| abstract |
The invention provides compounds of formula I: in which the stereochemistry of the 7-azabicyclo [2.2.1] heptane ring is 1S, 2R and 4R and the C-2 carbon nitrogen substituent has the exo orientation; W is -Q, -C = C-Q, or -C = C-Q; and Q is as defined above. These compounds may be in the form of salts or pharmaceutical compositions, and are useful in pharmaceutical products used to treat diseases or conditions in which it is known to be involved a7. |