treatment for obesity. Current methods of synthesis require several steps that have long reaction times and/or lack regioselectivity. Here we present a novel, regioselective synthesis of rimonabant though an enamine-directed 1,3-dipolar cycloaddition. In addition, we present a new and more reactive hydrazonoyl halide for the generation of the requisite nitrile imine dipole.
利莫那班(Rimonabant)是一种高效
大麻素1型(CB 1)受体反向激动剂,最近已在欧盟批准用于肥胖症的治疗。当前的合成方法需要几个步骤,这些步骤具有长的反应时间和/或缺乏区域选择性。在这里,我们介绍了一种新的区域选择性合成的
利莫那班通过烯胺定向的1,3-偶极环加成反应。此外,我们提出了一种新的,更具反应性的卤代
酰卤,用于生成所需的腈
亚胺偶极。