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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
    —— (5R)-N-[4-(1-ethoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C24H29N5O4
    (5R)-N-[4-(1-ethoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-ethylpiperidin-1-yl]-N-(4-methylphenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5S)-2-[(2S)-2-ethylpiperidin-1-yl]-N-(4-methylphenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-methylpiperidin-1-yl]-N-(4-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22N6O5
    (5S)-2-[(2S)-2-methylpiperidin-1-yl]-N-(4-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,4-dimethylphenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5S)-N-(2,4-dimethylphenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2R)-2-methylpiperidin-1-yl]-N-(3-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22N6O5
    (5S)-2-[(2R)-2-methylpiperidin-1-yl]-N-(3-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(2-phenylethyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(2-phenylethyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2-chlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22ClN5O3
    (5S)-N-(2-chlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(4-ethylphenyl)-2-[(2S)-2-ethylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C23H29N5O3
    (5R)-N-(4-ethylphenyl)-2-[(2S)-2-ethylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(3,4-dichlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21Cl2N5O3
    (5S)-N-(3,4-dichlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(3-chloro-4-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H24ClN5O3
    (5R)-N-(3-chloro-4-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(3,5-dichlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21Cl2N5O3
    (5S)-N-(3,5-dichlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(2-phenylethyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5S)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(2-phenylethyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(2-methyl-4-nitrophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H24N6O5
    (5R)-N-(2-methyl-4-nitrophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,5-dimethylphenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5S)-N-(2,5-dimethylphenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-methylpiperidin-1-yl]-N-(3-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22N6O5
    (5S)-2-[(2S)-2-methylpiperidin-1-yl]-N-(3-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(3,5-dimethylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5R)-N-(3,5-dimethylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-[4-(1-ethoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C24H29N5O4
    (5S)-N-[4-(1-ethoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(5-chloro-2-methoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H24ClN5O4
    (5S)-N-(5-chloro-2-methoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(4-acetamidophenyl)-2-[(2S)-2-ethylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C23H28N6O4
    (5S)-N-(4-acetamidophenyl)-2-[(2S)-2-ethylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,3-dichlorophenyl)-2-[(3R)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21Cl2N5O3
    (5S)-N-(2,3-dichlorophenyl)-2-[(3R)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,4-dimethoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O5
    (5S)-N-(2,4-dimethoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(2,5-dimethylphenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5R)-N-(2,5-dimethylphenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2-fluorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22FN5O3
    (5S)-N-(2-fluorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,3-dichlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21Cl2N5O3
    (5S)-N-(2,3-dichlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,4-dimethoxyphenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O5
    (5S)-N-(2,4-dimethoxyphenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-methylpiperidin-1-yl]-N-naphthalen-1-yl-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C24H25N5O3
    (5S)-2-[(2S)-2-methylpiperidin-1-yl]-N-naphthalen-1-yl-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(2-methyl-5-nitrophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H24N6O5
    (5R)-N-(2-methyl-5-nitrophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2-methyl-5-nitrophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H24N6O5
    (5S)-N-(2-methyl-5-nitrophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(3,4-difluorophenyl)-2-[(3R)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21F2N5O3
    (5S)-N-(3,4-difluorophenyl)-2-[(3R)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2R)-2-methylpiperidin-1-yl]-N-(4-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22N6O5
    (5S)-2-[(2R)-2-methylpiperidin-1-yl]-N-(4-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(4-bromophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22BrN5O3
    (5S)-N-(4-bromophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(3-chloro-4-fluorophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21ClFN5O3
    (5S)-N-(3-chloro-4-fluorophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(3,4,5-trimethoxyphenyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C23H29N5O6
    (5S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(3,4,5-trimethoxyphenyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-[4-chloro-3-(trifluoromethyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H21ClF3N5O3
    (5S)-N-[4-chloro-3-(trifluoromethyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,3-dichlorophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21Cl2N5O3
    (5S)-N-(2,3-dichlorophenyl)-2-[(3S)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(4-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H25N5O3
    (5S)-N-(4-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(4-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H25N5O3
    (5R)-N-(4-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2R)-2-ethylpiperidin-1-yl]-N-(4-fluorophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H24FN5O3
    (5S)-2-[(2R)-2-ethylpiperidin-1-yl]-N-(4-fluorophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(3-chlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22ClN5O3
    (5S)-N-(3-chlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(4-propan-2-ylphenyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C23H29N5O3
    (5S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-N-(4-propan-2-ylphenyl)-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(4-fluorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H22FN5O3
    (5S)-N-(4-fluorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(2,5-dimethylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5R)-N-(2,5-dimethylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(2-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C21H25N5O3
    (5R)-N-(2-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(4-acetamidophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H26N6O4
    (5S)-N-(4-acetamidophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-[4-(1-butoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C26H33N5O4
    (5R)-N-[4-(1-butoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-[4-(1-butoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C26H33N5O4
    (5S)-N-[4-(1-butoxyethenyl)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H25N5O5
    (5S)-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(2-methoxy-5-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O4
    (5R)-N-(2-methoxy-5-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5S)-N-(2,4-dichlorophenyl)-2-[(3R)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C20H21Cl2N5O3
    (5S)-N-(2,4-dichlorophenyl)-2-[(3R)-3-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide
    —— (5R)-N-(4-ethylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide —— C22H27N5O3
    (5R)-N-(4-ethylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide