| 摘要 |
PURPOSE:Title compounds of formula i (A is mono-or polycylic, N-containning, 6-membered aromatic hetero ring; R1 is OH, amino, ureido, etc.; R2, R3 are H, NO2, amino, etc.) and salts thereof; for example, 7-[D-alpha-(4-hydroxy-1,5naphthylidene-3-carbonamido)-alpha-p-hydrozyp henyl acetamido]-3-azidomethyl3-cephem-4-carboxylic acid sodium salt. |
