(3E,5S)-1-{1-[(2'-methylbiphenyl-4-yl)carbonyl]}-5-(3-{[2-(triethylsilyl)oxy]ethyl}-1,2,4-oxadiazol-5-yl)pyrrolidin-3-one O-methyloxime 、 (3Z,5S)-1-{1-[(2'-methylbiphenyl-4-yl)carbonyl]}-5-(3-{[2-(triethylsilyl)oxy]ethyl}-1,2,4-oxadiazol-5-yl)pyrrolidin-3-one O-methyloxime 在
水 、
三氟乙酸 作用下,
以
乙腈 为溶剂,
以30%的产率得到(3Z,5S)-5-[3-(2-hydroxyethyl)-1,2,4-oxadiazol-5-yl]-1-[(2'-methylbiphenyl-4-yl)carbonyl]-3-pyrrolidinone O-methyloxime