作者:Fabio Bellina、Adriano Carpita、Luca Mannocci、Renzo Rossi
DOI:10.1002/ejoc.200400101
日期:2004.6
The first total synthesis of naturally occurring (−)-nitidon and its enantiomer is reported. The best of the routes investigated for preparation of these enantiomerically pure compounds involves a modification of the Cadiot−Chodkiewicz reaction and the Sharpless asymmetric epoxidation of an (E)-2-ene-4,6-diyn-1-ol as key steps and proceeds in five steps and 18% overall yield. Both enantiomers of nitidon
报道了天然存在的 (-)-nitidon 及其对映异构体的首次全合成。为制备这些对映体纯化合物而研究的最佳途径包括对 Cadiot-Chodkiewicz 反应的修饰和 (E)-2-ene-4,6-diyn-1-ol 的 Sharpless 不对称环氧化作为关键步骤和分五步进行,总产率为 18%。已发现 nitidon 的两种对映异构体和一些相关的 6-(1,3-diyn-1-yl)-2H-pyran-2-ones 在体外对人类癌细胞系表现出显着的细胞毒活性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)