2-Oxopiperazine-Based γ-Turn Conformationally Constrained Peptides: Synthesis of CCK-4 Analogues
作者:Susana Herrero、M. Teresa García-López、Miriam Latorre、Edurne Cenarruzabeitia、Joaquín Del Río、Rosario Herranz
DOI:10.1021/jo0256336
日期:2002.5.1
gamma-turn conformationallyconstrained tripeptides. The synthetic pathway devised for the preparation of both epimers of 1 at C(5) involves a reductive amination of cyanomethyleneaminopseudopeptides with amino acid derivatives, followed by regiospecific lactamization of the resulting C-backbone branchedpseudopeptides. The versatility of this methodology is illustrated in the synthesis of analogues of the