(1R,4S)-1-{[(3aR,4S,7R,7aS)-7a-hydroxy-3a,4,7,7a-tetrahydro-4,7-(epoxyimino)-1,3-benzodioxol-8-yl]carbonyl}-7,7-dimethylbicyclo[2.2.1]heptan-2-one 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
以74%的产率得到(1R,4S)-1-{[(1S,4R,7S,8S)-7,8-dihydroxy-2-oxa-3-azabicyclo[2.2.2]oct-5-en-3-yl]carbonyl }-7,7-dimethylbicyclo[2.2.1]heptan-2-one