作者:Fulvia Felluga、Valentina Gombac、Michela Pavan、Giuliana Pitacco、Ennio Valentin
DOI:10.1016/j.tetasy.2003.10.014
日期:2004.1
The synthesis of optically active 4-methyl-5-n-butyl- and 5-n-pentylpyrrolidin-2-ones, aza analogues of the corresponding Quercus lactones, has been achieved by a chemoenzymatic procedure, involving in the enantiodifferentiating step the enzymatic kinetic resolution of the corresponding γ-ketoester precursors, followed by reductive amination and subsequent cyclization of the enantiomerically pure hydrolysis
光学活性的4-甲基-5-正丁基和5-正戊基吡咯烷二-2-酮(相应的栎内酯的氮杂类似物)的合成已通过化学酶促方法完成,该化学酶促方法包括在对映异构步骤中进行酶促动力学。拆分相应的γ-酮酸酯前体,然后进行还原胺化,然后将对映体纯水解产物环化。还研究了反应条件的影响以及底物结构对酶水解的影响。