Stereodivergent Synthesis of Alkaloid (±)-223A and (±)-6-<i>epi</i>-223A via Rh-Catalyzed Hydroformylation Double Cyclization
作者:Wen-Wei Huang、Jui-Teng Cheng、Wei-Ting Hsiao、Wen-Hua Chiou
DOI:10.1021/acs.joc.3c02366
日期:2024.4.5
A stereodivergent approach toward total syntheses of Dendrobatid alkaloids 223A and 6-epi-223A is described. The approach features a concise construction of an indolizidine skeleton by Rh-catalyzed domino hydroformylation double cyclization and sequential stereocontrolled transformations such as reductive alkylation or anti-selective α-alkylation of the 5-oxoindolizidine. These stereoselective reactions
描述了Dendrobatid生物碱 223A 和 6- epi -223A 全合成的立体发散方法。该方法的特点是通过 Rh 催化的多米诺加氢甲酰化双环化和连续立体控制转化(例如 5-氧代吲哚里西啶的还原烷基化或反选择性 α-烷基化)来简洁构建吲哚里西啶骨架。这些立体选择性反应为目标提供了所需的立体化学。