1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)benzoyl]-4-methylpyrrolidine-3-carboxylic acid

2-[[7-(4-bromophenyl)-8-oxo-[1,2,4]triazolo[4,3-a]pyrazin-3-yl]sulfanyl]-N-(2,5-difluorophenyl)acetamide

N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-((7-(3,4-dimethylphenyl)-8-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)thio)acetamide

3-[(2-chlorobenzyl)thio]-7-(3-methoxyphenyl)[1,2,4]triazolo[4,3-a]pyrazin-8(7H)-one

7-(3,4-difluorophenyl)-3-{[2-(2,4-dimethylphenyl)-2-oxoethyl]sulfanyl}-7H,8H-[1,2,4]triazolo[4,3-a]pyrazin-8-one

N-(4-chlorobenzyl)-2-((8-oxo-7-phenyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)thio)acetamide

N-(2H-1,3-benzodioxol-5-yl)-2-({8-oxo-7-phenyl-7H,8H-[1,2,4]triazolo[4,3-a]pyrazin-3-yl}sulfanyl)acetamide

N-(2-fluorophenyl)-2-{[7-(3-methoxyphenyl)-8-oxo-7H,8H-[1,2,4]triazolo[4,3-a]pyrazin-3-yl]sulfanyl}acetamide

7-(4-ethoxyphenyl)-3-((2-oxo-2-phenylethyl)thio)-[1,2,4]triazolo[4,3-a]pyrazin-8(7H)-one

7-(3,4-difluorophenyl)-3-{[2-(2,5-dimethylphenyl)-2-oxoethyl]sulfanyl}-7H,8H-[1,2,4]triazolo[4,3-a]pyrazin-8-one

3H-pyrrolizine-2-carboxylic acid