Acetic acid (S)-1-(1-acetoxy-2-oxo-ethyl)-5-(1,3-dimethyl-7-methylsulfanyl-2,4-dioxo-1,2,3,4-tetrahydro-pteridin-6-yl)-2-methyl-5-oxo-pentyl ester 在
镍 ammonium hydroxide 、 sodium dithionite 、
碘 、
sodium acetate 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
反应 23.0h,
生成 6-[(4S)-5-(1,3-dimethyl-2,4-dioxopteridin-6-yl)-1,5-dihydroxy-4-methylpentyl]-1,3-dimethylpteridine-2,4-dione