6-tetrahydropyridine (21) was developed to establish the stereocenter. Compound 21 was accessed via Suzuki coupling of 23, prepared by Friedel–Crafts acylation, with vinyl bromide (24) in the presence of very low loading of a Pd catalyst (0.15 mol % Pd). Finally, the penultimate intermediate (7) was coupled with acryloyl chloride using an impinging jet to prepare the API. Detailed kinetic and mechanistic work was
描述了制备 ABBV-105(一种布鲁顿氏
酪氨酸激酶 (BTK)
抑制剂)的公斤级合成工艺的演变。第一代路线利用倒数第二个中间体( 7 )的手性拆分。 Bartoli 或 Leimgruber-Batcho
吲哚合成法用于制备关键中间体
吲哚硼酸酯 ( 23 )。随着 A
PI 需求的增加,人们发现第一代路线产量低且价格昂贵。它需要柱色谱法,具有来自诱变杂质评估的多个警报结构,并且缺乏稳健性。在第二代路线中,开发了一种新型Ru催化的1,2,5,6-四氢
吡啶( 21 )不对称氢化来建立立体中心。化合物21是通过23 (通过 Friedel-Crafts 酰化制备)与
溴乙烯 ( 24 ) 在极低负载的 Pd 催化剂(0.15 mol% Pd)存在下进行 Suzuki 偶联获得的。最后,使用冲击射流将倒数第二个中间体( 7 )与
丙烯酰氯偶联以制备A
PI。进行了详细的动力学和机械工作,以控制 A
PI