6,7-dihydroxy-3-phenylchromen-4-one

5-methyl-2,4-diphenyl-1H-pyrazol-3-one

(5-benzyl-2H-triazol-4-yl)-trimethylsilane

(5-amino-1-phenylbenzimidazol-4-yl)-phenylmethanone

(5-amino-2-methyl-1-phenylbenzimidazol-4-yl)-phenylmethanone