| abstract |
The present invention relates to a compound of formula (I) or a stereoisomer thereof, a pharmaceutically acceptable salt or a prodrug, a pharmaceutical preparation, a pharmaceutical composition, and a new method for general anesthesia or sedation of mammals. A kit, an article of manufacture of the pharmaceutical composition, and a method of using the pharmaceutical composition. The definitions of R 1 , R 2 and n are as described in the specification. |