甲醇 、 cordatolide B 在
盐酸 作用下,
反应 0.5h,
以16%的产率得到12-O-methylcordatolide B
参考文献:
名称:
New methylethers of cordatolides from Calophyllum cordato-oblongum and their synthesis
摘要:
Twigs of Calophyllum cordato-oblongum Thw. have been shown to contain cordatolide A-OMe, cordatolide B-OMe, cordatolide C-OMe, cordatolide A, cordatolide B, oblongulide, cordatooblongic acid, friedelin, canophyllol, and sitosterol. Methylation of cordatolide B and the attempted methylation of cordatolide A under acidic conditions gave cordatolide B-OMe and 11,12-anhydrocordatolide. Cordatolide A-OMe, cordatolide C-OMe and 11,12-anhydrocordatolide are new compounds.