3-carbethoxy-3-<<4-(benzyloxy)phenyl>methyl>-5(S)-<1'-(S)-<(tert-butyloxycarbonyl)amino>-2-phenylethyl>dihydrofuran-2(3H)-one 在
lithium hydroxide 作用下,
生成 3(S)-<<4-(benzyloxy)phenyl>methyl>-5(S)-<1'-(S)-<(tert-butyloxycarbonyl)amino>-2-phenylethyl>dihydrofuran-2(3H)-one 、 3(R)-<<4-(benzyloxy)phenyl>methyl>-5(S)-<1'-(S)-<(tert-butyloxycarbonyl)amino>-2-phenylethyl>dihydrofuran-2(3H)-one