Water → HCID 178504138, compound

Participants

Reaction Conditions

Reaction Steps

N-[5-Chloromethanesulfonylaminomethyl-4-(2,2-dimethylpropionyl)-5-phenyl-4,5-dihydro[1,3,4]thiadiazol-2-yl]-2,2-dimethylpropionamide (3.818 g, 7.807 mmol) obtained in Step 1 mentioned above was dissolved in DMF (70 mL), and tert-butyl N-(2-mercaptoethyl)carbamate (13.3 mL, 78.1 mmol) and saturated aqueous sodium hydrogencarbonate (15 mL) were added, then the mixture was stirred at 70° C. for 5.5 hours. After cooling, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (n-hexane/ethyl acetate=9/1→7/3), and then triturated with diisopropyl ether to give [2-({[3-(2,2-dimethylpropionyl)-5-(2,2-dimethyl-propionylamino)-2-phenyl-2,3-dihydro[1,3,4]thiadiazol-2-ylmethyl]sulfamoyl}-methylsulfanyl)ethyl]carbamic acid tert-butyl ester (1.926 g, 39%).

Provenance & Evidence