benzyl (1S,2S,3S,4S,4aR,11bS)-1,2,3,4-tetrakis(methoxymethoxy)-2,3,4,4a,6,11b-hexahydro-[1,3]dioxolo[4,5-j]phenanthridine-5(1H)-carboxylate 在
Dowex-50WX
2-400 作用下,
以
甲醇 为溶剂,
反应 14.0h,
以80%的产率得到benzyl (1S,2S,3S,4S,4aR,11bS)-1,2,3,4-tetrahydroxy-2,3,4,4a,6,11b-hexahydro-1H-[1,3]dioxolo[4,5-j]phenanthridine-5-carboxylate