title: Organocatalytic enantioselective synthesis of nitrogen-substituted dihydropyran-2-ones, a key synthetic intermediate of 1beta-methylcarbapenems.
abstract: Organocatalytic enantioselective cycloadditions providing nitrogen-substituted dihydropyran-2-ones were developed in two catalytic systems. The (3R,4R)-product was a versatile intermediate in the synthesis of 1beta-methylcarbapenem antibiotics.
authors: Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai 599-8531, Japan. koba@c.s.osakafu-u.ac.jp
authors: Shoji
authors: S
authors: Kobayashi
authors: Tatsuhiro
authors: T
authors: Kinoshita
authors: Hisatoshi
authors: H
authors: Uehara
authors: Tomoko
authors: T
authors: Sudo
authors: Ilhyong
authors: I
authors: Ryu