HCID 10509391, compound → (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-8-oxo-3-[(Z)-(2-oxo-1-phenylazetidin-3-ylidene)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

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Reaction Steps

384 mg (0.5 mmol) (6R,7R)-7-[(Z)-2-(2-Amino-thiazol-4-yl)-2-trityloxyimino-acetylamino]-8-oxo-3-[(Z)-2-oxo-1-phenyl-azetidin-3-ylidenemethyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid were stirred for 75 min in 4 ml of 90% formic acid. The suspension is concentrated in vacuo and the residue triturated with 50 ml of ethyl acetate. The solid was filtered off, dried and stirred for 1 hour with 20 ml of 90% ethanol. The product was isolated by filtration, washed with n-hexane and dried.

Provenance & Evidence