2'-formyl-8c-hydroxy-6',7'-bis-methoxycarbonyloxy-3',4'-dihydro-8H,2'H-(7rN)-spiro[indeno[4,5-d][1,3]dioxole-7,1'-isoquinolin]-6-one 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 、
乙醚 为溶剂,
生成 7,8,6',8'-tetrahydro-6
H-(7'
rN)-spiro[[1,3]dioxolo[4,5-
g]isoquinoline-5,7'-indeno[4,5-
d][1,3]dioxole]-6'
t,8'
c-diol