functional groups (carboxylates) by a strategically placed internal nucleophile (an amino group) in cyclic precursors was used as a key general approach to functionalized azabicyclic scaffolds. The utility of the method was demonstrated by the synthesis of three bicyclic β-amino acids (analogues of nipecotic acid), which were prepared in good yields and on a relatively large scale.
环状前体中策略性放置的内部亲核试剂(
氨基)对相同亲电官能团(
羧酸酯)的区分被用作功能化
氮杂双环支架的关键通用方法。该方法的实用性通过合成三个双环β-
氨基酸(
乳酸菌的类似物)得到了证明,它们以高收率和较大规模制备。