The present invention relates to novel and concise process for the construction of chiral 3-substituted tetrahyroquinoline derivatives based on proline catalyzed asymmetric α-functionalization of aldehyde, followed by in situ reductive cyclization of nitro group under catalytic hydrogenation condition with high optical purities. Further the invention relates to conversion of derived chiral 3-substituted tetrahydroquinoline derivatives into therapeutic agents namely (−)-sumanirole (96% ee) and 1-[(S)-3-(di-methylamino)-3,4-dihydro-6,7-dimethoxy-quinolin-1(2H)-yl]propanone[(S)-903] (92% ee).
本发明涉及一种新颖简洁的过程,用于基于脯
氨酸催化的不对称α-官能团化反应制备手性3-取代
四氢喹啉衍
生物,随后在催化氢化条件下通过原位还原环化反应将硝基基团还原为
氨基基团,具有高光学纯度。此外,本发明还涉及将所得手性3-取代
四氢喹啉衍
生物转化为治疗剂,即(-)-苏曼罗尔(96%ee)和1-[(S)-3-(
二甲氨基)-3,4-二氢-6,7-二甲氧基
喹啉-1(2H)-基]
丙酮[(S)-903](92%ee)。