有机化学 ›› 2000, Vol. 20 ›› Issue (6): 910-914. 上一篇    下一篇

研究论文

1,4-苯并二噁烷类新木脂素Eusiderin G的全合成

汪秋安;孙朝旭   

  1. 湖南大学化学化工学院
  • 发布日期:2000-12-25

A facile total synthesis of 1,4-benzodioxane type neolignans, eusiderin G

Wang Qiuan;Sun Chaoxu   

  • Published:2000-12-25

以没食子酸甲酯为原料,经过6步反应(总产率为24%),对1,4-苯并二噁烷类新? 局靥烊徊顴usiderinG进行了全合成。合成反应的关键是在强酸性离子交换? 髦呋拢肿幽诘拇剪腔敕郁腔浞⑸阉从Γ鼗沸纬?,4-苯并二噁烷骨架化合物。该合成路线具有简便易行、产率较高、副反应少的特点,可适用于其它具有生理活性的1,4-苯二噁烷类化合物的合成。

关键词: 苯并二恶烷, 木脂素, 全合成, 没石子酸甲酯

An efficient transformation of methyl gallate to eusiderin G7, a neolignan with 1,4-benzodioxane nuclei, in six steps with 24% overall yield is reported. This route is distinctly shorter, more economic and efficient than any of the previous approaches to the target reported in the literature. the key step is a cyclization of an dihydroxy intermediate 4 catalysted by a strong acid ion exchange resin to give 1,4-benzodioxane skeleton.

Key words: LIGNANS, TOTAL SYNTHESIS

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