1-[(1'S,4R,4'R)-4-(hydroxymethyl)-7',7'-dimethylspiro[1,3-dioxolane-2,2'-bicyclo[2.2.1]heptane]-1'-yl]-N,N-di(propan-2-yl)methanesulfonamide 、
叔丁醇 在
乙酸酐 、
pyridinium chlorochromate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以62%的产率得到tert-butyl (1'S,4S,4'R)-1'-[di(propan-2-yl)sulfamoylmethyl]-7',7'-dimethylspiro[1,3-dioxolane-2,2'-bicyclo[2.2.1]heptane]-4-carboxylate