8β-4'-hydroxy-5'-<4"-hydroxytigloyloxy>-tigloyloxy-3-dehydro-4β,15-dihydrozaluzanin C 、
乙酸酐 反应 1.0h,
生成 (E)-4-Acetoxy-2-methyl-but-2-enoic acid (E)-4-acetoxy-2-((3aR,4R,6aR,9S,9aR,9bR)-9-methyl-3,6-dimethylene-2,8-dioxo-dodecahydro-azuleno[4,5-b]furan-4-yloxycarbonyl)-but-2-enyl ester