Hydrochloric Acid → HCID 67619234, compound

Participants

Reaction Steps

1.0 g of 4-nitrobenzyl (1R, 5S, 6S)-2-{(2S, 4S)-2-[(3S)-3-(4-nitrobenzyloxycarbonyl)aminopyrrolidin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidin-4-ylthio}-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate [prepared as described in step (a) above] were dissolved in 30 ml of a 2:1 by volume mixture of tetrahydrofuran and water, after which 1.0 ml of 1N aqueous hydrochloric acid was added, and the mixture was hydrogenated by bubbling hydrogen through in at room temperature for 2 hours in the presence of 1.5 g of 10% w/w palladium-on-charcoal. The catalyst was filtered off, and the filtrate was washed with diethyl ether. The washed aqueous solution was concentrated by evaporation under reduced pressure, and the residue was purified by reverse phase column chromatography through 19 ml of Cosmo Sil 75C18 -PREP (a trade mark for a product of Nacalai Tesque), using water as the eluent. Those fractions containing the title compound were combined, concentrated by evaporation under reduced pressure and lyophilized to give 169 mg of the title compound as a powder.

Provenance & Evidence