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Chiacchio U, Rescifina A, Saita MG, Iannazzo D, Romeo G, Mates JA, Tejero T, Merino P. Zinc(II) Triflate-Controlled 1,3-Dipolar Cycloadditions of C-(2-Thiazolyl)nitrones: Application to the Synthesis of a Novel Isoxazolidinyl Analogue of Tiazofurin. J Org Chem 2005; 70:8991-9001. [PMID: 16238338 DOI: 10.1021/jo051572a] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The cycloaddition reaction between C-(2-thiazolyl) nitrones and allylic alcohol takes place with complete exo selectivity when the reactions are carried out in the presence of 1 equiv of zinc triflate. The rate of the reaction is increased enormously under microwave irradiation. The use of a chiral dipolarophile allowed application of the methodology to the synthesis of a hitherto unknown enantiomerically pure isoxazolidinyl analogue of the C-nucleoside tiazofurin.
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Affiliation(s)
- Ugo Chiacchio
- Dipartimento di Scienze Chimiche, Università di Catania, Italy
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Dondoni A, Junquera F, Merchán FL, Merino P, Scherrmann MC, Tejero T. Stereoselective Addition of 2-Furyllithium and 2-Thiazolyllithium to Sugar Nitrones. Synthesis of Carbon-Linked Glycoglycines. J Org Chem 1997. [DOI: 10.1021/jo970290a] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alessandro Dondoni
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Ferrara, Italy, and Departamento de Química Orgánica, ICMA, Universidad de Zaragoza, Zaragoza, Spain
| | - Federico Junquera
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Ferrara, Italy, and Departamento de Química Orgánica, ICMA, Universidad de Zaragoza, Zaragoza, Spain
| | - Francisco Luis Merchán
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Ferrara, Italy, and Departamento de Química Orgánica, ICMA, Universidad de Zaragoza, Zaragoza, Spain
| | - Pedro Merino
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Ferrara, Italy, and Departamento de Química Orgánica, ICMA, Universidad de Zaragoza, Zaragoza, Spain
| | - Marie-Christine Scherrmann
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Ferrara, Italy, and Departamento de Química Orgánica, ICMA, Universidad de Zaragoza, Zaragoza, Spain
| | - Tomas Tejero
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Ferrara, Italy, and Departamento de Química Orgánica, ICMA, Universidad de Zaragoza, Zaragoza, Spain
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Merino P, Lanaspa A, Merchan FL, Tejero T. Stereoselective grignard reactions to α-amino nitrones. Synthesis of optically active α-aminohydroxylamines and 1,2-diamines. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s0957-4166(97)00250-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tejero T, Dondoni A, Rojo I, Merchán FL, Merino P. 1,3-Dipolar cycloaddition of C-(2-thiazolyl)nitrones to chiral acrylates. Synthesis of enantiopure α-amino-2-alkylthiazoles and 5-formylpyrrolidin-2-ones. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00040-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tejero T, Franco S, Junquera F, Lanaspa A, Merchán FL, Merino P, Rojo I. Absolute configuration determination in furfuryl amines and hydroxylamines by circular dichroism. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00173-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Merchán FL, Merino P, Rojo I, Tejero T, Dondoni A. Enantioselective addition of Grignard reagents to a 2-thiazolyl nitrone. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00060-2] [Citation(s) in RCA: 19] [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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