the low nanomolar range. The three-dimensional (3D) NMR solution structures were determined, and docking studies to X-ray crystal structure of the extracellular segment of integrin alphaVbeta3 in complex with the reference compound EMD121974 were performed on selected analogues to elucidate the interplay between structure and function in these systems and to evidence the subtle bases for receptorial recognition
以手性非外消旋形式制备了11个γ-
氨基
环戊烷羧酸(Acpca)平台,包括四个二羟基代表分子(19-22),三个羟基类似物(34-36)和四个脱氧衍
生物(30-33)。然后通过混合固相/溶液方案将这些简单的单元嫁接到Arg-Gly-Asp(RGD)三肽构架上,从而提供11种环-[-Arg-Gly-Asp-Acpca-]型大环类似物的集合体-11。评价各个化合物对αVbeta3和αVbeta5整联蛋白受体的结合亲和力。与参考化合物
EMD121974和ST1646相比,类似物10表现出非常有趣的活性谱(IC50 / alphaVbeta3 = 1.5 nM; IC50 / alphaVbeta5 = 0.59 nM)。密切相关的同类物6、8 和9也被证明是出色的双重粘合剂,其活性
水平在低纳摩尔范围内。确定了三维(3D)NMR溶液结构,并在选定的类似物上与参照化合物
EMD121974进行了整合素α