abstract |
The present invention features a compound of formula I: n n n n n n n n n n or a pharmaceutically acceptable salt thereof, where R 1 , R 2 , R 3 , W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof. |