HCID 15117432, compound → HCID 15117446, compound

Participants

Reaction Steps

A solution of 4-nitrobenzyl (5R,6S)-6-[(1R)-1-hydroxyethyl]-3-[(4R)-3-(4-nitrobenzyloxycarbonyl)thiazolidin-4-yl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (2.00 g) in a mixture of tetrahydrofuran (30 ml) and phosphate buffer (pH 6.5) (30 ml) was hydrogenated under atmospheric pressure of hydrogen over palladium hydroxide on carbon (20%, 0.6 g) for 3 hours at ambient temperature. The catalyst was filtered off and the filtrate was concentrated under reduced pressure to give an aqueous solution. The solution was washed with ethyl acetate, subjected to a column chromatography on silica gel (75 g), and eluted with a mixture of acetonitrile and 75:25, V/V). The fractions containing the object compound were collected and lyophilized to give (5R,6S)-6-[(1R)-1-hydroxyethyl]-3-[(4R)-thiazolidin-4-yl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid (0.06 g) as a solid.

Provenance & Evidence