| 摘要 |
<p>A compound of the formula; <CHEM> wherein R<0> stands for hydrogen atom, nitrogen-containing heterocyclic group, acyl group or esterified carboxyl group, Z stands for S, S->-O, O or CH2, R<4> stands for hydrogen atom, methoxy group or formamido group, R<1><3> stands for hydrogen atom, methyl group, hydroxyl group or halogen atom and A stands for an optionally substituted imidazol-1-yl group forming a condensed ring at the 2,3- or 3,4-position or a physiologically or phamaceutically acceptable salt or ester thereof. This compound is novel and has excellent antibacterial activity.</p> |
