First Total Synthesis of Artepillin C Established by <i>o</i><i>,</i><i>o</i><i>‘</i>-Diprenylation of <i>p</i>-Halophenols in Water
作者:Yoshihiro Uto、Akihiko Hirata、Tomoya Fujita、Syunsuke Takubo、Hideko Nagasawa、Hitoshi Hori
DOI:10.1021/jo0056904
日期:2002.4.1
We have demonstrated that prenylation of p-halophenols was dependent on the solvent effect and succeeded in o,o'-diprenylation of p-halophenols in water. Following the Mizoroki-Heck coupling of the diprenyl-p-iodophenol 3c with methyl acrylate and then hydrolysis, we first synthesized artepillin C [3-4-hydroxy-3,5-di(3-methyl-2-butenyl)phenyl}-2(E)-propenoic acid] (1), which is a biologically active constituent of propolis. These reactions may be applicable to the synthesis of various useful natural products such as 2,4,6-trisubstituted phenol derivatives.