作者:Adolfo Maricán、Mario J. Simirgiotis、Leonardo S. Santos
DOI:10.1016/j.tetlet.2013.07.042
日期:2013.9
stereoselective synthesis of Tofacitinib (CP-690,550), a Janus tyrosine kinase (JAK3) specific inhibitor, has been achieved starting from (5S)-5-hydroxypiperidin-2-one in 10 steps from 2 with a 9.5% overall yield. The potentiality of this synthetic route is the obtention of tert-butyl-(3S,4R)-3-hydroxy-4-methylpiperidine-1-carboxylate (6b) as a new chiral precursor involved in the synthesis of CP690,550
从(5 S)-5-羟基哌啶-2-酮从2开始以10个步骤完成了Tofacitinib(CP-690,550)(一种Janus酪氨酸激酶(JAK3)特异性抑制剂)的新型立体选择性合成,总收率为9.5% 。这种合成路线的潜力是获得了叔丁基-(3 S,4 R)-3-羟基-4-甲基哌啶-1-羧酸酯(6b)作为参与CP690,550合成的新手性前体,在三步反应中,没有差向异构,而不是在上述反应中使用5个或更多步骤从6b的类似物获得该化合物。