(2R,4S)-1-[N-{1-(S)-(3,5-bistrifluoromethylphenyl)ethyl}-N-methyl]aminocarbonyl-4-ethoxycarbonyl-2-(4-fluoro-2-methylphenyl)piperidine 生成
(2R,4S)-1-[N-{1-(S)-(3,5-bistrifluoromethylphenyl)ethyl}-N-methyl]aminocarbonyl-4-carboxy-2-(4-fluoro-2-methylphenyl)piperidine