重氮甲烷 、
[(1S,4R,5S,6R,7R)-4,8,8-Trimethyl-6-(toluene-4-sulfonyloxymethyl)-7-triethylsilanyloxy-spiro[4.4]non-1-yl]-acetic acid methyl ester 在
盐酸 、
sodium hydroxide 、
lithium diisopropyl amide 作用下,
生成 methyl (1S,2R,5S,8S,9R)-9-hydroxy-2,10,10-trimethyltricyclo[6.3.0.01,5]undecane-6-carboxylate