Tetrahydro-β-carboline-Based Spirocyclic Lactam as Type II′ β-Turn: Application to the Synthesis and Biological Evaluation of Somatostatine Mimetics
作者:Giordano Lesma、Roberto Cecchi、Alfredo Cagnotto、Marco Gobbi、Fiorella Meneghetti、Manuele Musolino、Alessandro Sacchetti、Alessandra Silvani
DOI:10.1021/jo302737j
日期:2013.3.15
The synthesis of novel spirocyclic lactams, embodying d-tryptophan (Trp) amino acid as the central core and acting as peptidomimetics, is presented. It relies on the strategic combination of Seebach’s self-reproduction of chirality chemistry and Pictet–Spengler condensation as key steps. Investigation of the conformational behavior by molecular modeling, X-ray crystallography, and NMR and IR spectroscopies
介绍了以d-色氨酸(Trp)氨基酸为核心并拟肽的新型螺环内酰胺的合成。它依赖于Seebach手性化学物质的自我复制与Pictet-Spengler缩合的战略结合作为关键步骤。通过分子建模,X射线晶体学以及NMR和IR光谱对构象行为的研究表明,所有化合物的II'型β-转角构象都非常稳定且高度可预测。依靠此功能,我们还将其应用于激素生长抑素的两种潜在的模拟物上,这是一种与药物相关的天然肽,它含有基于Trp的II'型β-turn药效基团。