| 摘要 |
Benzophenones of the formula <IMAGE> I <IMAGE> wherein X1 is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms, X2 is selected from the group consisting of hydrogen, halogen and alkoxy of 1 to 5 carbon atoms, m is a whole number from 1 to 10, n is a whole number from 2 to 5 and Y is in the 2,3 or 4-position and is selected from the group consisting of hydrogen, halogen, CF3-, CF3O-, CF3S-, alkyl of 1 to 8 carbon atoms and alkoxy of 1 to 8 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts having analgesic activity and their preparation.
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