| 摘要 |
<p>The specification discloses a compound having the formula I wherein A is I or wherein R1 is hydrogen or formyl; R is or ; Y is hydrogen, chlorine, bromine, fluorine, trifluoromethyl, amino, nitro, hydroxy, (lower) alkyl of 1-4 carbon atoms or (lower)alkoxy of 1-4 carbon atoms; R2 is (lower)alkyl of 1-4 carbon atoms and wherein A1 is methyl or -(CH2)nCOOH and n is one or two; or an easily hydrolyzed ester or nontoxic pharmaceutically acceptable salt thereof. The specification further discloses a compound of formula I wherein A is H. There is also disclosed a process for the preparation of the compounds, an easily hydrolyzed ester or nontoxic pharmaceutically acceptable salt thereof. The compound of the formula I according to the present invention is effective in the treatment of bacterial infections in man.</p> |
