.beta.-lactam acetic acid derivatives, the process for...

Details .beta.-lactam acetic acid derivatives, the process for... .beta.-lactam acetic acid derivatives, the process for...

C - Chemistry, Metallurgy

07

D

260/299, 260/335

C07D 205/08 (2006.01) C07D 477/04 (2006.01) C07D 487/04 (2006.01)

Patent

CA 1185244

ABSTRACT New .beta.-lactam acetic acid derivatives I Image I wherein R represents alkyl, alkyl substituted with amino, protected amino, mono- or di-alkylamino, hydroxy, protec- ted hydroxy or alkoxy, and alkenyl, and their salts are useful as intermediates for preparing 1-azabicyclo [3.2.0]hept-2-ene antibiotics II Image II The process for preparing the .beta.-lactam acetic acid deri- vatives I as well as the overall process which starting from the acids I leads to the antibiotics II are also claimed.

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