| 摘要 |
<p>This invention relates to compounds having the structure I or a pharmaceutically acceptable salt thereof wherein R1 is hydrogen, halogen, hydroxy, alkanoyloxy, alkoxy, alkylthio, alkyl, trifluoromethyl or methylenedioxy; R2 is hydrogen, halogen, alkyl, alkoxy, alkylthio, or trifluoromethyl; m is 1 or 2; and n is O, 1 or 2 and a process for preparing these compounds which have useful sedative and muscle relaxant activity, and can be used as tranquilizers. The intermediates for these compounds and a process for preparing these are also included.</p> |
