2-Oxo-4- m -tolyl-2,3-dihydro-thiazole-5-carboxylic acid ethyl ester

2-Cyclopropylamino-4-methyl-thiazole-5-carboxylic acid ethyl ester

7-Cyclopropyl-pyrazolo[1,5- a ]pyrimidine-2-carboxylic acid methyl ester

7-Chloromethyl-5-oxo-4,5-dihydro-pyrazolo[1,5- a ]pyrimidine-3-carboxylic acid ethyl ester

(2-Methyl-4-nitro-imidazol-1-yl)-acetic acid ethyl ester

(3-Trifluoromethyl-pyrazol-1-yl)-acetic acid ethyl ester

1-(1-Methyl-1 H -pyrazole-4-sulfonyl)-piperidine-3-carboxylic acid ethyl ester

5-Methyl-7-trifluoromethyl-pyrazolo[1,5- a ]pyrimidine-3-carboxylic acid ethyl ester

2-(4-Bromo-3,5-dimethyl-pyrazol-1-yl)-propionic acid methyl ester

5-(4-Fluoro-phenyl)-1H-pyrazole-3-carboxylic acid methyl ester

5-(3-Methoxy-phenyl)-1 H -pyrazole-3-carboxylic acid methyl ester