side chain mode of cyclization the 14‐membered disulfide cyclopeptide (5) has been synthesized as conformationally constrained analog of the prototypical chemotactic tripeptide For‐Met‐Leu‐Phe‐OMe. Compound 5 is inactive towards human neutrophils. The lack of biological activity of cyclotetrapeptide 5 is discussed taking into account the backbone folding and the side chain topography.
通过使用侧链到侧链环化模式,14 元二
硫环肽 (5) 已合成为原型趋化三肽 For-Met-Leu-Phe-OMe 的构象受限类似物。化合物 5 对人中性粒细胞无活性。考虑到骨架折叠和侧链拓扑,讨论了环四肽 5 缺乏
生物活性的问题。