| 摘要 |
The invention is directed to compounds of formula I: wherein R1, R2, R3, R4, R5, R6, R7a, R7b, W, G1, G2, a, b, c, d and m are as defined in the specification, or a pharmaceutically acceptable salt or solvate or stereoisomer thereof. The invention is also directed to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds. |
