(2S,3S)-1-tert-butoxycarbonyl-3-[(6-methoxy-1-methyl-2-oxo-4H-3,1-benzoxazin-7-yl)methyl]amino-2-phenylpiperidine 、 (2S,3S)-3-(6-Isopropoxy-1-methyl-2-oxo-1,2,3,4-tetrahydro-quinolin-7-yl)methyl amino-2-phenylpiperidine dihydrochloride 生成 (2S,3S)-3-[(6-Methoxy-1-methyl-2-oxo-4H-3,1-benzoxazin-7-yl)methyl]-amino-2-phenylpiperidine Dihydrochloride