应用化学 ›› 1997, Vol. 0 ›› Issue (4): 111-113.

• 研究论文 • 上一篇    下一篇

混合高序铜法立体选择性合成(±)-Epilitsenolide C2

陈祖兴, 李焰, 黄精美, 黄锦霞, 徐章煌   

  1. 湖北大学化学系, 武汉 430062
  • 收稿日期:1996-08-28 修回日期:1997-05-06 出版日期:1997-08-10 发布日期:1997-08-10
  • 基金资助:
    湖北省自然科学基金

Stereoselective Synthesis of (?) Epilitsenolide C2 Using Mixed Higher Order Cyanocuprate

Chen Zuxing, Li Yan, Huang Jingmei, Huang Jinxia, Xu Zhanghuang   

  1. Department of Chemistry, Hubei University, Wuhan 430062
  • Received:1996-08-28 Revised:1997-05-06 Published:1997-08-10 Online:1997-08-10

摘要: (3Z, 4α, 5α)-二氢-4-羟基-5-甲基-3-十四烷叉基-2(3H)-呋喃酮(简称 Epilitsenolide C2(1)), 属α-烷叉基-γ-丁内酯类化合物, 该类化合物多具有高细胞毒性和抗肿瘤活性。

关键词: 烷叉基二氢羟基甲基(3H)呋喃酮, 混合高序铜, 立体选择性反应

Abstract: Lithium ( α-caralkoxyvinyl) (2-thienyl) mixed higher order cyanocuprate(3), prepared by addition reaction of ethyl propiolate with ( n-C13H27 ) (2-thienyl) CuCNLi2(2), was coupled with cis bromopropylene under Pd(PPh3)-4, gaving ethyl -1-(Z-propylidene)-2-furanone(1) was then selectively synthesized through epoxidation of the diene ester with m chloroperbenzoic acid as oxidant and stereospecific lactonation by acid catalysis. The title compound(1) showed E: Z >98:2 and cis:trans >96:4. The method proposed has advantages of short route and high yield. Thus a new efficient method is presented for stereo selective synthesis of 3 alkylidene 4,5 dihydro 4 hydroxy 5 methyl 2(3H) furanones.

Key words: Epilitsenolide C2, alkylidene-dihydro-hydroxy-methyl-furanone, mixed higher order cyanocuprate, steoreoselective synthesis