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. 2001 Jun;57(Pt 6):747-8.
doi: 10.1107/s0108270101004590. Epub 2001 Jun 12.

meso-N,N'-oxalyldivaline

B Perić  1 , B Kojić-Prodić, J Makarević, M Jokić, M Zinić
Affiliations

meso-N,N'-oxalyldivaline

B Perić et al. Acta Crystallogr C. 2001 Jun.

Abstract

The title compound, 2,2'-(oxalyldiimino)bis(3-methylbutanoic acid), C12H20N2O6, possesses a centre of symmetry. In the crystal, molecules are connected by hydrogen bonds between oxamide and carboxyl groups, similar to the pattern of the monoclinic forms of HO-Gly-CO-CO-Gly-OH and HO-Aib-CO-CO-Aib-OH (Gly is glycine and Aib is 2-aminoisobutyric acid). The characteristic torsion angles in the title compound are close to those in peptide alpha-helices.

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