2-(4-cyclopropylphenyl)-3-[2-(4-methoxyphenyl)ethyl]-1-methyl-4-oxo-1,3,8-triaza-spiro[4.5]decane-8-carboxylic acid amide 生成 (S)-2-(4-cyclopropylphenyl)-3-[2-(4-methoxyphenyl)ethyl]-1-methyl-4-oxo-1,3,8-triaza-spiro[4.5]decane-8-carboxylic acid amide 、 (R)-2-(4-cyclopropylphenyl)-3-[2-(4-methoxyphenyl)ethyl]-1-methyl-4-oxo-1,3,8-triaza-spiro[4.5]decane-8-carboxylic acid amide