prepared by the addition reaction of α-lithiated 2-alkyl-2-oxazolines 9-Li, derived from optically active oxazolines 9, to N-cumyl nitrones 2. The relative stereochemistry of alkanamides 5 and 6 has been established by 1D-NOESY experiments carried out on the related pyrimidinones 7, whereas the absolute configuration of alkanamides 12 and 13 has been confirmed by an X-ray analysis.
通过使旋光的
恶唑啉9衍生的α-
锂化的2-烷基-2-
恶唑啉9 - Li与N-枯基硝酮2加成反应,可以制备高度对映体富集的β-
氨基烷酰胺12和β-苯基
氨基烷酰胺13。链烷酰胺5和6的相对立体
化学已经通过对相关
嘧啶酮7进行的1D-NOESY实验确定,而链烷酰胺12和13的绝对构型已经通过X射线分析得到了证实。