1-(2,5-dimethylphenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(2-methyl-4-nitrophenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(4-fluorophenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

1-(3,4-dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

1-(2-chloro-5-nitrophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-5-methyl-1-(3-methylphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-5-methyl-1-(4-nitrophenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

4-benzoyl-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid

3-(ethoxycarbonyl)-1-(4-ethylphenyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

4-(3-nitrobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid

4-[2-(4-methoxyphenyl)acetyl]-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid