化学学报 ›› 2004, Vol. 62 ›› Issue (8): 811-817. 上一篇    下一篇

研究论文

Sarsolilide A的合成研究——十四元碳环骨架的构建

段志勇, 张家仲, 许杏祥   

  1. 中国科学院上海有机化学研究所, 上海, 200032
  • 投稿日期:2003-03-06 修回日期:2003-12-28 发布日期:2014-02-18
  • 通讯作者: 许可祥,E-mail:xuxx@mail.sioc.ac.cn E-mail:xuxx@mail.sioc.ac.cn

Synthetic Studies of Sarsolilide A--Construction of the 14-Membered Cembranoid Skeleton

DUAN Zhi-Yong, ZHANG Jia-Zhong, XU Xing-Xiang   

  1. Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032
  • Received:2003-03-06 Revised:2003-12-28 Published:2014-02-18

在对目标分子Sarsolilide A的全合成研究工作中,从香叶醇和异丁醛出发,分别制备了醛前体11和磷酸酯前体18,并以分子间HWE反应实现了两个前体的联接.利用Sharpless不对称双羟化反应区域选择性地引入了化合物20中的7,8位双羟基.经多步转化制得关环前体5.利用低价钛参与的McMurry反应实现了十四元西松烷碳环的闭合,从而完成了关键中间体化合物23的合成.

关键词: Sarsolilide A, McMurry大环化法, HWE反应, Sharpless不对称双羟化反应, 全合成

In the total synthesis of Sarsolilide A as a target molecule, the precursors 11 and 18, which were synthesized from geraniol and isobutyraldehyde respectively, were condensed via intermolecular HWE reaction. And the dihydroxyl groups at 7-C and 8-C in compound 20 were regioselectively introduced by Sharpless AD reaction. Subsequent conventional transformations afforded the cyclization precursor 5. The construction of the 14-membered cembranoid carbon ring was realized by low valent titanium induced McMurry reaction, giving compound 23 as the key intermediate.

Key words: Sarsolilide A, McMurry coupling, HWE reaction, Sharpless asymmetric dihydroxylation, total synthesis