Patent ID: 7173023

Claim:
A compound of formula I wherein R 1 is hydrogen or methyl; R 2 is hydrogen, (C 1 â€“C 3 )-alkyl, â€”CH 2 C(O)NH 2 , â€”CH(CH 3 )C(O)NH 2 , â€”S(O) 2 CH 3 or â€”C(O)R 6 ; R 3 , R 4 and R 5 are each independently hydrogen, halogen, cyano, (C 1 â€“C 3 )-alkyl or â€”Oâ€”(C 1 â€“C 3 )-alkyl; R 6 is hydrogen, â€”CH 3 , â€”CH 2 OCH 3 , â€”C(O)NH 2 , â€”CH 2 C(O)NH 2 , â€”OCH 3 , â€”NH 2 or â€”NHCH 2 CH 3 , Xâ€“Xâ€² is â€”CH 2 â€”CH 2 â€” or â€”CHâ•CHâ€”; and Yâ€“Yâ€² is â€”CH 2 â€”CH 2 â€” or â€”CHâ•CHâ€”; wherein Xâ€“Xâ€² and Yâ€“Yâ€² are not both â€”CH 2 â€”CH 2 â€” and wherein when one of Xâ€“Xâ€² and Yâ€“Yâ€² is â€”CH 2 â€”CH 2 â€” and the other is â€”CHâ•CHâ€”, or when both of Xâ€“Xâ€² and Yâ€“Yâ€² are â€”CHâ•CHâ€”, then R 2 is â€”S(O) 2 CH 3 or â€”C(O)R 6 ; or a pharmaceutically acceptable salt thereof.