Intermediates for the preparation of monosulfactams

Details Intermediates for the preparation of monosulfactams Intermediates for the preparation of monosulfactams

C - Chemistry, Metallurgy

07

D

260/310.5

C07D 277/38 (2006.01) C07C 239/20 (2006.01)

Patent

CA 1308109

ABSTRACT This invention relates to compounds having the formula: Image wherein A1 is a carboxyl protecting group, A2 is hyd- rogen or an amino protecting group, and R3 and R4 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms, which are useful as intermediates in the preparation of monocyclic .beta.-lactam antibiotics of the formula: Image and pharmaceutically acceptable salts thereof, which possess antibacterial activity.

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