Benzhydryl 7-Amino-3-chloromethyl-3-cephem-4-carboxylate → HCID 88485747, compound

Participants

Reaction Steps

To a solution of diphenylmethyl 7-amino-3-chloromethyl3-cephem-4-carboxylate (VIa) (685 mg, 1.65 mmol) in THF (8.3 ml) was added benzotriazol-1-yl 2-(2-aminothiazol-4-yl)2-(Z)-(diphenylmethyloxycarbonyl-(3,4-dihydroxyphenyl) methyl]oxyiminoacetate (IIIa) (955 mg, 1.50 mmol) and the mixture was stirred for 5 hr at room temperature. The reaction mixture was diluted with ethyl acetate, washed with water dried over MgSO4 and concentrated under reduced pressure. The crude product was chromatographed on a column of silica gel to afford 566 mg (41% yield) of the title compound.

Provenance & Evidence