Total Synthesis of the Immunosuppressant FR901483 via an Amidoacrolein Cycloaddition
作者:Jun-Ho Maeng、Raymond L. Funk
DOI:10.1021/ol015506g
日期:2001.4.1
[reaction: see text]. The total synthesis of the potent immunosuppressant FR901483 is described. In a key step, the intermolecular Diels-Alder cycloaddition of an amidoacrolein with 2-(triisopropylsilyloxy)-1,3-butadiene produced the desired 3-cyclohexene-1-carboxaldehyde. This compound was subjected to basic followed by acidic conditions which effected two sequential aldol cyclizations to deliver
[反应:请参见文字]。描述了有效的免疫抑制剂FR901483的总合成。在关键步骤中,氨基丙烯醛与2-(三异丙基甲硅烷氧基)-1,3-丁二烯的分子间狄尔斯-阿尔德环加成反应产生了所需的3-环己烯-1-羧醛。使该化合物经受碱性,然后经受酸性条件,该酸性条件实现了两个连续的醛醇环化,以递送天然产物的三环体系,其适当官能化以完成总合成。