Octadecanoic acid (2S,3R,4S)-1,7,7-trimethyl-3-(methyl-phenyl-carbamoyloxy)-bicyclo[2.2.1]hept-2-yl ester 、
碘甲烷 在
lithium cyclohexylisopropylamide 作用下,
生成 (R)-2-Methyl-octadecanoic acid (2S,3R,4S)-1,7,7-trimethyl-3-(methyl-phenyl-carbamoyloxy)-bicyclo[2.2.1]hept-2-yl ester 、 (S)-2-Methyl-octadecanoic acid (2S,3R,4S)-1,7,7-trimethyl-3-(methyl-phenyl-carbamoyloxy)-bicyclo[2.2.1]hept-2-yl ester