申请人:Hoffmann-La Roche Inc.
公开号:US04244867A1
公开(公告)日:1981-01-13
A multistep process is presented for the preparation of imidazobenzodiazepines of the formula ##STR1## wherein X is selected from the group consisting of hydrogen, halogen, nitro and trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen or trifluoromethyl; R.sub.1 is hydrogen or lower alkyl and R.sub.2 is a disubstituted amine Also presented are novel intermediates utilized in the process. The end products and intermediates are useful as sedatives, anxiolytics, muscle relaxants and anticonvulsants. The end products are especially useful in intravenous compositions for use in preoperative anesthesia.
本发明提供了一种制备式为##STR1##的咪唑苯并二氮平的多步骤过程,其中X选自氢、卤素、硝基和三氟甲基的群组;Y选自氢、卤素或三氟甲基的群组;R.sub.1是氢或较低的烷基,而R.sub.2是二取代胺。本发明还提供了在该过程中使用的新型中间体。所得的终产品和中间体可用作镇静剂、抗焦虑剂、肌肉松弛剂和抗惊厥剂。终产品在静脉注射组成物中特别有用,用于术前麻醉。