descriptionPublicationkeyboard_double_arrow_right Article 15 May 1996Publisher:International Union of Crystallography (IUCr)Journal:Acta Crystallographica Section C Crystal Structure Communications, volume 52, pages 1,252-1,254 (issn: 0108-2701,

Authors: Buñuel, Elena; Cativiela, Carlos; Díaz de Villegas, María D.; Gálvez, José A.;

doi: 10.1107/s0108270195016106

handle: 10261/270852

A Conformationally Restricted Aspartic Acid Analogue

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Abstract

In the title compound, (1R,2R,3S,4S)-3-benzamido-3-methoxycarbonylbicyclo[2.2.1]heptane-2-carboxylic acid, C17H19NO5, the norbornyl group shows distortion from C2v(mm2) symmetry of the parent hydrocarbon. The values determined for the torsion angles about the N-C[alpha] ([varphi]) and C[alpha]-CO ([psi]) bonds correspond to a semi-extended conformation for the amino acid residue. The structure is stabilized by an intermolecular O-H...O hydrogen bond between the carboxyl and amide groups and an intramolecular N-H...O hydrogen bond involving the benzamido and the carboxylic acid groups. Peer reviewed

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Spanish National Research Council
Spain

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CCDC 126700: Experimental Crystal Structure Determination
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