1997 amino acids, peptides

amino acids, peptidesU 0400

07 - 223A New Conformationally Restricted Aspartic Acid Analogue witha Cyclohexanone Skeleton. — The crystal and molecular structureof the new title analogue (I) is described. The cyclohexanone ring adopts adistorted chair conformation. The carboxylic acid and the methyl ester groupshave axial positions, while the benzamido group is equatorial. The amino acidresidue adopts a semi-extended conformation. In the crystal, the molecules forman infinite layer perpendicular to the crystallographic z axis. — (BUNUEL,E.; CATIVIELA, C.; DIAZ-DE-VILLEGAS, M. D.; GALVEZ, J. A.; ActaCrystallogr., Sect. C: Cryst. Struct. Commun. 52 (1996) 10, 2641-2644; Dep.Quim. Org., Univ. Zaragoza-CSIC, E-50009 Zaragoza, Spain; EN)

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