| abstract |
The invention provides a compound of formula (I): Wherein R 1 , R 2 , R 6 , Y 1 , Y 2 , Y 3 , A 1 , A 2 , A 3 and A 4 have any values defined in this description, and their pharmaceutically acceptable salts, which can be Useful as an agent in the treatment of diseases and diseases including inflammatory diseases, cancer and AIDS. Also provided are pharmaceutical compositions comprising one or more compounds of formula (I). |