Acetic Acid → HCID 23388261, compound

Participants

Reaction Steps

Acetic acid (0.36 ml) and 2.0 ml of a 1 M-tetra-n-butylammonium fluoride/THF solution were added under ice cooling to a solution of 273 mg, of 4-nitrobenzyl (1S,5R,6S)-2-[7-[N-(2-t-butyldimethylsilyloxyethyl)-N-methylsulfamoyl]imidazo[5,1-b]thiazol-2-yl]-6-((1R)-1-hydroxyethyl)-1-methyl-1-carbapen-2-em-3-carboxylate in 8 ml of THF. The mixture was stirred at room temperature for 6 hr. The reaction mixture was added to a dilute aqueous sodium hydrogencarbonate solution, and the mixture was extracted with dichloromethane. The organic layer was dried over anhydrous magnesium sulfate. The solvent was removed by distillation. The residue was purified by column chromatography on silica gel (dichloromethane:methanol=10:1) to give 175 mg of 4-nitrobenzyl (1S,5R,6S)-6-((1R)-1-hydroxyethyl)-2-[7-[N-(2-hydroxyethyl)-N-methyl-sulfamoyl]imidazo[5,1-b]thiazol-2-yl]-1-methyl-1-carbapen-2-em-3-carboxylate.

Provenance & Evidence