6-(5-methyl-2-furyl)-1-phenyl-1,5,6,7-tetrahydro-4H-indazol-4-one

methyl (1-acetyl-3-oxopyrazolidin-4-yl)acetate

1-[1-(methoxymethyl)-1H-1,2,4-triazol-5-yl]piperazine

ethyl 4-methyl-2-oxo-2,3-dihydro-1,3-thiazole-5-carboxylate

4-[1-(cyclobutylmethyl)-1H-imidazol-2-yl]piperidine dihydrochloride

3-(1-butyl-1H-imidazol-2-yl)piperidine dihydrochloride

4-[1-(1,3-thiazol-4-ylmethyl)-1H-imidazol-2-yl]piperidine hydrochloride

3-(chloromethyl)-5-(trifluoromethyl)-1,2,4-oxadiazole

ethyl 4-hydroxy-4-methyl-1-oxa-9-azaspiro[5.5]undecane-9-carboxylate

ethyl cyanoimidoformate

3,3-dimethyl-2-oxa-8-azaspiro[4.5]decane