meso‐N,N′‐Oxalyldivaline |
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Authors: | Berislav Peri Biserka Koji‐Prodi Janja Makarevi Milan Joki Mladen
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Institution: | Berislav Perić,Biserka Kojić‐Prodić,Janja Makarević,Milan Jokić,Mladen Žinić |
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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 α‐helices. |
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