6-(4-(3-chloro-4-ethoxyphenyl)-2-cyclopentyl-2-hydroxybutyl)-2,2-dimethyl-4H-1,3-dioxin-4-one 在
dimethyl sulfide borane 、
potassium carbonate 作用下,
以
甲醇 为溶剂,
生成 6-[2-(3-chloro-4-ethoxy-phenyl)-ethyl]-6-cyclopentyl-3-(5,7-dimethyl-[1,2,4]triazolo[1,5]pyrimidin-2-ylmethyl)-4-hydroxy-5,6-dihydro-pyran-2-one