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    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 吡啶并嘧啶类

    吡啶并嘧啶类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— (5Z)-3-butyl-5-[[2-[(2R,6R)-2,6-dimethylmorpholin-4-yl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C23H28N4O3S2
    (5Z)-3-butyl-5-[[2-[(2R,6R)-2,6-dimethylmorpholin-4-yl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-5-[[2-[ethyl(propyl)amino]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(3-methoxypropyl)-2-sulfanylidene-1,3-thiazolidin-4-one —— C22H28N4O3S2
    (5E)-5-[[2-[ethyl(propyl)amino]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(3-methoxypropyl)-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-3-[(2R)-butan-2-yl]-5-[[2-(2-methoxyethylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C19H22N4O3S2
    (5E)-3-[(2R)-butan-2-yl]-5-[[2-(2-methoxyethylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5Z)-3-[(2S)-butan-2-yl]-5-[(4-oxo-2-pyrrolidin-1-ylpyrido[1,2-a]pyrimidin-3-yl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H22N4O2S2
    (5Z)-3-[(2S)-butan-2-yl]-5-[(4-oxo-2-pyrrolidin-1-ylpyrido[1,2-a]pyrimidin-3-yl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— methyl (Z)-2-cyano-3-[2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-4-oxopyrido[1,2-a]pyrimidin-3-yl]prop-2-enoate —— C19H20N4O4
    methyl (Z)-2-cyano-3-[2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-4-oxopyrido[1,2-a]pyrimidin-3-yl]prop-2-enoate
    —— ethyl (5S)-2-amino-7-methyl-5-(3-nitrophenyl)-4-oxo-5,8-dihydro-3H-pyrido[2,3-d]pyrimidine-6-carboxylate —— C17H17N5O5
    ethyl (5S)-2-amino-7-methyl-5-(3-nitrophenyl)-4-oxo-5,8-dihydro-3H-pyrido[2,3-d]pyrimidine-6-carboxylate
    —— (5E)-5-[[2-(dimethylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(2-methoxyethyl)-2-sulfanylidene-1,3-thiazolidin-4-one —— C17H18N4O3S2
    (5E)-5-[[2-(dimethylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(2-methoxyethyl)-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-3-[(2R)-butan-2-yl]-5-[[7-methyl-4-oxo-2-(prop-2-enylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H22N4O2S2
    (5E)-3-[(2R)-butan-2-yl]-5-[[7-methyl-4-oxo-2-(prop-2-enylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5Z)-3-[(2R)-butan-2-yl]-5-[[7-methyl-4-oxo-2-(prop-2-enylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H22N4O2S2
    (5Z)-3-[(2R)-butan-2-yl]-5-[[7-methyl-4-oxo-2-(prop-2-enylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-3-[(2R)-butan-2-yl]-5-[[9-methyl-4-oxo-2-(propylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H24N4O2S2
    (5E)-3-[(2R)-butan-2-yl]-5-[[9-methyl-4-oxo-2-(propylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 6-[(E)-2-(2,5-dimethoxyphenyl)ethenyl]-5-methylpyrido[2,3-d]pyrimidine-2,4-diamine —— C18H19N5O2
    6-[(E)-2-(2,5-dimethoxyphenyl)ethenyl]-5-methylpyrido[2,3-d]pyrimidine-2,4-diamine
    —— 3-{(Z)-[3-(1,1-dioxidotetrahydrothiophen-3-yl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-7-methyl-2-(octylamino)-4H-pyrido[1,2-a]pyrimidin-4-one —— C25H32N4O4S3
    3-{(Z)-[3-(1,1-dioxidotetrahydrothiophen-3-yl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-7-methyl-2-(octylamino)-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 3-{(Z)-[3-(4-methoxybenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-7-methyl-2-(octylamino)-4H-pyrido[1,2-a]pyrimidin-4-one —— C29H34N4O3S2
    3-{(Z)-[3-(4-methoxybenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-7-methyl-2-(octylamino)-4H-pyrido[1,2-a]pyrimidin-4-one
    —— (5Z)-3-(1,1-dioxothiolan-3-yl)-5-[[2-(octylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C24H30N4O4S3
    (5Z)-3-(1,1-dioxothiolan-3-yl)-5-[[2-(octylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 3-{(Z)-[3-(2-chlorobenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-9-methyl-2-(octylamino)-4H-pyrido[1,2-a]pyrimidin-4-one —— C28H31ClN4O2S2
    3-{(Z)-[3-(2-chlorobenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-9-methyl-2-(octylamino)-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 11-[(5Z)-5-({9-methyl-2-[(2-methylpropyl)amino]-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}methylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]undecanoic acid —— C28H38N4O4S2
    11-[(5Z)-5-({9-methyl-2-[(2-methylpropyl)amino]-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}methylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]undecanoic acid
    —— 2-[(2-hydroxy-2-phenylethyl)amino]-9-methyl-3-{(Z)-[4-oxo-3-(2-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one —— C29H26N4O3S2
    2-[(2-hydroxy-2-phenylethyl)amino]-9-methyl-3-{(Z)-[4-oxo-3-(2-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one
    —— (Z)-3-benzyl-5-((2-((3-ethoxypropyl)amino)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-2-thioxothiazolidin-4-one —— C25H26N4O3S2
    (Z)-3-benzyl-5-((2-((3-ethoxypropyl)amino)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-2-thioxothiazolidin-4-one
    —— (7R)-6-(4-bromophenyl)sulfanyl-5-methyl-7,8-dihydropyrido[2,3-d]pyrimidine-2,4,7-triamine —— C14H15BrN6S
    (7R)-6-(4-bromophenyl)sulfanyl-5-methyl-7,8-dihydropyrido[2,3-d]pyrimidine-2,4,7-triamine
    —— 3-[(Z)-(3-sec-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-7-methyl-2-(4-morpholinyl)-4H-pyrido[1,2-a]pyrimidin-4-one 618071-98-0 C21H24N4O3S2
    3-[(Z)-(3-sec-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-7-methyl-2-(4-morpholinyl)-4H-pyrido[1,2-a]pyrimidin-4-one
    —— (9aS)-4-(N-ethylanilino)-1,6,7,8,9,9a-hexahydropyrido[1,2-a]pyrimidin-2-one —— C16H21N3O
    (9aS)-4-(N-ethylanilino)-1,6,7,8,9,9a-hexahydropyrido[1,2-a]pyrimidin-2-one
    —— 3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-(3-methylpiperidin-1-yl)-4H-pyrido[1,2-a]pyrimidin-4-one —— C21H24N4O3S2
    3-{(Z)-[3-(2-methoxyethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-(3-methylpiperidin-1-yl)-4H-pyrido[1,2-a]pyrimidin-4-one
    —— (5Z)-5-{[2-(ethylamino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl]methylidene}-3-propyl-1,3-thiazolidine-2,4-dione —— C17H18N4O3S
    (5Z)-5-{[2-(ethylamino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl]methylidene}-3-propyl-1,3-thiazolidine-2,4-dione
    —— 2-{[3-(1H-Imidazol-1-YL)propyl]amino}-3-{(E)-[3-(4-methoxybenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-A]pyrimidin-4-one —— C26H24N6O3S2
    2-{[3-(1H-Imidazol-1-YL)propyl]amino}-3-{(E)-[3-(4-methoxybenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-A]pyrimidin-4-one
    —— 2-[(4-methoxybenzyl)amino]-3-[(Z)-(4-oxo-3-propyl-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one —— C23H22N4O3S2
    2-[(4-methoxybenzyl)amino]-3-[(Z)-(4-oxo-3-propyl-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 3-{(Z)-[3-(4-methylbenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-{[3-(morpholin-4-yl)propyl]amino}-4H-pyrido[1,2-a]pyrimidin-4-one —— C27H29N5O3S2
    3-{(Z)-[3-(4-methylbenzyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-{[3-(morpholin-4-yl)propyl]amino}-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 2-[cyclohexyl(methyl)amino]-3-{(Z)-[4-oxo-3-(1-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one —— C27H28N4O2S2
    2-[cyclohexyl(methyl)amino]-3-{(Z)-[4-oxo-3-(1-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 3-{(Z)-[3-(butan-2-yl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-(pyrrolidin-1-yl)-4H-pyrido[1,2-a]pyrimidin-4-one —— C20H22N4O2S2
    3-{(Z)-[3-(butan-2-yl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-(pyrrolidin-1-yl)-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 4-oxo-N-[(2R)-4-phenylbutan-2-yl]pyrido[1,2-a]pyrimidine-3-carboxamide —— C19H19N3O2
    4-oxo-N-[(2R)-4-phenylbutan-2-yl]pyrido[1,2-a]pyrimidine-3-carboxamide
    —— 4-oxo-N-[(1R)-1-phenylethyl]pyrido[1,2-a]pyrimidine-3-carboxamide —— C17H15N3O2
    4-oxo-N-[(1R)-1-phenylethyl]pyrido[1,2-a]pyrimidine-3-carboxamide
    —— N-[(1R,2R)-2-methylcyclohexyl]-9-oxo-17-thia-2,8-diazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),2,4,6,11(16)-pentaene-4-carboxamide —— C22H25N3O2S
    N-[(1R,2R)-2-methylcyclohexyl]-9-oxo-17-thia-2,8-diazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),2,4,6,11(16)-pentaene-4-carboxamide
    —— N-[(1R,2R,3R)-2,3-dimethylcyclohexyl]-9-oxo-17-thia-2,8-diazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),2,4,6,11(16)-pentaene-4-carboxamide —— C23H27N3O2S
    N-[(1R,2R,3R)-2,3-dimethylcyclohexyl]-9-oxo-17-thia-2,8-diazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),2,4,6,11(16)-pentaene-4-carboxamide
    —— (14E)-14-[(4-methoxyphenyl)methylidene]-3-thia-1,12-diazapentacyclo[11.8.0.02,10.04,9.015,20]henicosa-2(10),4(9),12,15,17,19-hexaen-11-one —— C26H22N2O2S
    (14E)-14-[(4-methoxyphenyl)methylidene]-3-thia-1,12-diazapentacyclo[11.8.0.02,10.04,9.015,20]henicosa-2(10),4(9),12,15,17,19-hexaen-11-one
    —— 3-{(Z)-[3-(butan-2-yl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-{[3-(1H-imidazol-1-yl)propyl]amino}-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one —— C23H26N6O2S2
    3-{(Z)-[3-(butan-2-yl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-2-{[3-(1H-imidazol-1-yl)propyl]amino}-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 3-{(Z)-[3-(2-Furylmethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-9-methyl-2-{[3-(4-morpholinyl)propyl]amino}-4H-pyrido[1,2-A]pyrimidin-4-one —— C25H27N5O4S2
    3-{(Z)-[3-(2-Furylmethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-9-methyl-2-{[3-(4-morpholinyl)propyl]amino}-4H-pyrido[1,2-A]pyrimidin-4-one
    —— 3-[(Z)-(3-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-hydroxy-2-phenylethyl)amino]-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one —— C25H26N4O3S2
    3-[(Z)-(3-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-hydroxy-2-phenylethyl)amino]-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 3-[(Z)-(3-sec-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-methoxyethyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one —— C19H22N4O3S2
    3-[(Z)-(3-sec-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-methoxyethyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 3-(sec-butyl)-5-((Z)-1-{2-[3,4-dihydro-2(1H)-isoquinolinyl]-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}methylidene)-2-thioxo-1,3-thiazolan-4-one —— C26H26N4O2S2
    3-(sec-butyl)-5-((Z)-1-{2-[3,4-dihydro-2(1H)-isoquinolinyl]-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}methylidene)-2-thioxo-1,3-thiazolan-4-one
    —— 6-[(2R)-2-hydroxypentyl]-2-[(4-methoxyphenyl)methyl]-1,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-one —— C20H27N3O3
    6-[(2R)-2-hydroxypentyl]-2-[(4-methoxyphenyl)methyl]-1,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-one
    —— 3-[(Z)-(3-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[cyclohexyl(methyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one —— C23H28N4O2S2
    3-[(Z)-(3-butyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[cyclohexyl(methyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 2-(dimethylamino)-3-{(Z)-[4-oxo-3-(2-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one —— C22H20N4O2S2
    2-(dimethylamino)-3-{(Z)-[4-oxo-3-(2-phenylethyl)-2-thioxo-1,3-thiazolidin-5-ylidene]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one
    —— (5E)-5-{[2-(Cyclohexylamino)-4-oxo-4H-pyrido[1,2-A]pyrimidin-3-YL]methylidene}-3-octyl-2-sulfanylidene-1,3-thiazolidin-4-one —— C26H34N4O2S2
    (5E)-5-{[2-(Cyclohexylamino)-4-oxo-4H-pyrido[1,2-A]pyrimidin-3-YL]methylidene}-3-octyl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— N-[(1R,2S,3S)-2,3-dimethylcyclohexyl]-10-methyl-2-oxo-6-thia-1,8-diazatricyclo[7.4.0.03,7]trideca-3(7),4,8,10,12-pentaene-5-carboxamide —— C20H23N3O2S
    N-[(1R,2S,3S)-2,3-dimethylcyclohexyl]-10-methyl-2-oxo-6-thia-1,8-diazatricyclo[7.4.0.03,7]trideca-3(7),4,8,10,12-pentaene-5-carboxamide
    —— (2E)-2-cyano-3-[9-methyl-2-(morpholin-4-yl)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl]-N-(tetrahydrofuran-2-ylmethyl)prop-2-enamide —— C22H25N5O4
    (2E)-2-cyano-3-[9-methyl-2-(morpholin-4-yl)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl]-N-(tetrahydrofuran-2-ylmethyl)prop-2-enamide
    —— 2-(2,6-dimethylmorpholin-4-yl)-9-methyl-3-[(Z)-(4-oxo-3-propyl-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one —— C22H26N4O3S2
    2-(2,6-dimethylmorpholin-4-yl)-9-methyl-3-[(Z)-(4-oxo-3-propyl-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one
    —— 2-(3,5-dimethylpiperidin-1-yl)-3-[(Z)-(3-ethyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-7-methyl-4H-pyrido[1,2-a]pyrimidin-4-one —— C22H26N4O2S2
    2-(3,5-dimethylpiperidin-1-yl)-3-[(Z)-(3-ethyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-7-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
    —— ethyl 1-(3-{(1E)-2-cyano-3-oxo-3-[(2-phenylethyl)amino]prop-1-en-1-yl}-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)piperidine-3-carboxylate —— C29H31N5O4
    ethyl 1-(3-{(1E)-2-cyano-3-oxo-3-[(2-phenylethyl)amino]prop-1-en-1-yl}-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)piperidine-3-carboxylate
    —— 3-[(Z)-(3-Ethyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-9-methyl-2-[(tetrahydro-2-furanylmethyl)amino]-4H-pyrido[1,2-A]pyrimidin-4-one —— C20H22N4O3S2
    3-[(Z)-(3-Ethyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-9-methyl-2-[(tetrahydro-2-furanylmethyl)amino]-4H-pyrido[1,2-A]pyrimidin-4-one
    —— methyl (4R)-4-(2-chloro-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl)-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate —— C16H15ClN4O4
    methyl (4R)-4-(2-chloro-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl)-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate
    —— methyl (4S)-4-(2-chloro-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl)-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate —— C16H15ClN4O4
    methyl (4S)-4-(2-chloro-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl)-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate