3-((Acetyloxy)methyl)-7-amino-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid → HCID 21493851, compound

Participants

Reaction Steps

A mixture of 1 g of 3-[(acetyloxy)methyl]-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid and 1.2 g of 2-chloromethyl-4-methoxymandelic acid chloride in 200 ml of ethyl acetate is refluxed for 50 minutes after which the solvent is removed under high vacuum. The resulting product is chromatographed on silica gel using benzene-actone as the eluant. The product obtained is triturated with ether to give 3-[(acetyloxy)methyl]-7-[[2-[2-(chloromethyl)-4-methoxyphenyl]-2-hydroxyacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid. M.P. 140°-142°C (dec.).

Provenance & Evidence