| abstract |
The invention provides pharmaceutical compounds of the formula: <IMAGE> in which A - - - B is CH2-CH2 or CH=CH; X is a pyridine or benzene ring; when X is pyridine n is 0; when X is benzene n is 0, 1 or 2 and when A - - - B is CH2-CH2, R1 is attached at any of the positions 7 to 10, and when A - - - B is CH=CH, R1 is attached at any of the positions 5 to 10; and salts thereof. |