title: tert-Butyl 3-oxo-2-oxa-5-aza-bicyclo-[2.2.1]heptane-5-carboxyl-ate.
abstract: The title compound, C(10)H(15)NO(4), also known as N-tert-butyl-oxycarbonyl-allohydr-oxy-l-proline lactone, is quite similar to N-acetyl-allohydr-oxy-l-proline lactone [Lenstra, Petit & Geise (1979 ▶). Cryst. Struct. Commun. 8, 1023-1029], whereby both carbonyl groups point roughly in the same direction because of the trans conformation of the peptide bond.
authors.forename: Marie-Charlotte
authors.initials: MC
authors.lastname: Lechner
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Aubert
authors.forename: Gilles
authors.initials: G
authors.lastname: Guichard
authors.forename: Claude
authors.initials: C
authors.lastname: Didierjean