| 摘要 |
This invention provides new compounds of formula I, <IMAGE> I wherein R1 is hydrogen or alkyl of 1 to 5 carbon atoms, R2 is a group <IMAGE> wherein N IS A WHOLE NUMBER FROM 0 TO 3, R5 and R6, independently, are hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen of atomic number from 9 to 35, or together are 3,4-methylenedioxy, R7 is hydrogen, or when both R5 and R6 are alkoxy of 1 to 4 carbon atoms also may be alkoxy of 1 to 4 carbon atoms, R3 is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, or halogen of atomic number from 9 to 35, and R4 is hydrogen or alkoxy of 1 to 4 carbon atoms, USEFUL AS SLEEP-PROMOTING AGENTS, AND ANTI-AGGRESSIVE AGENTS.
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