作者:Takashi Harayama、Akihiro Hori、Georgeta Serban、Yoshiaki Morikami、Takuya Matsumoto、Hitoshi Abe、Yasuo Takeuchi
DOI:10.1016/j.tet.2004.09.016
日期:2004.11
The total synthesis of luotonin A was achieved in excellent yield by using a Pd-assisted biaryl coupling reaction of N-(bromoquinolinyl)methylquinazolinone with Cy3P and KOAc. The successive treatment of luotonin A with NBS and aq. AgNO3 gave luotonin B in good yield. Although the Pd-assisted coupling reaction of N-(2-bromoindolyl)ethylquinazolinone with Cy3P and KOAc yielded rutaecarpine in poor yield
通过使用N-(溴喹啉基)甲基喹唑啉酮与Cy 3 P和KOAc的Pd辅助联芳基偶联反应,可以以优异的产率实现褪黑素A的全合成。用NBS和水溶液连续处理褪黑素A。AgNO 3以良好的产率产生了褪黑素B。尽管N-(2-溴吲哚基)乙基喹唑啉酮与Cy 3 P和KOAc的Pd辅助偶联反应产生的芸苔胡萝卜素收率很低,但在相同的反应条件下,N-乙酸酯直接以优异的收率产生了所需的芸苔胡萝卜素。