ethyl (S)-3-{3'-[(benzoylmethylamino)methyl]biphenyl-4-yl}-2-tert-butoxycarbonylaminopropionate 、
methyl (R)-2-TERT-BUTOXYCARBONYLAMINO-3-(3`-METHYL-AMINOMETHYLBIPHENYL-4-YL) propionate 、 以are obtained with an 85% yield的产率得到methyl (R)-3-{3'-[(benzoylmethylamino)methyl]biphenyl-4-yl}-2-tert-butoxycarbonylaminopropionate