The synthesis of (R)-duloxetine is described. Dynamic kinetic resolution of β-hydroxynitrile rac-1 using Candida antarctica lipase B (CALB, N435) and ruthenium catalyst 6 afforded β-cyano acetate (R)-2 in high yield and in excellent enantioselectivity (98% ee). The subsequent synthetic steps were straightforward and (R)-duloxetine was isolated in 37% overall yield over 6 steps. The synthetic route
描述了(R)-
度洛西汀的合成。使用南极假丝酵母
脂肪酶B(CALB,N435)和
钌催化剂6动态动力学拆分β-羟基腈rac - 1可以高收率和出色的对映选择性(98%ee)获得β-
氰基
乙酸酯(R)-2。随后的合成步骤是简单的,并且在6个步骤中以37%的总收率分离了(R)-
度洛西汀。合成途径也构成了(S)-
度洛西汀的正式全合成。