divergent synthesis of (+)‐8‐epi‐puupehedione, (+)‐chromazonarol, (+)‐yahazunol, and (+)‐yahazunone is reported. The key steps were a palladium‐catalyzed tandem carbene migratory insertion of an aryl iodide and a drimanal hydrazone, a highly regioselective enol reduction, an oxa‐Stork–Danheiser transposition reaction, an electrocyclization of a conjugated tetraenone, and a redox reaction of dimethoxybenzenes
据报道(+)-8-表位puupehedione,(+)-
铬唑烷醇,(+)-yahazunol和(+)-yahazunone的合成不同。关键步骤是
钯催化的串联卡宾迁移插入芳基
碘化物和
十二烷基,高度区域选择性的烯醇还原,氧杂-斯托克-丹海塞尔换位反应,共轭四烯酮的电环化和二
甲氧基苯的氧化还原反应。