Reaction of sugar derived epoxy triflates 1 and 2 or epoxy ketoses 11 and 12 with ester or acid enolates followed by acid-catalyzed ring closure affords poly-substituted chiral butenolides in excellent yields.
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Univ Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, BrazilUniv Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil
dos Santos, Reginaldo Bezerra
Vettoraci Cesar, Roberta Cecilia
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Univ Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, BrazilUniv Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil
Vettoraci Cesar, Roberta Cecilia
Lacerda, Valdemar, Jr.
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Univ Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, BrazilUniv Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil
Lacerda, Valdemar, Jr.
Greco, Sandro Jose
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Univ Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, BrazilUniv Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil
Greco, Sandro Jose
Cunha Neto, Alvaro
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Univ Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, BrazilUniv Fed Espirito Santo, Centro Ciencias Exatas, Dept Quim, Avenida Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil