(1R,4S)-1-{[(3aS,4S,7R,7aS)-2,2-dimethyl-3a,4,7,7a-tetrahydro-4,7-(epoxyimino)-1,3-benzodioxol-8-yl]carbonyl}-7,7-dimethylbicyclo[2.2.1]heptan-2-one 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 、
甲苯 为溶剂,
生成
(1RS,4SR,7RS,8RS)-(+/-)-7,8-O-Isopropylidenedioxy-2-oxa-3-azabicyclo<2.2.2>oct-5-ene