SELECTIVE INHIBITION OF AGGRECANASE IN OSTEOARTHRITIS TREATMENT

• Main Authors: HAWKINS, JOEL MICHAEL, LETAVIC, MICHAEL ANTHONY, NOE, MARK CARL
• Format: Patent
• Language: English; French
• Published: 26.07.2005
• Edition: 7
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

This invention relates to a method of treatment for osteoarthritis involving inhibitors of aggrecanase that demonstrate IC50S of less than 20 nM and demonstrate differential potency against matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinases (ADAMs or reprolysins). This invention also relates to compounds, methods of treatment and composition of Formula I: (see formula I) or a therapeutically acceptable salt thereof, wherein X is carbon or nitrogen; R1 and R2 are independently selected from the group consisting of hydrogen, hydroxy, and methyl, wherein at least one of R1 and R2 is methyl; R3 and R4 are independently selected from the group consisting of hydrogen, hydroxy, and methyl, or R3 and R4 may be taken together to form a carbonyl group; and R5 and R6 are independent substituents in the ortho, meta, or para positions and are independently selected from the group consisting of hydrogen, halogen, cyano , methyl, and ethyl; with the provisos: when X is carbon, then R7 and R8 are both hydrogen and at least one of R1, R 2, R3, and R4 is hydroxy; when X is carbon and R5 is para-halo, then at least one of R6, R3, and R4 is not hydrogen; when X is nitrogen, then R8 is not present and R7 is hydrogen or a group of the formula: wherein, Y is -CH2-NH2 or -NH-CH3; and when X is nitrogen and R7 is H, then R3 and R4 are taken together to form a carbonyl group.