(E)-3-[4-(1-ethyl-propylamino)-6-(4-fluoro-2-methyl-phenyl)-2-methylsulfanyl-pyrimidin-5-yl]-acrylic acid methyl ester 、
sodium methylate 在
8-(1-ethylpropyl)-4-(4-fluoro-2-methylphenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one 作用下,
以to afford the title compound 8-(1-ethyl-propyl)-4-(4-fluoro-2-methyl-phenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one的产率得到8-(1-ethylpropyl)-4-(4-fluoro-2-methylphenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one