The present invention relates to a compound represented by the following formula (I): (wherein, W represents WA-A1-WB- (in which, WA is substituted or unsubstituted aryl, etc., A1 is —NR1—, single bond, —C(O)—, etc., and WB is substituted or unsubstituted arylene, etc.), R is single bond, —NH—, —OCH2—, alkenylene, etc., X is —C(O)—, —CH2—, etc., and M is, for example, the following formula: (in which, R11, R12 and R13 each independently represents hydrogen, hydroxyl, amino, halogen, etc., R14 is hydrogen or lower alkyl, Y represents —CH2—O—, etc., Z is substituted or unsubstituted arylene, etc., A2 is single bond, etc, and R10 is hydroxyl or lower alkoxy)), or salt thereof; and a medicament containing the same. This compound or salt thereof selectively inhibits binding of cell adhesion molecules to VLA-4 and exhibits high bioavailability so that it is useful as a preventive and/or remedy for inflammatory diseases, autoimmune diseases, metastasis, bronchial asthma, rhinostenosis, diabetes, and the like.