Five simple preparative methods of (±)-prostaglandin B1 (PGB1) methyl ester are described. All routes were started from a common intermediate, 7-(2-hydroxy-5-oxo-1-cyclopentenyl)heptanoic acid derived from cyclooctanone via two steps. The key reaction of these routes is a palladium-catalyzed vinylation. The methods provided other PGB1 congeners and are applicable to synthesize 11-functionalized PG systems.
本文描述了(±)-
前列腺素B1甲酯的五种简单制备方法。所有路线均以共用中间体——由
环辛酮经两步反应得到的7-(2-羟基-5-氧代-1-
环戊烯基)
庚酸为起点。这些路线的关键反应是
钯催化的
乙烯基化反应。所提供的方法还适用于合成其他
PGB1类似物,并可应用于11-功能化的
前列腺素系统的合成。