Patent ID: 7459480

Claim:
A compound of the formula wherein B is —C≡C— or —CHR 3 —O—; R 3 is H or C 1-3 -alkyl; X, Y and Z are C—R 4 ; R 4 is H or C 1-7 -alkyl; and wherein R 1 or R 2 is selected from the group consisting of C 1-7 -alkyl, C 1-7 -alkoxy-C 1-7 -alkyl, —COOR 5 , wherein R 5 is H or C 1-7 -alkyl, —OR 6 , wherein R 6 is H, C 1-7 -alkyl, —(CH 2 ) m -cycloalkyl, —(CH 2 ) n —CN, or —(CH 2 ) n —OR 7 , and R 7 is H or C 1-7 -alkyl, wherein m is 0, 1, 2 or 3 and n is 1, 2 or 3; and —SR 8 , wherein R 8 is C 1-7 -alkyl; or the pharmaceutically acceptable salts thereof.