designed as potential ligands for the glucocorticoid receptors (GRs). A short and efficient synthetic sequence was developed allowing the preparation of pure diastereomeric spirocyclic analogs of fluorocortivazol. Our studies also revealed a new application of Burgess reagent leading to a ring expansion. The structures and conformations of several key intermediates and products were confirmed by single crystal
螺环
吲唑被设计为糖皮质激素受体(GRs)的潜在
配体。开发了一种短而有效的合成序列,可以制备
氟代卡他唑的纯非对映体螺环类似物。我们的研究还揭示了Burgess试剂的新应用导致环扩展。通过单晶X射线衍射分析证实了几种关键中间体和产物的结构和构象。DFT计算也支持构象分配。作为概念验证,我们测试了非对映体化合物13b和14b对GR的亲和力。令人鼓舞的是,发现14b显示出27 nM的有希望的IC 50。