1,2-methylenedioxy quino-benzothiazine derivatives having the formula ##STR1## wherein R.sub.2 is a substituent and R.sub.1 is hydrogen or a carboxy protecting group. The compounds of the invention have antibacterial activity.
1,2-亚甲二氧基喹诺-苯并
噻嗪衍
生物具有以下
化学式 ##STR1## 其中R.sub.2是一个取代基,R.sub.1是氢或羧基保护基。该发明的化合物具有抗菌活性。