Patent ID: 7855225

Claim:
A compound or a pharmaceutically acceptable salt thereof, which is selected from 1-[(4-bromophenyl)sulfonyl]-1H-indole-3-carboxylic acid, 4-methoxy-1-(phenylsulfonyl)-1H-indole-3-carboxylic acid, 5-methyl-1-(phenylsulfonyl)-1H-indole-3-carboxylic acid, 5-fluoro-1-(phenylsulfonyl)-1H-indole-3-carboxylic acid, 7-fluoro-1-(phenylsulfonyl)-1H-indole-3-carboxylic acid, 1-[(4-bromophenyl)sulfonyl]-7-chloro-1H-indole-3-carboxylic acid, 7-chloro-1-(phenylsulfonyl)-1 H-indole-3-carboxylic acid, and 5-chloro-1-(phenylsulfonyl)-1 H-indole-3-carboxylic acid.