of ent-sedridine is described. The development of a new method for the construction of the C-2 chiral center of the piperidine ring was achieved using a proline-catalyzed Mannich reaction. Reaction of4-hydroxybutanal and p-anisidine to form an imine and subsequent addition of acetone gave the key chiral aliphatic precursor with high enantioselectivity.
描述了 ent-sedridine 的全合成。使用脯
氨酸催化的曼尼希反应开发了一种构建
哌啶环 C-2 手性中心的新方法。
4-羟基丁醛和
对茴香胺反应形成
亚胺,随后加入
丙酮得到具有高对映选择性的关键手性
脂肪族前体。