Highly stereoselective construction of 4,6-cis-substituted quinolizidine ring core: an application to enantioselective total synthesis of the marine alkaloid clavepictines A, B and pictamine
作者:Naoki Toyooka、Yasuhito Yotsui、Yasuko Yoshida、Takefumi Momose、Hideo Nemoto
DOI:10.1016/s0040-4020(99)00996-5
日期:1999.12
The enantioselective total synthesis of the marine alkaloids clavepictines A, B and pictamine has been achieved through the highly stereocontrolled quinolizidine ring closure of the conformationally constrained piperidine ring system (2), which bears the chiral centers and appropriate functionality needed for the synthesis of target alkaloids. The absolute stereochemistry of clavepictines and pictamine
通过高度立体控制的哌啶环系统(2)的立体立体控制的喹诺唑烷环闭合,实现了海洋生物碱类苦味碱类A,B和哌替明的对映选择性全合成,该化合物具有手性中心和合成目标生物碱所需的适当功能性。clavepictines和pictamine的绝对立体化学被证明是3 - [R,4小号,6小号,9A小号通过本合成。