重氮甲烷 、
(2S,3S,4S)-N-benzoyl-2-hydroxymethyl-3-tert-butoxycarbonylmethyl-4-(4-methoxyphenyl)pyrrolidine 在
ruthenium trichloride 、
sodium periodate 作用下,
生成 (2R,3S,4S)-N-benzoyl-2-methoxycarbonyl-3-tert-butoxycarbonylmethyl-4-(4-methoxyphenyl)pyrrolidine 、 (2S,3S,4S)-N-benzoyl-2-methoxycarbonyl-3-tert-butoxycarbonylmethyl-4-(4-methoxyphenyl)pyrrolidine