Five glutarimide alkaloids cordiarimide A (5), cordiarimide B (6), crotonimide A (3), crotonimide B (4), and julocrotine (2) have been synthesized starting from Boc-L-glutamine (7). The benzylic alcohol ch...Five glutarimide alkaloids cordiarimide A (5), cordiarimide B (6), crotonimide A (3), crotonimide B (4), and julocrotine (2) have been synthesized starting from Boc-L-glutamine (7). The benzylic alcohol chiral centre of cordiarimides B (6) has been established in 6 : 1 diastereoselectivity by catalytic asymmetric hydrogenation using Zhou's catalytic system Pd(CF3CO2)2/(R,R)-Me-DuPhos.展开更多
基金Project supported by the National Natural Science Foundation of China (No. 20832005) and the National Basic Research Program (973 Program) of China (No. 2010CB833200).
文摘Five glutarimide alkaloids cordiarimide A (5), cordiarimide B (6), crotonimide A (3), crotonimide B (4), and julocrotine (2) have been synthesized starting from Boc-L-glutamine (7). The benzylic alcohol chiral centre of cordiarimides B (6) has been established in 6 : 1 diastereoselectivity by catalytic asymmetric hydrogenation using Zhou's catalytic system Pd(CF3CO2)2/(R,R)-Me-DuPhos.