作者:Francis Rouessac、Anne Leclerc
DOI:10.1080/00397919308018592
日期:1993.4
Abstract An improved procedure for the preparation of isofraxidin 1 a well known natural coumarin, through transformation of syringaldehyde is reported. The cyclization of 7 to the coumarinic carboxylic acid 8 is readily performed by cold concentrated sulfuric acid. The overall yield to 1 by this convenient route is near 50%.
摘要 报道了一种通过丁香醛转化制备异弗拉西丁 1 一种众所周知的天然香豆素的改进方法。7 环化为香豆素羧酸 8 很容易通过冷浓硫酸进行。通过这种方便的途径对 1 的总产率接近 50%。