7-[(4-methoxyphenyl)methyl]-5-phenylimidazo[1,5-a]pyrazin-8-one

5-phenyl-7H-imidazo[1,5-a]pyrazin-8-one

2-phenylpyrido[3,4-b]pyrazine

tert-Butyl cis-4-oxo-4-phenylbut-2-enoate

tert-butyl 4-oxo-4-phenylbut-2-enoate