Total Synthesis of (−)-Actinophyllic Acid Enabled by a Key Dual Ir/Amine-Catalyzed Allylation
作者:Xiao Liang、Tian-Yuan Zhang、Chun-Yan Meng、Xue-Dan Li、Kun Wei、Yu-Rong Yang
DOI:10.1021/acs.orglett.8b01861
日期:2018.8.3
asymmetric total synthesis of (−)-actinophyllic acid is described. This highly efficient and enantioselective approach allows the rapid installation of the four contiguous chiral centers (C16, C15, C20, and C19) by way of a dual Ir/amine catalytic allylation of 2-indolyl vinyl carbinol 6 and an aldol reaction of resultant chiral aldehyde 4a with 2-pyrrolidinone 5. The key indol-3-ylmethanamine moiety and
描述了催化不对称全合成(-)-猕猴桃酸的合成策略。这种高效且对映选择性的方法允许通过2-吲哚基乙烯基甲醇6的双重Ir /胺催化烯丙基化和所得手性的醛醇缩合反应快速安装四个连续的手性中心(C16,C15,C20和C19)。醛4a与2-吡咯烷酮5。关键的吲哚-3-基甲胺基部分和1-氮杂双环[4.2.1]壬烷环系统分别通过选择性的曼尼希样环化和分子内N-烷基化而容易地产生。