| 摘要 |
The compounds of the formula (II): <CHEM> and salts and cleavable esters thereof wherein R1 is a OH, OR2, OCOR3, O.CO.OR4, O.SO2R5, N3 or NH2 group wherein R2 is a lower alkyl group, a substituted lower allyl group or an aralkyl group; R1 is a lower ally group, a substituted lower alkyl group, an aryl group or an aralkyl group; R4 is a lower alkyl group, a substituted lower alkyl group, an aryl group or an aralkyl group; and R5 is a lower alkyl group, or a tolyl group are antibacterially effective agents. Process for their preparation and their use are described. |
