1,3-Dipolar cycloadditions of 2-deoxy-D-ribose-derived L-threo five-membered cyclic nitrone to alpha,beta-unsaturated gamma- and delta-lactones were investigated. Cycloadducts obtained from d-lactones, after N-O bond cleavage, opening of the lactone ring, and protection of hydroxyl groups were subjected to beta-lactam ring formation by using Mukaiyama's salt. Cycloadducts from gamma-lactones subjected to the same reaction sequence undergo beta-elimination of a water molecule to provide pyrrolidine-substituted unsaturated gamma-lactones. (C) 2016 Elsevier Ltd. All rights reserved.
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Le Mans Univ, Inst Mol & Mat Mans, Ave O Messiaen, F-72085 Le Mans 9, France
CNRS UMR 6283, Ave O Messiaen, F-72085 Le Mans 9, FranceLe Mans Univ, Inst Mol & Mat Mans, Ave O Messiaen, F-72085 Le Mans 9, France
Rouzier, Florian
Sille, Rosanne
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CNRS UMR 6283, Ave O Messiaen, F-72085 Le Mans 9, FranceLe Mans Univ, Inst Mol & Mat Mans, Ave O Messiaen, F-72085 Le Mans 9, France
Sille, Rosanne
Montiege, Ophelie
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CNRS UMR 6283, Ave O Messiaen, F-72085 Le Mans 9, FranceLe Mans Univ, Inst Mol & Mat Mans, Ave O Messiaen, F-72085 Le Mans 9, France
Montiege, Ophelie
Tessier, Arnaud
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Univ Nantes, CEISAM, 2 Rue Houssiniere, F-44322 Nantes 3, France
CNRS UMR 6220, 2 Rue Houssiniere, F-44322 Nantes 3, FranceLe Mans Univ, Inst Mol & Mat Mans, Ave O Messiaen, F-72085 Le Mans 9, France
Tessier, Arnaud
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Pipelier, Muriel
Dujardin, Gilles
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CNRS UMR 6283, Ave O Messiaen, F-72085 Le Mans 9, FranceLe Mans Univ, Inst Mol & Mat Mans, Ave O Messiaen, F-72085 Le Mans 9, France
Dujardin, Gilles
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Guillarme, Stephane
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