fluorine Substitution of Phenylthio GroupviaSulfonium Salts Using Cesium Fluoride. CHEM LETT 1987. [DOI: 10.1246/cl.1987.1985] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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