2β-carbomethoxy-7β-methoxymethoxy-8-methyl-3-oxo-8-azabicyclo{3.2.1}octane 、
7-hydroxy-2-methoxycarbonyl-8-methyl-3-oxo-8-azabicyclo{3.2.1}octane 在
sodium tetrahydroborate 作用下,
以
甲醇 、
氯仿 为溶剂,
以52%的产率得到2β-carbomethoxy-3α-hydroxy-7β-methoxymethoxy-8-methyl-8-azabicyclo{3.2.1}octane