| 摘要 |
The present invention describes and claims compounds of the Structural Formula I, Structural Formula II, or Structural Formula III: wherein R1, R2, R3 and R3' are -H or methyl, or R3 and R3 taken together form a double bond, or R3' is -H and R2 and R3 taken together form a spiro-cyclopropyl substituent, R4 is -H or -F, and R5 is -H, methyl, -CI or -Br, Formula II wherein R1 is -H, ethyl-, isopropyl-, cyclopropyl-, methyl- or methoxy-, R4 is -H or -F, and "Y" is: (a) -CH2-; (b) -CR6H-0-CR7R8-, wherein R6, R7, and R8 are independently -H or methyl; (c) -CR6H-N(R9)-CR7R8-, wherein R6, R7, and R8 are independently -H or methyl; (d) -CH2-C(R9)(R10)-C(R7)(R8)-, wherein R7, R8, R9 and R10 are independently -H or -methyl, or both R7 and R8 are -F, R9 and R10 are independently -H or -methyl, or both R9 and R10 are -F, or R9 and R10 taken together are (0=), which together with the carbon to which they are attached forms a carbonyl group.
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