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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,6S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(2-prop-2-enoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C23H25N5O3
    (5R,6S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(2-prop-2-enoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-5-(2,4-dichlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H19Cl2N5O2
    (5S,6S)-5-(2,4-dichlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-2-[(2S)-2-ethylpiperidin-1-yl]-4,7-dioxo-5-pyridin-2-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H22N6O2
    (5S,6S)-2-[(2S)-2-ethylpiperidin-1-yl]-4,7-dioxo-5-pyridin-2-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5S,6S)-6-cyano-5-(2,5-dimethoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C24H27N5O6
    ethyl 1-[(5S,6S)-6-cyano-5-(2,5-dimethoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5S,6S)-5-(2-chloro-5-nitrophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H19ClN6O4
    (5S,6S)-5-(2-chloro-5-nitrophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(3-methylphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H23N5O4
    (5S,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(3-methylphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-(4-propan-2-ylphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C24H27N5O4
    (5S,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-(4-propan-2-ylphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(4-methylphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H23N5O4
    (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(4-methylphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5S,6R)-6-cyano-5-(3-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C23H25N5O5
    ethyl 1-[(5S,6R)-6-cyano-5-(3-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— ethyl 1-[(5S,6R)-6-cyano-4,7-dioxo-5-(2,3,4-trimethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C25H29N5O7
    ethyl 1-[(5S,6R)-6-cyano-4,7-dioxo-5-(2,3,4-trimethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5S,6S)-5-(3-bromophenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H20BrN5O4
    (5S,6S)-5-(3-bromophenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5R,6S)-6-cyano-4,7-dioxo-5-pyridin-4-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C21H22N6O4
    ethyl 1-[(5R,6S)-6-cyano-4,7-dioxo-5-pyridin-4-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5S,6S)-5-(furan-2-yl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C18H19N5O3
    (5S,6S)-5-(furan-2-yl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-hydroxy-3-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H23N5O6
    (5S,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-hydroxy-3-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-5-(2-chlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H20ClN5O2
    (5S,6S)-5-(2-chlorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-fluorophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H20FN5O4
    (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-fluorophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6R)-5-[4-(diethylamino)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C24H30N6O2
    (5R,6R)-5-[4-(diethylamino)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5R,6R)-6-cyano-4,7-dioxo-5-(2,4,5-trimethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C25H29N5O7
    ethyl 1-[(5R,6R)-6-cyano-4,7-dioxo-5-(2,4,5-trimethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5R,6S)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(2-prop-2-enoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C23H25N5O3
    (5R,6S)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(2-prop-2-enoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5R,6S)-6-cyano-4,7-dioxo-5-pyridin-2-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C21H22N6O4
    ethyl 1-[(5R,6S)-6-cyano-4,7-dioxo-5-pyridin-2-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— ethyl 1-[(5S,6S)-6-cyano-5-(2-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C22H22N6O6
    ethyl 1-[(5S,6S)-6-cyano-5-(2-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— ethyl 1-[(5S,6R)-6-cyano-5-(2-ethoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C24H27N5O5
    ethyl 1-[(5S,6R)-6-cyano-5-(2-ethoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(3-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H20N6O6
    (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(3-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5R,6R)-6-cyano-5-(2-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C23H25N5O5
    ethyl 1-[(5R,6R)-6-cyano-5-(2-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-pyridin-3-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H20N6O4
    (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-pyridin-3-yl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-5-(2-chlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H20ClN5O2
    (5S,6S)-5-(2-chlorophenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-(4-propan-2-ylphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C24H27N5O4
    (5R,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-(4-propan-2-ylphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-5-(4-bromophenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H20BrN5O4
    (5S,6S)-5-(4-bromophenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-fluoro-5-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H19FN6O6
    (5S,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-fluoro-5-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-5-(furan-2-yl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C18H19N5O3
    (5S,6S)-5-(furan-2-yl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5R,6S)-6-cyano-5-(2-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C22H22N6O6
    ethyl 1-[(5R,6S)-6-cyano-5-(2-nitrophenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— (5R,6S)-5-(2-hydroxy-3-methoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H23N5O4
    (5R,6S)-5-(2-hydroxy-3-methoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-5-(3-methoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H23N5O3
    (5R,6S)-5-(3-methoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(4-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H23N5O5
    (5R,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(4-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H23N5O5
    (5S,6R)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(2-methoxyphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-5-(2-ethoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H25N5O3
    (5R,6S)-5-(2-ethoxyphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(4-phenylmethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C27H27N5O3
    (5R,6S)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(4-phenylmethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-(2,4,5-trimethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C24H27N5O7
    (5R,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-5-(2,4,5-trimethoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-5-[4-(diethylamino)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C24H30N6O2
    (5R,6S)-5-[4-(diethylamino)phenyl]-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-5-(2,3-dimethoxyphenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H25N5O4
    (5R,6S)-5-(2,3-dimethoxyphenyl)-2-[(2R)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(4-methylphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C22H23N5O4
    (5S,6S)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-5-(4-methylphenyl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6R)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(4-propoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C23H27N5O3
    (5R,6R)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-5-(4-propoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-5-(3-bromophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H20BrN5O2
    (5R,6S)-5-(3-bromophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6R)-5-(2,5-dimethoxyphenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C23H25N5O6
    (5S,6R)-5-(2,5-dimethoxyphenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-2-[(2S)-2-methylpiperidin-1-yl]-5-naphthalen-1-yl-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C24H23N5O2
    (5R,6S)-2-[(2S)-2-methylpiperidin-1-yl]-5-naphthalen-1-yl-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5S,6R)-5-(3-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H23N5O2
    (5S,6R)-5-(3-methylphenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6S)-5-(3,5-difluorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C20H19F2N5O2
    (5R,6S)-5-(3,5-difluorophenyl)-2-[(2S)-2-methylpiperidin-1-yl]-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— (5R,6R)-5-(4-chlorophenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile —— C21H20ClN5O4
    (5R,6R)-5-(4-chlorophenyl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-4,7-dioxo-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-6-carbonitrile
    —— ethyl 1-[(5R,6R)-6-cyano-4,7-dioxo-5-phenyl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C22H23N5O4
    ethyl 1-[(5R,6R)-6-cyano-4,7-dioxo-5-phenyl-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate
    —— ethyl 1-[(5S,6S)-6-cyano-4,7-dioxo-5-(4-propoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate —— C25H29N5O5
    ethyl 1-[(5S,6S)-6-cyano-4,7-dioxo-5-(4-propoxyphenyl)-1,5,6,8-tetrahydropyrido[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylate