Sodium Bicarbonate → HCID 23388255, compound

Participants

Reaction Steps

4-Nitrobenzyl(1S,5R,6S)-6-((1R)-1-hydroxyethyl)-1-methyl-2-(5-methyl-7-methylthioimidazo[5,1-b]thiazol-2-yl)-1-carbapen-2-em-3-carboxylate (315 mg) was dissolved in 6 ml of THF and 6 ml of water. To the solution was added 368 mg of OXONE (manufactured by Du Pont (E.I.) de Nemours & Co.) under ice cooling. The mixture was stirred at the same temperature for 1.5 hr. An aqueous sodium hydrogencarbonate solution was added thereto, followed by extraction with dichloromethane. The extract was dried over anhydrous magnesium sulfate. The solvent was removed by distillation under the reduced pressure. The residue was purified by column chromatography on silica gel (dichloromethane:methanol=20:1 to 10:1). Of two main components, the fraction, which had been eluted earlier, was concentrated under the reduced pressure to give 145 mg of 4-nitrobenzyl(1S,5R,6S)-6-((1R)-1-hydroxyethyl)-2-(7-methanesulfonyl-5-methylimidazo[5,1-b]thiazol-2-yl)-1-methyl-1-carbapen-2-em-3-carboxylate.

Provenance & Evidence