Acta Cryst. (2006). E62, o2358-o2360  [ doi:10.1107/S1600536806017338 ]

Cyclo(L-isoleucyl-L-isoleucyl)

C. H. Görbitz and L. M. Hartviksen

Abstract: The title compound [systematic name: (3S,6S)-3,6-bis(S-sec-butyl)-2,5-piperazine-2,5-dione], C₁₂H₂₂N₂O₂, was crystallized from a solution of the corresponding linear peptide L-isoleucyl-L-isoleucine. In the crystal structure, molecules form traditional N-HO hydrogen-bonded tapes along the a axis [a = 6.242 (9) Å].

Online 17 May 2006

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