| 摘要 |
Novel 2,3,5,8-tetrahydrofuro- and 5,8- dihydrofuro[3,2-b]- 1,8-naphthyridine compounds of the formula (I) …<CHEM>… wherein R<1> represents an alkyl group having 1 to 6 carbon atoms and M represents a hydrogen atom, an alkali metal or an alkaline earth metal, having anti-bacterial activity, a process for the preparation of these compounds and a pharmaceutical composition. |
