Synthesis and Evaluation of the β-Turn Properties of 4-Amino-1,2,4,5-tetrahydro-2-benzazepin-3-ones and of Their Spirocyclic Derivative
作者:Karolien Van Rompaey、Steven Ballet、Csaba Tömböly、Rien De Wachter、Kenno Vanommeslaeghe、Monique Biesemans、Rudolph Willem、Dirk Tourwé
DOI:10.1002/ejoc.200500996
日期:2006.7
A series of 4-amino-tetrahydro-2-benzazepin-3-one derivatives (Ac–Aba–Xxx–NHMe) were prepared as tetrapeptide mimetics. Considering the structural resemblance with the so-called Freidinger lactams, their propensity to adopt a β-turn conformation was investigated by NMR spectroscopy (solvent and temperature dependence) and molecular modeling. Interestingly, most of these lactams adopt extended conformations