{(S)-1-[Hydroxy-(5-methyl-[1,2,4]oxadiazol-3-yl)-methyl]-pentyl}-carbamic acid (S)-2-cyclohexyl-1-methyl-ethyl ester 在
2,2,6,6-tetramethyl-piperidine-N-oxyl 、
sodium hypochlorite 、 potassium bromide 作用下,
以
二氯甲烷 为溶剂,
以72%的产率得到[(S)-1-(5-Methyl-[1,2,4]oxadiazole-3-carbonyl)-pentyl]-carbamic acid (S)-2-cyclohexyl-1-methyl-ethyl ester