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Novel intramolecular aminohydroxylation toward the syntheses of 2′-amino-2′-ethynyl nucleosides. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lemaire S, Diène C, Gavryushin A, Du Jourdin XM, Paolini L, Jusseau X, Knochel P, Farina V. Preparation of 2'-Deoxy-2'-spirocyclopropylcytidine via an Alternative Cyclopropanation Reaction. J Org Chem 2019; 84:4910-4914. [PMID: 30721067 DOI: 10.1021/acs.joc.8b02784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein we report the preparation of 2'-deoxy-2'-spirocyclopropylcytidine via an alternative cyclopropanation reaction starting from γ-silyl tertiary alcohols. Activation of the hydroxyl function with thionyl chloride in the presence of 4-DMAP allows the ring-closing step under mild conditions. Participation of the uracil moiety in the cyclization step is proposed.
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Affiliation(s)
- Sébastien Lemaire
- Janssen Pharmaceutical Companies of Johnson & Johnson , Small Molecule Pharmaceutical Development , Turnhoutseweg 30 , 2340 Beerse , Belgium
| | - Coura Diène
- Department of Chemistry , Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, Building F , D-81377 Munich , Germany
| | - Andrei Gavryushin
- Department of Chemistry , Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, Building F , D-81377 Munich , Germany
| | - Xavier Mollat Du Jourdin
- Department of Chemistry , Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, Building F , D-81377 Munich , Germany
| | - Léa Paolini
- Janssen Pharmaceutical Companies of Johnson & Johnson , Small Molecule Pharmaceutical Development , Turnhoutseweg 30 , 2340 Beerse , Belgium
| | - Xavier Jusseau
- Janssen Pharmaceutical Companies of Johnson & Johnson , Small Molecule Pharmaceutical Development , Turnhoutseweg 30 , 2340 Beerse , Belgium
| | - Paul Knochel
- Department of Chemistry , Ludwig-Maximilians-Universität , Butenandtstrasse 5-13, Building F , D-81377 Munich , Germany
| | - Vittorio Farina
- Janssen Pharmaceutical Companies of Johnson & Johnson , Small Molecule Pharmaceutical Development , Turnhoutseweg 30 , 2340 Beerse , Belgium
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