摘要 |
<p>Compounds of the formula I: or pharmaceutically acceptable salts thereof wherein m, n, X, Ar, R<sup>1</sup>, R<sup>2</sup>, R<sup>3</sup>, R<sup>4 </sup>and R<sup>5</sup> are as defined herein. Also provided are methods for preparing, compositions comprising, and methods for using compounds of formula I.</p> |