mariesiic acid A 在
吡啶 、
manganese(IV) oxide 作用下,
反应 2.0h,
生成 4-Dimethylamino-benzoic acid (E)-(R)-1-[(R)-2-((3R,5R,9S,10R,13S,17S)-3-hydroxy-4,4,10,13,17-pentamethyl-2,3,4,5,6,9,10,11,12,13,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-propyl]-3-methoxycarbonyl-but-2-enyl ester