The present invention provides compounds having formula (I): and pharmaceutically acceptable derivatives thereof; wherein R1-R4, n, p, A, B, D, E, L and AR1 are as described generally and in classes and subclasses herein, and additionally provides pharmaceutical compositions thereof; and methods for the use thereof for the treatment of disorders mediated by the CD11/CD18 family of cellular adhesion molecules (e.g., LFA-1).