2,3,8,9-tetrahydroxy-5-(2-hydroxy-5-nitrobenzyl)phenanthridin-6(5H)-one

4-N-(3-aminophenyl)-[1]benzothiolo[3,2-d]pyrimidine-4,8-diamine

2,3,8,9-tetrahydroxy-5-(3-nitrobenzyl)phenanthridin-6(5H)-one

2-((2,3,8,9-tetrahydroxy-6-oxophenanthridin-5(6H)-yl)methyl)benzonitrile

3-(4-hydroxy-3,5-diisopropylbenzylidene)indolin-2-one

2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one

2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-5-methoxy-4H-chromen-4-one

3-(3,4-dihydroxyphenyl)-2,7-dihydroxy-4H-chromen-4-one

miquelianin

2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one

(N'1E,N'2E)-N'1,N'2-bis(2,3-dihydroxybenzylidene)oxalohydrazide

2-Hydroxy-5-(2-hydroxy-benzylamino)-benzoic acid

1,1-diallyl-3-(5-hydroxy-4,6-dimethyl-2-oxoindolin-3-ylidene)thiourea

2-(3,4-dihydroxyphenyl)-5-hydroxy-3,7-dimethoxy-4H-chromen-4-one

N'-(3,4-dihydroxybenzylidene)-2-(3-nitrophenyl)-2-oxoacetohydrazide

4-N-(4-aminophenyl)-[1]benzothiolo[3,2-d]pyrimidine-4,8-diamine

5,7-dihydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one

3-(3,4-dihydroxybenzylidene)-5-nitroindolin-2-one

(N'1E,N'2E)-N'1,N'2-bis(3,4-dihydroxybenzylidene)oxalohydrazide

3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one

2-Hydroxy-5-(2-hydroxy-benzylamino)-benzoic acid methyl ester

N'-(3-aminophenyl)-N-[2-(4-hydroxy-3-methoxyphenyl)ethyl]oxamide

5-(2,5-Dihydroxy-benzylamino)-2-hydroxy-benzoic acid

N-[(3Z)-3-[(4-hydroxy-3-methoxyphenyl)methylidene]-2-oxo-1H-indol-5-yl]acetamide

2,3,8,9-tetrahydroxy-5-[(4-nitrophenyl)methyl]-5,6-dihydrophenanthridin-6-one

2,3,8,9-tetrahydroxy-5-(2-(phenylsulfonyl)benzyl)phenanthridin-6(5H)-one

N-[2-(3,4-dihydroxyphenyl)ethyl]-N'-(3-nitrophenyl)oxamide