6-tert-butyl-N-[3-(diethylsulfamoyl)phenyl]-8-isocyanato-4-oxochromene-2-carboxamide 、
8-(3-Amino-benzenesulfonylamino)-6-tert-butyl-chroman-2,2-dicarboxylic acid diethyl ester 生成 Diethyl 6-tert-butyl-8-[[3-[[6-tert-butyl-2-[[3-(diethylsulfamoyl)phenyl]carbamoyl]-4-oxochromen-8-yl]carbamoylamino]phenyl]sulfonylamino]-3,4-dihydrochromene-2,2-dicarboxylate