A stereoselective total synthesis of (−)-cryptocaryol A (1) is described. Key features of the 17-step route include the use of three boron-mediated aldol reaction–reduction sequences to control all stereocenters and an Ando modification of the Horner–Wadsworth–Emmons olefination that permitted the installation of the Z double bond of the α-pyrone ring.
描述了(−)-cryptocaryol A (
1)的立体选择性全合成。该17步路线的关键特点包括使用三个
硼介导的醛缩反应-还原序列来控制所有立体中心,以及对Horner–Wadsworth–Emmons烯化的Ando修改,允许安装α-
吡喃环的
Z双键。