Formic Acid → HCID 88420577, compound

Participants

Reaction Steps

329 mg of the compound of Step A and 9.6 ml of a 33% aqueous solution of formic acid were mixed together and heated for 25 minutes at +65° C., then cooled, diluted with water, filtered, and concentrated to dryness by distilling under reduced pressure. The residue was triturated in water and the insoluble matter formed was eliminated by filtering, and after concentrating to dryness, 142 mg of 7-[2-(2-aminothiazol-4-yl)-2(Z)-methoxyimino-acetamido]-3-[3-(1-methyl-1H-1,2,3,4-tetrazol-5-yl)thio-propen-(E)-yl]-8-oxo-4-thia-1-azabicyclo [4,2,0]oct-2-en-2-carboxylic acid with a specific rotation of [α]D20 =-99° (c=0.8% DMSO) were obtained.

Provenance & Evidence