New Synthetic Method for Indole-2-carboxylate and Its Application to the Total Synthesis of Duocarmycin SA
作者:Kou Hiroya、Shigemitsu Matsumoto、Takao Sakamoto
DOI:10.1021/ol0489548
日期:2004.8.1
aryl halides and methyl propiolate were investigated. The electron-withdrawing groups on the aromatic ring are essential for producing the methyl indole-2-carboxylate derivatives. On the other hand, the presence of an extra methyl propiolate and Pd(PPh3)4 were required to provide an efficient catalytic system for the cyclization reactions. This reaction was used for the total synthesis of duocarmycin
研究了芳基卤化物与丙酸甲酯之间的顺序偶联和环化反应。芳环上的吸电子基团对于生产吲哚-2-羧酸甲酯衍生物是必不可少的。另一方面,需要额外的丙酸甲酯和Pd(PPh3)4的存在才能为环化反应提供有效的催化体系。该反应用于杜卡霉素SA的全合成。