| abstract |
(57) [Summary] (Corrected) [Problem] To provide a compound useful as a matrix metalloproteinase inhibitor for heart disease, multiple sclerosis, bone perforation, and the like. [Solving Means] Wherein R 1 and R 2 include hydrogen, alkyl and substituted alkyl; R 3 and R 4 include hydrogen, halogen and alkyl; X is OH or NHOH, and V is O, S, SO 2 , NR 5 or CH 2 , wherein R 5 comprises hydrogen or alkyl.] Or a pharmaceutically acceptable salt thereof. |