2-(4-Fluoro-phenyl)-5-(1,3,5-trimethyl-1 H -pyrazol-4-yl)-pyrazolo[1,5- a ]pyrimidine-7-carboxylic acid

6-Cyclopropyl-1,3-dimethyl-1 H -pyrazolo[3,4- b ]pyridine-4-carboxylic acid

3,6-Dimethyl-1-propyl-1 H -pyrazolo[3,4- b ]pyridine-4-carboxylic acid

3-(3-Bromo-phenyl)-4,5-dihydro-isoxazole-5-carboxylic acid

1-(1-Ethyl-5-methyl-1 H -pyrazole-4-sulfonyl)-piperidine-4-carboxylic acid

3-Methyl-1-phenyl-1 H -thieno[2,3- c ]pyrazole-5-carboxylic acid

5-(3-Nitro-phenoxymethyl)-furan-2-carboxylic acid

(4-Amino-5-trifluoromethyl-4 H -[1,2,4]triazol-3-ylsulfanyl)-acetic acid

4-Methoxy-3-piperidin-1-ylmethyl-benzoic acid

1-(3-Nitro-benzenesulfonyl)-piperidine-3-carboxylic acid

1-(1,5-Dimethyl-1 H -pyrazole-4-sulfonyl)-piperidine-3-carboxylic acid