作者:Sung Ho Kang、Suk Youn Kang、Hyeong-wook Choi、Chul Min Kim、Hyuk-Sang Jun、Joo-Hack Youn
DOI:10.1055/s-2004-822340
日期:——
The natural (+)-lasonolide A (1), an anti-tumor agent, has been synthesized via thermodynamic benzylidene formation at the C 2 2 quaternary chiral center, use of a disulfone equivalent for elongation of the C 1 5 -C 1 7 three-carbon chain as well as introduction of the two trans olefins at C 1 5 and C 1 7 , iodocyclization for the upper THP. Michael addition for the bottom THP, and intramolecular Horner-Emmons
天然 (+)-lasonolide A (1) 是一种抗肿瘤剂,通过在 C 2 2 四元手性中心形成热力学亚苄基,使用二砜当量延长 C 1 5 -C 1 7 合成三碳链以及在C 1 5 和C 1 7 处引入两个反式烯烃,上层THP的碘环化。底部 THP 的 Michael 加成和 20 元大环内酯的分子内 Horner-Emmons 烯化。