[(S)-1-(3,3-difluoro-2-hydroxy-6-oxo-piperidin-1-ylmethyl)-3-(2-thiophen-3-yl-4-trifluoromethyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-3-oxo-propyl]-carbamic acid t-butyl ester 生成 [(S)-1-(3,3-difluoro-(R)-2-hydroxy-6-oxo-piperidin-1-ylmethyl)-3-(2-thiophen-3-yl-4-trifluoromethyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-3-oxo-propyl]-carbamic acid t-butyl ester 、 [(S)-1-(3,3-difluoro-(S)-2-hydroxy-6-oxo-piperidin-1-ylmethyl)-3-(2-thiophen-3-yl-4-trifluoromethyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-3-oxo-propyl]-carbamic acid t-butyl ester