Oxacephalosporin derivatives

Details Oxacephalosporin derivatives Oxacephalosporin derivatives

C - Chemistry, Metallurgy

07

D

167/187, 260/244

C07D 498/04 (2006.01) A61K 31/535 (2006.01) C07D 505/00 (2006.01)

Patent

CA 1209997

- 60 - Abstract of the disclosure: A 7.beta.-ureidoacetamido-7.alpha.-methoxy-3-[1-(2- hydroxyethyl)-1H-tetrazol-5-yl]thiomethyl-1-dethia-1-oxa-3- cephem-4-carboxylic acid derivative represented by the following formula: Image wherein R is aryl or heteroaryl; R1 is hydrogen or alkyl optionally substituted by halogen or pyridinium; R2 is hydrogen or a hydroxy-protecting group; and R3 is hydrogen, a light metal, or a carboxy-protecting group.

442647

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