Gold(I) as an Artificial Cyclase: Short Stereodivergent Syntheses of (−)-Epiglobulol and (−)-4β,7α- and (−)-4α,7α-Aromadendranediols
作者:Javier Carreras、Madeleine Livendahl、Paul R. McGonigal、Antonio M. Echavarren
DOI:10.1002/anie.201402044
日期:2014.5.5
aromadendrane sesquiterpenes, (−)‐epiglobulol, (−)‐4β,7α‐aromadendranediol, and (−)‐4α,7α‐aromadendranediol, have been synthesized in only seven steps in 12, 15, and 17 % overall yields, respectively, from (E,E)‐farnesol by a stereodivergent gold(I)‐catalyzed cascade reaction which forms the tricyclic aromadendrane core in a single step. These are the shortest total syntheses of these natural compounds
三种天然芳香倍半萜,(−)-表球醇、(−)-4β,7α-aromadendranediol 和 (−)-4α,7α-aromadendranediol,仅通过七个步骤合成,总产率为 12%、15% 和 17%,分别通过立体发散金(I)催化的级联反应从( E , E )-金合欢醇制备,一步形成三环芳香树烷核心。这些是这些天然化合物的最短全合成。