HCID 88373970, compound → HCID 53768074, compound

Participants

Reaction Steps

A mixture of 200 mg of the product of Step B dissolved in 5 ml of 66% formic acid was stirred for 1 hour at ambient temperature and then was concentrated to dryness under reduced pressure at less than 30° C. The residue was dissolved in a mixture of acetonitrile and methanol and the solvent was evaporated to obtain 110 mg of 1,1-dimethylethyl 7-[2-(2-aminothiazol-4-yl)-2-methoxyimino-acetamido]-8-oxo-3-phenylthio-4-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylate which after crystallization from ether had an Rf=0.42 (CH2C2 -MeOH (9-1).

Provenance & Evidence