A convergent and enantioselective synthesis of fortucine was achieved from the starting materials tyrosine methyl ester and 3-hydroxy-4-methoxybenzaldehyde. The synthesis is based on two key steps mediated by a hypervalent iodine reagent. This work has enabled us to reassign the absolute configuration of the natural product reported in the literature.
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Total synthesis of natural products using hypervalent iodine reagents.
Front Chem
January 2015
Laboratoire de Méthodologie et Synthèse de Produits Naturels, Département de Chimie, Université du Québec à Montréal Montréal, QC, Canada.
We present a review of natural product syntheses accomplished in our laboratory during the last 5 years. Each synthetic route features a phenol dearomatization promoted by an environmentally benign hypervalent iodine reagent. The dearomatizations demonstrate the "aromatic ring umpolung" concept, and involve stereoselective remodeling of the inert unsaturations of a phenol into a highly functionalized key intermediate that may contain a quaternary carbon center and a prochiral dienone system.
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Département de chimie, Université du Québec à Montréal, Laboratoire de Méthodologie et Synthèse de Produits Naturels, C.P.8888, Succ. Centre-Ville, Montréal, QC, H3C 3P8 (Canada), Fax: (+1) 514-987-4054.
A convergent and enantioselective synthesis of fortucine was achieved from the starting materials tyrosine methyl ester and 3-hydroxy-4-methoxybenzaldehyde. The synthesis is based on two key steps mediated by a hypervalent iodine reagent. This work has enabled us to reassign the absolute configuration of the natural product reported in the literature.
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