| abstract |
Since it is thought that if the activity of MMP-13 can be inhibited, this will largely contribute to improvement or prevention of progession of pathological states, particularly, osteoarthritis (OA), resulting from or associated with the MMP-13 activity, the development of MMP-13 inhibitors is anticipated. There are provided a compound represented by the general formula (I): n n n n n n n n n n wherein R 1 is optionally substituted aryl etc.; Z is C1-C5 alkylene which may be substituted and may be interrupted with a substituent selected from Substituent group a etc.; A is the formula: n n n n n n n n n n (R 6 and R 7 are each independently halogen, lower alkyl etc.; m and n are each independently 0, 1, or 2); R 2 is a hydrogen atom, optionally substituted lower alkyl etc.; R 3 is a hydrogen atom, optionally substituted lower alkyl etc.; R 4 is a hydrogen atom; or R 3 and R 4 may be taken together with an adjacent carbon atom to from a ring; R 5 is hydroxy, lower alkyloxy etc.), or an optically active isomer, a pharmaceutically acceptable salt or a solvate thereof, and a pharmaceutical composition containing it as an active ingredient, which has the MMP-13 inhibiting activity. |