Five glutarimidealkaloidscordiarimide A (5), cordiarimideB (6), crotonimide A (3), crotonimideB (4), and julocrotine (2) have been synthesized starting from Boc‐L‐glutamine (7). The benzylic alcohol chiral centre of cordiarimidesB (6) has been established in 6:1 diastereoselectivity by catalytic asymmetric hydrogenation using Zhou's catalytic system Pd(CF3CO2)2/(R,R)‐Me‐DuPhos.
从Boc- L-谷氨酰胺(7)开始合成了5种戊二酰亚胺生物碱堇青酰胺A(5),堇青酰胺B(6),巴豆酰亚胺A(3),巴豆酰亚胺B(4)和朱罗汀(2)通过使用Zhou催化体系Pd(CF 3 CO 2)2 /(R,R)-Me-DuPhos进行催化不对称氢化,以6:1非对映选择性建立了堇青酰胺B(6)的苄醇手性中心。