作者:Michael E. Jung、Jonah J. Chang
DOI:10.1021/ol1009762
日期:2010.7.2
cyclopropyl diester 27 generated the hydrindanone 28 with complete stereocontrol. Thermal decarbomethoxylation of 28 gave the monoester 29, a key intermediate in Heathcock’s synthesis, thereby completing a formal total synthesis of (+)-fawcettimine 1. The analogous cyclization of 33, the diastereomer of 27, afforded the diastereomeric diester 34, thereby demonstrating that the cyclization process is diastereospecific
甲硅烷基烯醇醚对活化的环丙基二酯27的非对映特异性攻击产生了具有完全立体控制的氢化丹酮28。28的热脱碳甲氧基化作用使单酯29成为希思考克合成中的关键中间体,从而完成了(+)-fawcettimine 1的正式全合成。33的非对映异构体的类似环化为27,得到非对映二酯34,从而证明环化过程是非对映特异性的。