Stable annelated chiral NADH models with a rigidified amide part in the quinoline series: synthesis, reactivity and grafting on a Merrifield resin
作者:Christiane Vitry、Jean-Luc Vasse、Georges Dupas、Vincent Levacher、Guy Quéguiner、Jean Bourguignon
DOI:10.1016/s0040-4020(01)00166-1
日期:2001.4
yields during the reduction of methyl benzoylformate. An interesting variation of the enantioselectivity as a function of magnesium ion concentration has been observed. Under the best conditions, methyl mandelate was obtained in up to 95% ee (R). To facilitate the recycling of these models, grafting of reagent 4 on a Merrifield resin has been developed. The resulting polymer-supported reagent 4 was tested
描述了衍生自喹啉的新的手性烟酰胺腺嘌呤二核苷酸氢化模型的合成。使用仿生方法,通过将手性助剂包括在内酰胺结构中,获得酰胺羰基的面外定位。结果表明,喹啉结构的苯环上的给电子基团是在苯甲酸甲酰甲酯还原过程中获得高化学收率所必需的。已经观察到对映选择性作为镁离子浓度的函数的有趣变化。在最佳条件下,获得高达95%ee(R)的扁桃酸甲酯。为了促进这些模型的回收,已经开发了在Merrifield树脂上接枝试剂4的方法。所得聚合物负载的试剂在不对称还原苯甲酰基甲酸甲酯中测试了图4。