ethyl (2R)-8-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-2-((4R)-2,2-dimethyl[1.3]dioxolan-4-yl)-1,4-dioxaspiro[4.5]dec-6-ene-7-carboxylate 在
水 、
溶剂黄146 作用下,
以59%的产率得到ethyl (2R)-8-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-2-((1R)-1,2-dihydroxyethyl)-1,4-dioxaspiro[4.5]dec-6-ene-7-carboxylate