HCID 86744489, compound → HCID 67929791, compound

Participants

Reaction Steps

A solution of 4-nitrobenzyl (4R,5S,6S)-3-[(2S,4S)-2-{2-(dimethylamino)ethyloxymethyl}-1-(4-nitrobenzyloxycarbonyl)pyrrolidin-4-yl]thio-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (1.48 g) in a mixture of tetrahydrofuran (60 ml) and 0.3 M acetate buffer (pH 5.8) (60 ml) was stirred at ambient temperature for 6 hours in the presence of 20% palladium hydroxide on carbon (0.5 g) under atmospheric pressure of hydrogen. The catalyst was filtered off and the filtrate was concentrated under reduced pressure to remove the tetrahydrofuran The resulting aqueous solution was washed with ethyl acetate (50 ml×3) and evaporated to remove the organic solvent The residual solution was subjected to a column chromatography on nonionic adsorption resin, "Diaion HP-20" (60 ml) and eluted with a mixture of acetone and water (2:98 V/V). The fractions containing the desired compound were collected and 0.5M aqueous acetic acid (1.5 ml) was added to the solution The solution was lyophilized to give (4R,5S,6S)-3-[(2S,4S)-2-{2-(dimethylamino)ethyloxymethyl}pyrrolidin-4-yl]thio-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid monoacetate (0.14 g).

Provenance & Evidence