Cephalosporin ester derivatives, their production and use

C - Chemistry – Metallurgy – 07 – D

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260/106.1

C07D 501/36 (2006.01) A61K 31/54 (2006.01) A61K 31/545 (2006.01) C07C 67/08 (2006.01) C07D 257/04 (2006.01) C07D 277/22 (2006.01) C07D 499/42 (2006.01) C07D 501/00 (2006.01) C07D 501/02 (2006.01) C07D 501/04 (2006.01) C07D 501/20 (2006.01) C07D 501/46 (2006.01) C07D 501/56 (2006.01)

Patent

CA 1216285

CEPHALOSPORIN ESTER DERIVATIVES, THEIR PRODUCTION AND USE Abstract A compound of the formula: Image wherein R1 is a hydrogen atom or a lower alkyl group; R2 is an unsubstituted or lower alkyl-substituted alicyclic alkyl group of 3 to 12 carbon atoms or a C3-6 alicyclic alkyl-substituted lower alkyl group or a pharmaceutically acceptable.salt thereof, processes for preparing the same, and a pharmaceutical composition thereof, are provided. The compound has an improved absorbability and can be orally applied as antibiotics.

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