101
|
1,3-Dipolar cycloaddition of nitrone-type dipoles to uncomplexed and metal-bound substrates bearing the CN triple bond. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.07.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
102
|
Ananikov VP, Gordeev EG. Novel [4 + 2] cycloaddition reactions of alkyne and enyne key-units: Direct access to bicyclic aromatic and heteroaromatic products. A theoretical mechanistic study. Chem Sci 2011. [DOI: 10.1039/c1sc00380a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
103
|
Mei Q, Yang J, Peng Y, Zhao Z. Synthesis and Characterisation of Novel 1,3-Bis{(6-Aryl-1,2,4-Triazolo [3,4-b][1,3,4]Thiadiazol-3-yl)-Methoxy}benzenes under Microwave Irradiation. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13097969919696] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Eleven novel 1,3-bis{(6-aryl-1,2,4-triazolo[3,4-b][1,3,4]thiadiazol-3-yl)-methoxy}benzenes have been synthesised in high yields by the condensation of 5,5'-[1,3-phenylene-bis(oxymethylene)]bis(4-amino-3-mercapto-1,2,4-triazole) with substituted benzoic acids in the presence of phosphorus oxychloride under microwave irradiation. Compared with the conventional heating method, this method is facile, rapid and efficient. The structures of all new compounds were characterised by 1H NMR, IR, MS and elemental analysis.
Collapse
Affiliation(s)
- Qinggang Mei
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Jie Yang
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Yongle Peng
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Zhigang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| |
Collapse
|
104
|
Computational and experimental studies into NMR characterization of [2+2] cycloaddition products of norbornene. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.05.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
105
|
Dehn S, Chapman R, Jolliffe KA, Perrier S. Synthetic Strategies for the Design of Peptide/Polymer Conjugates. POLYM REV 2011. [DOI: 10.1080/15583724.2011.566404] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
106
|
Pötzsch R, Fleischmann S, Tock C, Komber H, Voit BI. Combining RAFT and Staudinger Ligation: A Potentially New Synthetic Tool for Bioconjugate Formation. Macromolecules 2011. [DOI: 10.1021/ma2000724] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Robert Pötzsch
- Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069 Dresden, Germany
| | - Sven Fleischmann
- Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069 Dresden, Germany
| | - Christian Tock
- Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069 Dresden, Germany
| | - Hartmut Komber
- Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069 Dresden, Germany
| | - Brigitte I. Voit
- Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069 Dresden, Germany
| |
Collapse
|
107
|
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.
Collapse
Affiliation(s)
- Takeshi Yamada
- Drug Discovery, Alnylam Pharmaceuticals, Cambridge, Massachusetts 02142, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
108
|
Domino Diels–Alder reactions of N-methoxyethyl-7-oxa-norbornadiene-2,3-dicarboximide: an elusive, highly reactive dienophile. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
109
|
Modha SG, Trivedi JC, Mehta VP, Ermolat’ev DS, Van der Eycken EV. An Expeditious Route toward Pyrazine-Containing Nucleoside Analogues. J Org Chem 2011; 76:846-56. [DOI: 10.1021/jo102089h] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sachin G. Modha
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Jalpa C. Trivedi
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Vaibhav P. Mehta
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Denis S. Ermolat’ev
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| |
Collapse
|
110
|
Yuan Y, Michinobu T, Ashizawa M, Mori T. Microwave-assisted TCNE/TCNQ addition to poly(thienyleneethynylene) derivative for construction of donor-acceptor chromophores. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24515] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
111
|
Mehta VP, Van der Eycken EV. Microwave-assisted C–C bond forming cross-coupling reactions: an overview. Chem Soc Rev 2011; 40:4925-36. [DOI: 10.1039/c1cs15094d] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
112
|
Megia-Fernandez A, Ortega-Muñoz M, Lopez-Jaramillo J, Hernandez-Mateo F, Santoyo-Gonzalez F. Non-Magnetic and Magnetic Supported Copper(I) Chelating Adsorbents as Efficient Heterogeneous Catalysts and Copper Scavengers for Click Chemistry. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000530] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
113
|
Friscourt F, Boons GJ. One-pot three-step synthesis of 1,2,3-triazoles by copper-catalyzed cycloaddition of azides with alkynes formed by a Sonogashira cross-coupling and desilylation. Org Lett 2010; 12:4936-9. [PMID: 20942390 PMCID: PMC2966525 DOI: 10.1021/ol1022036] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A microwave-assisted, one-pot, three-step Sonogashira cross-coupling-desilylation-cycloaddition sequence was developed for the convenient preparation of 1,4-disubstituted 1,2,3-triazoles starting from a range of halides, acyl chlorides, ethynyltrimethylsilane, and azides.
Collapse
Affiliation(s)
- Frédéric Friscourt
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens,GA 30602 USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens,GA 30602 USA
| |
Collapse
|
114
|
Johnstone MD, Lowe AJ, Henderson LC, Pfeffer FM. Rapid synthesis of cyclobutene diesters using a microwave-accelerated ruthenium-catalysed [2+2] cycloaddition. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.08.119] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
115
|
Zhao ZG, Liu XL, Chen Y, Shi ZC. One-pot Synthesis of New Carbamate-Type Molecular Tweezers Derived from Deoxycholic Acid under Microwave Irradiation. JOURNAL OF CHEMICAL RESEARCH 2010. [DOI: 10.3184/030823410x12812894581758] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A rapid, safe, and efficient method for the preparation of new carbamate type molecular tweezers based on deoxycholic acid was reported. Eleven new molecular tweezers have been synthesised in good yield(91–96%). The structures of these receptors were confirmed by 1H NMR, IR, MS spectra and elemental analysis. These molecular tweezers not only recognised neutral molecules, but also showed good enantioselectivity for D-amino acid methyl esters.
Collapse
Affiliation(s)
- Zhi-Gang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationnalities, Chengdu 610041, P. R. China
| | - Xing-Li Liu
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationnalities, Chengdu 610041, P. R. China
| | - Yu Chen
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationnalities, Chengdu 610041, P. R. China
| | - Zhi-Chuan Shi
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationnalities, Chengdu 610041, P. R. China
| |
Collapse
|
116
|
Patil NT, Mutyala AK, Lakshmi PGVV, Gajula B, Sridhar B, Pottireddygari GR, Rao TP. Au(I)-Catalyzed Cascade Reaction Involving Formal Double Hydroamination of Alkynes Bearing Tethered Carboxylic Groups: An Easy Access to Fused Dihydrobenzimidazoles and Tetrahydroquinazolines. J Org Chem 2010; 75:5963-75. [DOI: 10.1021/jo1013228] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
117
|
Patil NT, Lakshmi PGVV, Singh V. AuI-Catalyzed Direct Hydroamination/Hydroarylation and Double Hydroamination of Terminal Alkynes. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000389] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
118
|
Ma R, Zhu J, Liu J, Chen L, Shen X, Jiang H, Li J. Microwave-assisted one-pot synthesis of pyrazolone derivatives under solvent-free conditions. Molecules 2010; 15:3593-601. [PMID: 20657501 PMCID: PMC6263256 DOI: 10.3390/molecules15053593] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 05/10/2010] [Accepted: 05/13/2010] [Indexed: 11/16/2022] Open
Abstract
An efficient one-pot method to generate structurally diverse and medicinally interesting pyrazolone derivatives in good to excellent yields of 51–98% under microwave irradiation and solvent-free conditions has been developed.
Collapse
Affiliation(s)
- Ruoqun Ma
- School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jin Zhu
- School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jie Liu
- School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Lili Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- Author to whom correspondence should be addressed. E-Mails: (J.L.); (L.L.C.)
| | - Xu Shen
- School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Hualiang Jiang
- School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Jian Li
- School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- Author to whom correspondence should be addressed. E-Mails: (J.L.); (L.L.C.)
| |
Collapse
|
119
|
Patil NT, Kavthe RD, Shinde VS, Sridhar B. Pt(IV)-Catalyzed Hydroamination Triggered Cyclization: A Strategy to Fused Pyrrolo[1,2-a]quinoxalines, Indolo[1,2-a]quinoxalines, and Indolo[3,2-c]quinolines. J Org Chem 2010; 75:3371-80. [DOI: 10.1021/jo100373w] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
120
|
Campo VL, Carvalho I, Da Silva CHTP, Schenkman S, Hill L, Nepogodiev SA, Field RA. Cyclooligomerisation of azido-alkyne-functionalised sugars: synthesis of 1,6-linked cyclic pseudo-galactooligosaccharides and assessment of their sialylation by Trypanosoma cruzi trans-sialidase. Chem Sci 2010. [DOI: 10.1039/c0sc00301h] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
|