A multi‐enzymatic cascade process involving transaminases (TAs) and reductive aminases (RedAms) to produce enantiomerically pure 2,5‐disubstituted pyrrolidine alkaloids from their respective 1,4‐diketones is reported. Several TAs were screened and the best results for diketone monoamination were obtained with an R‐selective TA from Mycobacterium chlorophenicum and with an S‐selective TA from Bacillus
据报道,涉及一个多酶级联过程,涉及转
氨酶(TAs)和还原性
氨基酶(RedAms),从它们各自的1,4-二酮生产对映体纯的2,5-二取代的
吡咯烷
生物碱。筛选了几个TA,并用来自
氯酚分枝杆菌的R选择性TA和巨大芽孢杆菌的S选择性TA获得了二酮单胺化的最佳结果。
吡咯啉还原最好用皮肤Ajellomyces dermatitidis(AdRedAm)。最后,使用上述酶实施了
生物催化一锅级联反应,并制得了各种具有高(> 99%)转化率,非对映异构体和对映异构体过量值的2-甲基-5-烷基
吡咯烷酮。