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    —— (6E)-6-[[3-(1,3-benzoxazol-2-yl)-2-methylanilino]methylidene]-4-bromocyclohexa-2,4-dien-1-one —— C21H15BrN2O2
    (6E)-6-[[3-(1,3-benzoxazol-2-yl)-2-methylanilino]methylidene]-4-bromocyclohexa-2,4-dien-1-one
    —— (6E)-6-{[1-(3,4-dimethylphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-2-(ethylsulfanyl)-5-imino-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C22H23N5OS2
    (6E)-6-{[1-(3,4-dimethylphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-2-(ethylsulfanyl)-5-imino-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-6-{3-chloro-5-methoxy-4-[2-(3-methylphenoxy)ethoxy]benzylidene}-2-ethyl-5-imino-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C24H23ClN4O4S
    (6Z)-6-{3-chloro-5-methoxy-4-[2-(3-methylphenoxy)ethoxy]benzylidene}-2-ethyl-5-imino-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6E)-6-[4-(3,5-dimethylphenoxy)-1H-quinazolin-2-ylidene]-2-methoxycyclohexa-2,4-dien-1-one —— C23H20N2O3
    (6E)-6-[4-(3,5-dimethylphenoxy)-1H-quinazolin-2-ylidene]-2-methoxycyclohexa-2,4-dien-1-one
    —— (6Z)-5-imino-6-(4-{3-[5-methyl-2-(propan-2-yl)phenoxy]propoxy}benzylidene)-2-(thiophen-2-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C29H28N4O3S2
    (6Z)-5-imino-6-(4-{3-[5-methyl-2-(propan-2-yl)phenoxy]propoxy}benzylidene)-2-(thiophen-2-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-6-{[1-(2,3-dimethylphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-methyl-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C21H21N5OS
    (6Z)-6-{[1-(2,3-dimethylphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-methyl-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6E)-5-imino-6-{[1-(3-methylbenzyl)-1H-indol-3-yl]methylidene}-2-(pentan-3-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C27H27N5OS
    (6E)-5-imino-6-{[1-(3-methylbenzyl)-1H-indol-3-yl]methylidene}-2-(pentan-3-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6E)-2,4-dichloro-6-[[4-chloro-3-(5-methyl-1,3-benzoxazol-2-yl)anilino]methylidene]cyclohexa-2,4-dien-1-one —— C21H13Cl3N2O2
    (6E)-2,4-dichloro-6-[[4-chloro-3-(5-methyl-1,3-benzoxazol-2-yl)anilino]methylidene]cyclohexa-2,4-dien-1-one
    —— (6E)-6-[(4H-1,3-benzodioxin-6-ylamino)methylidene]-2,4-dichlorocyclohexa-2,4-dien-1-one —— C15H11Cl2NO3
    (6E)-6-[(4H-1,3-benzodioxin-6-ylamino)methylidene]-2,4-dichlorocyclohexa-2,4-dien-1-one
    —— (6Z)-6-[(4-chloroanilino)methylidene]-4-(diethylamino)cyclohexa-2,4-dien-1-one —— C17H19ClN2O
    (6Z)-6-[(4-chloroanilino)methylidene]-4-(diethylamino)cyclohexa-2,4-dien-1-one
    —— (6E)-2,4-dibromo-6-[[(1-methylbenzimidazol-2-yl)amino]methylidene]cyclohexa-2,4-dien-1-one —— C15H11Br2N3O
    (6E)-2,4-dibromo-6-[[(1-methylbenzimidazol-2-yl)amino]methylidene]cyclohexa-2,4-dien-1-one
    —— (6Z)-2-(2-cyclohexylethyl)-5-imino-6-(1H-indol-3-ylmethylidene)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C22H23N5OS
    (6Z)-2-(2-cyclohexylethyl)-5-imino-6-(1H-indol-3-ylmethylidene)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-6-(4-{2-[4-(butan-2-yl)phenoxy]ethoxy}benzylidene)-5-imino-2-(thiophen-2-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C28H26N4O3S2
    (6Z)-6-(4-{2-[4-(butan-2-yl)phenoxy]ethoxy}benzylidene)-5-imino-2-(thiophen-2-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— 6-[3-[(2,5-dimethylphenoxy)methyl]-4-methoxyphenyl]-1-phenyl-5,6-dihydro-2H-pyrazolo[3,4-d]pyrimidin-4-one —— C27H26N4O3
    6-[3-[(2,5-dimethylphenoxy)methyl]-4-methoxyphenyl]-1-phenyl-5,6-dihydro-2H-pyrazolo[3,4-d]pyrimidin-4-one
    —— (6Z)-2-benzylsulfanyl-6-[[5-chloro-2-[(2-methylphenyl)methoxy]phenyl]methylidene]-5-imino-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C27H21ClN4O2S2
    (6Z)-2-benzylsulfanyl-6-[[5-chloro-2-[(2-methylphenyl)methoxy]phenyl]methylidene]-5-imino-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-6-{[1-(3,5-dichlorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-methyl-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C19H15Cl2N5OS
    (6Z)-6-{[1-(3,5-dichlorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-methyl-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-5-imino-6-[(2-methyl-1-{2-[2-(prop-2-en-1-yl)phenoxy]ethyl}-1H-indol-3-yl)methylidene]-2-(phenoxymethyl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C33H29N5O3S
    (6Z)-5-imino-6-[(2-methyl-1-{2-[2-(prop-2-en-1-yl)phenoxy]ethyl}-1H-indol-3-yl)methylidene]-2-(phenoxymethyl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— 6-[(3,4-dimethoxyphenyl)methyl]-3-[(2Z)-2-[1-(4-nitrophenyl)ethylidene]hydrazinyl]-4H-1,2,4-triazin-5-one —— C20H20N6O5
    6-[(3,4-dimethoxyphenyl)methyl]-3-[(2Z)-2-[1-(4-nitrophenyl)ethylidene]hydrazinyl]-4H-1,2,4-triazin-5-one
    —— (6E)-6-[[5-(5-chloro-1,3-benzoxazol-2-yl)-2-methylanilino]methylidene]-2-methoxy-4-nitrocyclohexa-2,4-dien-1-one —— C22H16ClN3O5
    (6E)-6-[[5-(5-chloro-1,3-benzoxazol-2-yl)-2-methylanilino]methylidene]-2-methoxy-4-nitrocyclohexa-2,4-dien-1-one
    —— 6-Chloro-7-hydroxy-4-methyl-8-(pyrrolidin-1-ium-1-ylmethyl)chromen-2-one —— C15H17ClNO3+
    6-Chloro-7-hydroxy-4-methyl-8-(pyrrolidin-1-ium-1-ylmethyl)chromen-2-one
    —— (6E)-5-imino-6-({1-[2-(3-methylphenoxy)ethyl]-1H-indol-3-yl}methylidene)-2-propyl-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C26H25N5O2S
    (6E)-5-imino-6-({1-[2-(3-methylphenoxy)ethyl]-1H-indol-3-yl}methylidene)-2-propyl-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— 6β-hydroxyzuelanin-2α-acetate —— C26H36O8
    6β-hydroxyzuelanin-2α-acetate
    —— (6E)-4-chloro-6-[[3-(5-methyl-1,3-benzoxazol-2-yl)anilino]methylidene]-2-nitrocyclohexa-2,4-dien-1-one —— C21H14ClN3O4
    (6E)-4-chloro-6-[[3-(5-methyl-1,3-benzoxazol-2-yl)anilino]methylidene]-2-nitrocyclohexa-2,4-dien-1-one
    —— 6-chloro-N-[2-[(5Z)-2,4-dioxo-5-[(3,4,5-trimethoxyphenyl)methylidene]-1,3-thiazolidin-3-yl]ethyl]pyridine-3-carboxamide —— C21H20ClN3O6S
    6-chloro-N-[2-[(5Z)-2,4-dioxo-5-[(3,4,5-trimethoxyphenyl)methylidene]-1,3-thiazolidin-3-yl]ethyl]pyridine-3-carboxamide
    —— (6Z)-5-imino-6-{4-[2-(2-methylphenoxy)ethoxy]benzylidene}-2-[2-oxo-2-(piperidin-1-yl)ethyl]-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C28H29N5O4S
    (6Z)-5-imino-6-{4-[2-(2-methylphenoxy)ethoxy]benzylidene}-2-[2-oxo-2-(piperidin-1-yl)ethyl]-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— 6-methyl-4-[(E)-2-phenylethenyl]-2-prop-2-enylsulfanylpyridine-3-carbonitrile —— C18H16N2S
    6-methyl-4-[(E)-2-phenylethenyl]-2-prop-2-enylsulfanylpyridine-3-carbonitrile
    —— (6Z)-5-imino-6-[[1-[2-(2-prop-2-enylphenoxy)ethyl]indol-3-yl]methylidene]-2-pyridin-3-yl-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C30H24N6O2S
    (6Z)-5-imino-6-[[1-[2-(2-prop-2-enylphenoxy)ethyl]indol-3-yl]methylidene]-2-pyridin-3-yl-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6E)-4-chloro-6-[(3,4-dichloroanilino)methylidene]-3,5-dimethylcyclohexa-2,4-dien-1-one —— C15H12Cl3NO
    (6E)-4-chloro-6-[(3,4-dichloroanilino)methylidene]-3,5-dimethylcyclohexa-2,4-dien-1-one
    —— (6E)-6-{[1-(2,6-dimethylphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-[(3-methylphenoxy)methyl]-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C28H27N5O2S
    (6E)-6-{[1-(2,6-dimethylphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-[(3-methylphenoxy)methyl]-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6-Ethyl-7-hydroxy-4-methyl-2-oxochromen-8-yl)methyl-bis(2-methylpropyl)azanium —— C21H32NO3+
    (6-Ethyl-7-hydroxy-4-methyl-2-oxochromen-8-yl)methyl-bis(2-methylpropyl)azanium
    —— 6-bromo-3-[(2E)-3-(3-nitrophenyl)prop-2-enoyl]-2H-chromen-2-one —— C18H10BrNO5
    6-bromo-3-[(2E)-3-(3-nitrophenyl)prop-2-enoyl]-2H-chromen-2-one
    —— (6E)-4-benzyl-6-[[4-(5-ethyl-1,3-benzoxazol-2-yl)anilino]methylidene]-2-nitrocyclohexa-2,4-dien-1-one —— C29H23N3O4
    (6E)-4-benzyl-6-[[4-(5-ethyl-1,3-benzoxazol-2-yl)anilino]methylidene]-2-nitrocyclohexa-2,4-dien-1-one
    —— (6Z)-6-[[1-(3,4-dimethylphenyl)-2,5-dimethylpyrrol-3-yl]methylidene]-2-(4-fluorophenyl)-5-imino-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C26H22FN5OS
    (6Z)-6-[[1-(3,4-dimethylphenyl)-2,5-dimethylpyrrol-3-yl]methylidene]-2-(4-fluorophenyl)-5-imino-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— 6-[5-[(Z)-(4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene)methyl]furan-2-yl]-4a,9a-dihydroanthracene-9,10-dione —— C22H13NO4S2
    6-[5-[(Z)-(4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene)methyl]furan-2-yl]-4a,9a-dihydroanthracene-9,10-dione
    —— 6-[(5Z)-5-{[3-(3-ethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]hexanoic acid —— C27H27N3O4S2
    6-[(5Z)-5-{[3-(3-ethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]hexanoic acid
    —— (6Z)-6-(4-ethoxybenzylidene)-3-(3,4,5-trimethoxyphenyl)[1,3]thiazolo[2,3-c][1,2,4]triazol-5(6H)-one —— C22H21N3O5S
    (6Z)-6-(4-ethoxybenzylidene)-3-(3,4,5-trimethoxyphenyl)[1,3]thiazolo[2,3-c][1,2,4]triazol-5(6H)-one
    —— (6Z)-6-{[1-(2,3-dichlorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-(propan-2-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C21H19Cl2N5OS
    (6Z)-6-{[1-(2,3-dichlorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl]methylidene}-5-imino-2-(propan-2-yl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-6-[[1-(3-chloro-4-methoxyphenyl)-2,5-dimethylpyrrol-3-yl]methylidene]-5-imino-2-(2-oxo-2-pyrrolidin-1-ylethyl)-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C25H25ClN6O3S
    (6Z)-6-[[1-(3-chloro-4-methoxyphenyl)-2,5-dimethylpyrrol-3-yl]methylidene]-5-imino-2-(2-oxo-2-pyrrolidin-1-ylethyl)-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6E)-4-chloro-6-[(thiophen-2-ylmethylamino)methylidene]cyclohexa-2,4-dien-1-one —— C12H10ClNOS
    (6E)-4-chloro-6-[(thiophen-2-ylmethylamino)methylidene]cyclohexa-2,4-dien-1-one
    —— (6Z)-5-imino-6-{3-[2-(3-methoxyphenoxy)ethoxy]benzylidene}-2-(4-methylphenyl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C28H24N4O4S
    (6Z)-5-imino-6-{3-[2-(3-methoxyphenoxy)ethoxy]benzylidene}-2-(4-methylphenyl)-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6Z)-3-[(2-chloro-6-fluorophenyl)methoxy]-6-[4-(3,4-dimethoxyphenyl)-5-methyl-1,2-dihydropyrazol-3-ylidene]cyclohexa-2,4-dien-1-one —— C25H22ClFN2O4
    (6Z)-3-[(2-chloro-6-fluorophenyl)methoxy]-6-[4-(3,4-dimethoxyphenyl)-5-methyl-1,2-dihydropyrazol-3-ylidene]cyclohexa-2,4-dien-1-one
    —— (6Z)-2-bromo-4-methyl-6-[(naphthalen-2-ylamino)methylidene]cyclohexa-2,4-dien-1-one —— C18H14BrNO
    (6Z)-2-bromo-4-methyl-6-[(naphthalen-2-ylamino)methylidene]cyclohexa-2,4-dien-1-one
    —— (6E)-6-[4-(4-chloro-3-ethylphenoxy)-1H-quinazolin-2-ylidene]-2-methoxycyclohexa-2,4-dien-1-one —— C23H19ClN2O3
    (6E)-6-[4-(4-chloro-3-ethylphenoxy)-1H-quinazolin-2-ylidene]-2-methoxycyclohexa-2,4-dien-1-one
    —— (6Z)-3-methoxy-5-methyl-6-(5-methyl-4-phenoxy-1,2-dihydropyrazol-3-ylidene)cyclohexa-2,4-dien-1-one —— C18H18N2O3
    (6Z)-3-methoxy-5-methyl-6-(5-methyl-4-phenoxy-1,2-dihydropyrazol-3-ylidene)cyclohexa-2,4-dien-1-one
    —— 6-hydroxy-5-nitro-2-{(E)-2-[2-(propan-2-yloxy)naphthalen-1-yl]ethenyl}pyrimidin-4(3H)-one —— C19H17N3O5
    6-hydroxy-5-nitro-2-{(E)-2-[2-(propan-2-yloxy)naphthalen-1-yl]ethenyl}pyrimidin-4(3H)-one
    —— (6Z)-5-imino-6-{3-methoxy-4-[(4-methylbenzyl)oxy]benzylidene}-2-[2-(morpholin-4-yl)-2-oxoethyl]-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one —— C27H27N5O5S
    (6Z)-5-imino-6-{3-methoxy-4-[(4-methylbenzyl)oxy]benzylidene}-2-[2-(morpholin-4-yl)-2-oxoethyl]-5,6-dihydro-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one
    —— (6E)-6-[[[(4Z)-4-(3H-1,3-benzothiazol-2-ylidene)-3-oxocyclohexa-1,5-dien-1-yl]amino]methylidene]-4-chloro-3,5-dimethyl-2-nitrocyclohexa-2,4-dien-1-one —— C22H16ClN3O4S
    (6E)-6-[[[(4Z)-4-(3H-1,3-benzothiazol-2-ylidene)-3-oxocyclohexa-1,5-dien-1-yl]amino]methylidene]-4-chloro-3,5-dimethyl-2-nitrocyclohexa-2,4-dien-1-one
    —— (6E)-6-[[4-(4-butanoylpiperazin-1-yl)anilino]methylidene]-2,4-dichlorocyclohexa-2,4-dien-1-one —— C21H23Cl2N3O2
    (6E)-6-[[4-(4-butanoylpiperazin-1-yl)anilino]methylidene]-2,4-dichlorocyclohexa-2,4-dien-1-one
    —— (6Z)-6-{[4-(Dimethylamino)phenyl]methylidene}-3-(ethylsulfanyl)-5-imino-5H,6H,7H-[1,2,4]thiadiazolo[4,5-A]pyrimidin-7-one —— C16H17N5OS2
    (6Z)-6-{[4-(Dimethylamino)phenyl]methylidene}-3-(ethylsulfanyl)-5-imino-5H,6H,7H-[1,2,4]thiadiazolo[4,5-A]pyrimidin-7-one
    —— 6-[(5Z)-5-[(3,4-dimethoxyphenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-N-(1,3-thiazol-2-yl)hexanamide —— C21H23N3O4S3
    6-[(5Z)-5-[(3,4-dimethoxyphenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-N-(1,3-thiazol-2-yl)hexanamide