Synthesis of chiral 3-substituted-3-aminomethyl-pyrrolidines and related compounds
作者:Mark J. Suto、William R. Turner、Jeffrey W. Kampf
DOI:10.1002/jhet.5570290612
日期:1992.10
nitrogen protecting group for the pyrrolidine nitrogen, but also as a chiral auxillary. The synthesis of the 4-position enantiomers was accomplished by converting the ester of 1 to the ketone, protecting the ketone as the benzyloxime and separation by chromatography. These key intermediates were converted to the (R) and (S)-3-methyl-3-aminomethylpyrrolidines by removal of the benzyl group followed
一系列手性的的制备3-甲基-3-取代吡咯烷/从(起始吡咯烷酮- [R)-4-(甲氧基羰基)-1-(1- [R苯乙基)-2-吡咯烷酮(1)进行说明。手性α-甲基苄基官能团不仅用作吡咯烷氮的氮保护基,而且还用作手性助剂。通过将1的酯转化为酮,将酮保护为苄基肟并通过色谱分离来完成4-位对映异构体的合成。通过除去苄基,然后氧化,将这些关键中间体转化为(R)和(S)-3-甲基-3-氨基甲基吡咯烷。获得了3-甲基-3-(1-氨基乙基)吡咯烷通过两步还原相应的肟。立体化学分配通过X射线晶体学确定。