PROCESS FOR PRODUCING NEW CEPHALOSPORIN DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM AS ACTIVE COMPONENTS

摘要

PCT No. PCT/EP90/02189 Sec. 371 Date Jun. 12, 1992 Sec. 102(e) Date Jun. 12, 1992 PCT Filed Dec. 14, 1990 PCT Pub. No. WO91/09036 PCT Pub. Date Jun. 27, 1991.Cephalosporins of the formula (I): (I) wherein m is one or two; n is zero, one or two; A and B are organic residues; and R1 and R2 are halogen or hydrogen atoms or organic groups are endowed with elastase inhibitory activity. Two processes for their preparation starting from the corresponding 4-acyl cephem are also provided.