title: Crystal structure of 2-isopropyl-5,7'-dimethyl-1',3',3a',6',8a',8b'-hexa-hydro-spiro-[cyclo-hexane-1,6'-furo[3,4-d]imidazo[1,5-b]isoxazol]-8'(7'H)-one.
abstract: In the title compound, C17H28N2O3, the isoxazolidine ring adopts an envelope conformation with the O atom deviating from the mean plane of the other four ring atoms by 0.617 (1) Å. In the crystal, mol-ecules are linked via weak C-H⋯O hydrogen bonds, forming chains which extend along the b-axis direction.
authors.affiliation: University of Monastir, Heterocyclic Chemistry Laboratory, Products, Natural and Reactivity, Faculty of Sciences of Monastir, Avenue of the Environment, 5000 Monastir, Tunisia.
authors.forename: Heithem
authors.initials: H
authors.lastname: Abda
authors.affiliation: University of Monastir, Laboratory of Physical Chemistry of Materials, Faculty of Sciences of Monastir, Avenue of the Environment, 5019 Monastir, Tunisia.
authors.forename: Khaireddine
authors.initials: K
authors.lastname: Ezzayani
authors.affiliation: University of Monastir, Heterocyclic Chemistry Laboratory, Products, Natural and Reactivity, Faculty of Sciences of Monastir, Avenue of the Environment, 5000 Monastir, Tunisia.
authors.forename: Kaiss
authors.initials: K
authors.lastname: Aouadi
authors.affiliation: Laboratory of Electrochemistry, Materials and Environment, Kairouan University, 3100 Kairouan, Tunisia.
authors.forename: Taha
authors.initials: T
authors.lastname: Guerfel
authors.affiliation: University of Lyon CNRS, Institute of Chemistry and Biochemistry and Molecular Supramolecular, UMR 5246, Laboratoire de Chimie Organique 2-Glycochemistry, Curien Building, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France.
authors.forename: Sebastien
authors.initials: S
authors.lastname: Vidal
authors.affiliation: University of Monastir, Heterocyclic Chemistry Laboratory, Products, Natural and Reactivity, Faculty of Sciences of Monastir, Avenue of the Environment, 5000 Monastir, Tunisia.
authors.forename: Moncef
authors.initials: M
authors.lastname: Msaddek
keywords: crystal structure; hydrogen bonding; isoxazolidine