(±)-2'-Phenyl-cyclo-hexa-nespiro-4'-(aze-pano[1,2-b]isoxazolidine).

ABSTRACT: In the crystal structure of the racemic title isoxazolidine, C(19)H(27)NO, the relative stereochemistry between the phenyl group and the bridgehead H atom is shown to be syn. There are two mol-ecules in the asymmetric unit, one of which is the 7R*,13R* enanti-omer, and one of which is the 7S*,13S* enanti-omer. These enanti-omers adopt different orientations of the phenyl ring with respect to the isoxazolidine ring, with C-C-C-C torsion angles of 63.6 (4) and 86.8 (4)°, respectively. In both enanti-omers, the six-membered ring adopts a chair conformation, while the seven-membered ring adopts a twist-chair conformation.

SUBMITTER: Crimmins D 

PROVIDER: S-EPMC2962160 | biostudies-literature | 2008 Jul

REPOSITORIES: biostudies-literature