Jiang Xin-peng, Xueyan Wang, Hua Xing
Jul 1, 2017
Citations
0
Influential Citations
3
Citations
Journal
Journal of Saudi Chemical Society
Abstract
Abstract The key intermediate of misoprostol, methyl 7-(3-hydroxy-5-oxocyclopent-1-en-1-yl)-heptanoate was prepared from commercially available suberic acid in 40% yield over five steps. The key step involved a ZnCl 2 catalyzed Friedel-Crafts reaction between furan and 2,9-oxonanedione. Sulfuric acid catalyzed methylation of 8-(furan-2-yl)-8-oxooctanoic acid followed by sequential reduction and ZnCl 2 catalyzed Piancatelli rearrangement resulted in the formation of the key intermediate of misoprostol.