presented. We describe in detail their synthetic preparation, which includes significant improvements of previously reported protocols as well as access to new analogs with functional modifications of the steroid skeleton and of the C(17)‐attached side chain. We report the biological potency of the prepared brassinosteroid analogs as plant hormones, which were carefully established in the French bean
                                    提出了对油菜素类
固醇结构修饰的系统研究。我们详细描述了它们的合成制备方法,其中包括对先前报道的方案的重大改进,以及获得对类
固醇骨架和C(17)连接的侧链进行功能性修饰的新类似物的途径。我们报告了制备的油菜素类固
醇类似物作为植物激素的
生物效价,它们是在菜豆第二节间伸长测定中仔细建立的,并根据最近报道的结构数据详细讨论了我们的观察结果,该数据详述了三聚体复合物中
油菜素内酯与三聚体之间的分子相互作用。蛋白受体激酶BRASSINOSTEROID IN
SENSITIVE 1(BRI1)和体细胞胚发生受体激酶1(
SERK1)。2 24-picastastasterone的O溶形式,我们讨论它们的物理性质,
水解稳定性和
生物活性。