Woohyung Lee, Sunmi Kwon, Philjae Kang, Ilia A. Guzei and Soo Hyuk Choi
Org. Biomol. Chem., 2014,12, 2641-2644
DOI:
10.1039/C4OB00266K,
Communication
αβα-Tripeptide that contains a cyclic β-amino acid with an eight-membered ring, a cis-2-aminocyclooct-5-enecarboxylic acid (cis-ACOE) or a cis-2-aminocyclooctanecarboxylic acid (cis-ACOC) displayed an 11/9-helical turn in the crystal state. The related α/β-peptide oligomers were shown to adopt 11/9-helical conformations in solution.