| 摘要 |
The present invention concerns tropane derivatives of the formula <IMAGE> wherein R1 and R2 are, independently, hydrogen, halogen, trifluoromethyl, lower alkyl or lower alkoxy, R3 and R4 are, independently, lower alkyl, n is 0, 1 or 2, and p0 X(-) is the anion of a pharmaceutically acceptable salt-forming acid. |
