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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
    —— 2-benzyl-N-(3-methylphenyl)-4-oxo-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidine-6-carboxamide —— C22H22N4O2
    2-benzyl-N-(3-methylphenyl)-4-oxo-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidine-6-carboxamide
    —— 7-[(2-chlorophenyl)methyl]-6-imino-11-methyl-N-[(4-methylphenyl)methyl]-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide —— C28H24ClN5O2
    7-[(2-chlorophenyl)methyl]-6-imino-11-methyl-N-[(4-methylphenyl)methyl]-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide
    —— 6,13-Dimethyl-4,11-dipropyl-2,4,6,11,13-pentazatricyclo[8.4.0.03,8]tetradeca-1(10),2,8-triene-5,7,12,14-tetrone —— C17H21N5O4
    6,13-Dimethyl-4,11-dipropyl-2,4,6,11,13-pentazatricyclo[8.4.0.03,8]tetradeca-1(10),2,8-triene-5,7,12,14-tetrone
    —— (5E)-3-(3-methoxypropyl)-5-[[9-methyl-4-oxo-2-[[(1R)-1-phenylethyl]amino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C25H26N4O3S2
    (5E)-3-(3-methoxypropyl)-5-[[9-methyl-4-oxo-2-[[(1R)-1-phenylethyl]amino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— ethyl 1-[3-[(E)-[3-(3-methoxypropyl)-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxylate —— C24H28N4O5S2
    ethyl 1-[3-[(E)-[3-(3-methoxypropyl)-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxylate
    —— 1-[3-[(Z)-2-cyano-3-(cyclohexylamino)-3-oxoprop-1-enyl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxamide —— C25H30N6O3
    1-[3-[(Z)-2-cyano-3-(cyclohexylamino)-3-oxoprop-1-enyl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxamide
    —— (5E)-3-(3-methoxypropyl)-5-[[9-methyl-4-oxo-2-[[(1S)-1-phenylethyl]amino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C25H26N4O3S2
    (5E)-3-(3-methoxypropyl)-5-[[9-methyl-4-oxo-2-[[(1S)-1-phenylethyl]amino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 6-imino-7-[2-(4-methoxyphenyl)ethyl]-11-methyl-2-oxo-N-(2-piperidin-1-ylethyl)-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide —— C29H34N6O3
    6-imino-7-[2-(4-methoxyphenyl)ethyl]-11-methyl-2-oxo-N-(2-piperidin-1-ylethyl)-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide
    —— 3-Ethyl-5-[(9-methyl-4-oxo-2-thiomorpholin-4-ylpyrido[1,2-a]pyrimidin-3-yl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C19H20N4O2S3
    3-Ethyl-5-[(9-methyl-4-oxo-2-thiomorpholin-4-ylpyrido[1,2-a]pyrimidin-3-yl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— N-(2-chlorobenzyl)-2-imino-5-oxo-1-propyl-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide —— C22H20ClN5O2
    N-(2-chlorobenzyl)-2-imino-5-oxo-1-propyl-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide
    —— 5-(3,5-Dimethylpiperidine-1-carbonyl)-6-imino-7-(2-phenylethyl)-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaen-2-one —— C27H29N5O2
    5-(3,5-Dimethylpiperidine-1-carbonyl)-6-imino-7-(2-phenylethyl)-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaen-2-one
    —— (5E)-3-[(4-fluorophenyl)methyl]-5-[[9-methyl-4-oxo-2-(3-propan-2-yloxypropylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C26H27FN4O3S2
    (5E)-3-[(4-fluorophenyl)methyl]-5-[[9-methyl-4-oxo-2-(3-propan-2-yloxypropylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 5-[[4-Oxo-2-(3-propan-2-yloxypropylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one —— C21H26N4O3S2
    5-[[4-Oxo-2-(3-propan-2-yloxypropylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 1,3-dimethyl-5-(3-nitrophenyl)-11-pentanoyl-5,11-dihydro-1H-indeno[2',1':5,6]pyrido[2,3-d]pyrimidine-2,4,6(3H)-trione —— C27H24N4O6
    1,3-dimethyl-5-(3-nitrophenyl)-11-pentanoyl-5,11-dihydro-1H-indeno[2',1':5,6]pyrido[2,3-d]pyrimidine-2,4,6(3H)-trione
    —— Ethyl 2-imino-1-[(4-methoxyphenyl)methyl]-10-methyl-5-oxo-1,6-dihydropyridino[2,3-d]pyridino[1,2-a]pyrimidine-3-carboxylate —— C23H22N4O4
    Ethyl 2-imino-1-[(4-methoxyphenyl)methyl]-10-methyl-5-oxo-1,6-dihydropyridino[2,3-d]pyridino[1,2-a]pyrimidine-3-carboxylate
    —— (4-ethylphenyl)-(2-methyl-4-morpholin-4-yl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)methanone —— C21H26N4O2
    (4-ethylphenyl)-(2-methyl-4-morpholin-4-yl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)methanone
    —— 6-methyl-2-[[5-(3-methylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]sulfanylmethyl]pyrido[1,2-a]pyrimidin-4-one —— C22H18N6O2S
    6-methyl-2-[[5-(3-methylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]sulfanylmethyl]pyrido[1,2-a]pyrimidin-4-one
    —— 3-[(4-Fluorophenyl)methyl]-5-[[7-methyl-2-(octylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C28H31FN4O2S2
    3-[(4-Fluorophenyl)methyl]-5-[[7-methyl-2-(octylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 3-[(3,4-dimethylphenyl)sulfonyl]-2-imino-10-methyl-1-(tetrahydro-2-furanylmethyl)-1,2-dihydro-5H-dipyrido[1,2-a:2,3-d]pyrimidin-5-one —— C25H26N4O4S
    3-[(3,4-dimethylphenyl)sulfonyl]-2-imino-10-methyl-1-(tetrahydro-2-furanylmethyl)-1,2-dihydro-5H-dipyrido[1,2-a:2,3-d]pyrimidin-5-one
    —— Ethyl 1-[3-[2-cyano-3-(cyclohexylamino)-3-oxoprop-1-enyl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxylate —— C27H33N5O4
    Ethyl 1-[3-[2-cyano-3-(cyclohexylamino)-3-oxoprop-1-enyl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxylate
    —— 5-[(7-Methyl-2-morpholin-4-yl-4-oxopyrido[1,2-a]pyrimidin-3-yl)methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H22N4O3S2
    5-[(7-Methyl-2-morpholin-4-yl-4-oxopyrido[1,2-a]pyrimidin-3-yl)methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 3-(3-Ethoxypropyl)-5-[[2-(2-methylpropylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C21H26N4O3S2
    3-(3-Ethoxypropyl)-5-[[2-(2-methylpropylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 2-imino-N~3~-(4-methoxyphenethyl)-10-methyl-5-oxo-1-pentyl-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carboxamide —— C27H31N5O3
    2-imino-N~3~-(4-methoxyphenethyl)-10-methyl-5-oxo-1-pentyl-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carboxamide
    —— 2-(2-Bromophenoxy)-N-{4-oxo-2-[({4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methyl)sulfanyl]-3H,4H-thieno[3,2-D]pyrimidin-3-YL}acetamide —— C23H16BrN5O4S2
    2-(2-Bromophenoxy)-N-{4-oxo-2-[({4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methyl)sulfanyl]-3H,4H-thieno[3,2-D]pyrimidin-3-YL}acetamide
    —— N-[6-[(9,10-dimethoxy-4-oxo-6,7-dihydropyrimido[6,1-a]isoquinolin-2-yl)amino]hexyl]heptanamide —— C27H40N4O4
    N-[6-[(9,10-dimethoxy-4-oxo-6,7-dihydropyrimido[6,1-a]isoquinolin-2-yl)amino]hexyl]heptanamide
    —— 5-(Benzenesulfonyl)-6-imino-7-[2-(4-methoxyphenyl)ethyl]-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaen-2-one —— C26H22N4O4S
    5-(Benzenesulfonyl)-6-imino-7-[2-(4-methoxyphenyl)ethyl]-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaen-2-one
    —— (3E)-3-benzylidene-2-iminopyrido[1,2-a]pyrimidin-4-one —— C15H11N3O
    (3E)-3-benzylidene-2-iminopyrido[1,2-a]pyrimidin-4-one
    —— (5E)-3-[(2R)-butan-2-yl]-5-[[2-(2-methoxyethylamino)-7-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H24N4O3S2
    (5E)-3-[(2R)-butan-2-yl]-5-[[2-(2-methoxyethylamino)-7-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-5-[[2-(3,4-dihydro-1H-isoquinolin-2-yl)-7-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(3-ethoxypropyl)-2-sulfanylidene-1,3-thiazolidin-4-one —— C27H28N4O3S2
    (5E)-5-[[2-(3,4-dihydro-1H-isoquinolin-2-yl)-7-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(3-ethoxypropyl)-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 8,8-dimethyl-2-(methylsulfanyl)-5-(pyridin-3-yl)-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline-4,6(3H,7H)-dione —— C19H20N4O2S
    8,8-dimethyl-2-(methylsulfanyl)-5-(pyridin-3-yl)-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline-4,6(3H,7H)-dione
    —— Ethyl 6-(2,5-dichlorobenzoyl)imino-7-(2-methoxyethyl)-2-oxo-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate —— C24H20Cl2N4O5
    Ethyl 6-(2,5-dichlorobenzoyl)imino-7-(2-methoxyethyl)-2-oxo-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate
    —— 2-[(2-chlorobenzyl)amino]-3-{(E)-[(2-chlorobenzyl)imino]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one —— C23H18Cl2N4O
    2-[(2-chlorobenzyl)amino]-3-{(E)-[(2-chlorobenzyl)imino]methyl}-4H-pyrido[1,2-a]pyrimidin-4-one
    —— (5E)-3-[(2S)-butan-2-yl]-5-[[2-(2-methoxyethylamino)-7-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C20H24N4O3S2
    (5E)-3-[(2S)-butan-2-yl]-5-[[2-(2-methoxyethylamino)-7-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (E)-N-(1-butyl-3-cyano-10-methyl-5-oxo-1H-dipyrido[1,2-a:2',3'-d]pyrimidin-2(5H)-ylidene)-3,4-dimethylbenzamide —— C26H25N5O2
    (E)-N-(1-butyl-3-cyano-10-methyl-5-oxo-1H-dipyrido[1,2-a:2',3'-d]pyrimidin-2(5H)-ylidene)-3,4-dimethylbenzamide
    —— propan-2-yl 7-methyl-2-methylsulfanyl-4-oxo-5-(3,4,5-trimethoxyphenyl)-5,8-dihydro-3H-pyrido[2,3-d]pyrimidine-6-carboxylate —— C22H27N3O6S
    propan-2-yl 7-methyl-2-methylsulfanyl-4-oxo-5-(3,4,5-trimethoxyphenyl)-5,8-dihydro-3H-pyrido[2,3-d]pyrimidine-6-carboxylate
    —— 1-[9-Methyl-3-[[3-[(4-methylphenyl)methyl]-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxamide —— C27H27N5O3S2
    1-[9-Methyl-3-[[3-[(4-methylphenyl)methyl]-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-4-carboxamide
    —— 2-imino-10-methyl-1-(4-methylbenzyl)-5-oxo-N-(tetrahydrofuran-2-ylmethyl)-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide —— C26H27N5O3
    2-imino-10-methyl-1-(4-methylbenzyl)-5-oxo-N-(tetrahydrofuran-2-ylmethyl)-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide
    —— 5-[[2-[(2-Hydroxy-2-phenylethyl)amino]-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-methyl-2-sulfanylidene-1,3-thiazolidin-4-one —— C21H18N4O3S2
    5-[[2-[(2-Hydroxy-2-phenylethyl)amino]-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-methyl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— Ethyl 1-isobutyl-5-oxo-2-[(2-phenoxypropanoyl)imino]-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxylate —— C27H28N4O5
    Ethyl 1-isobutyl-5-oxo-2-[(2-phenoxypropanoyl)imino]-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxylate
    —— N-(2,3-dihydro-1,4-benzodioxin-6-yl)-9-methyl-4-oxo-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidine-2-carboxamide —— C20H15N3O4S
    N-(2,3-dihydro-1,4-benzodioxin-6-yl)-9-methyl-4-oxo-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidine-2-carboxamide
    —— (5E)-3-[(2-chlorophenyl)methyl]-5-[[2-[(3S,5S)-3,5-dimethylpiperidin-1-yl]-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C26H25ClN4O2S2
    (5E)-3-[(2-chlorophenyl)methyl]-5-[[2-[(3S,5S)-3,5-dimethylpiperidin-1-yl]-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-5-[[2-(benzylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one —— C22H20N4O2S2
    (5E)-5-[[2-(benzylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-5-[[9-methyl-4-oxo-2-[[(2R)-oxolan-2-yl]methylamino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propyl-2-sulfanylidene-1,3-thiazolidin-4-one —— C21H24N4O3S2
    (5E)-5-[[9-methyl-4-oxo-2-[[(2R)-oxolan-2-yl]methylamino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propyl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-5-[[9-methyl-4-oxo-2-[[(2S)-oxolan-2-yl]methylamino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propyl-2-sulfanylidene-1,3-thiazolidin-4-one —— C21H24N4O3S2
    (5E)-5-[[9-methyl-4-oxo-2-[[(2S)-oxolan-2-yl]methylamino]pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propyl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— (5E)-3-[(2-chlorophenyl)methyl]-5-[[2-[(3R,5S)-3,5-dimethylpiperidin-1-yl]-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one —— C26H25ClN4O2S2
    (5E)-3-[(2-chlorophenyl)methyl]-5-[[2-[(3R,5S)-3,5-dimethylpiperidin-1-yl]-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one
    —— 5-{4-nitro-1,3-benzodioxol-5-yl}-8,8-dimethyl-2-(methylsulfanyl)-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline-4,6(3H,7H)-dione —— C21H20N4O6S
    5-{4-nitro-1,3-benzodioxol-5-yl}-8,8-dimethyl-2-(methylsulfanyl)-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline-4,6(3H,7H)-dione
    —— 2-[({7-Chloro-4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methyl)sulfanyl]-3-(1-phenylbutan-2-YL)-3,4-dihydroquinazolin-4-one —— C27H23ClN4O2S
    2-[({7-Chloro-4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methyl)sulfanyl]-3-(1-phenylbutan-2-YL)-3,4-dihydroquinazolin-4-one
    —— 4-(2-(((7-chloro-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)methyl)thio)-4-oxoquinazolin-3(4H)-yl)-N-phenethylbutanamide —— C29H26ClN5O3S
    4-(2-(((7-chloro-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)methyl)thio)-4-oxoquinazolin-3(4H)-yl)-N-phenethylbutanamide
    —— (5E)-5-[[2-(furan-2-ylmethylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-hexyl-2-sulfanylidene-1,3-thiazolidin-4-one —— C23H24N4O3S2
    (5E)-5-[[2-(furan-2-ylmethylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-hexyl-2-sulfanylidene-1,3-thiazolidin-4-one
    —— ethyl (3R)-1-[3-[(Z)-2-cyano-3-(furan-2-ylmethylamino)-3-oxoprop-1-enyl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-3-carboxylate —— C26H27N5O5
    ethyl (3R)-1-[3-[(Z)-2-cyano-3-(furan-2-ylmethylamino)-3-oxoprop-1-enyl]-9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl]piperidine-3-carboxylate