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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
    —— 1-[(2S)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-(4-fluorophenoxy)ethanone —— C23H28FN5O3
    1-[(2S)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-(4-fluorophenoxy)ethanone
    —— 1-[2-[(2S)-1-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C21H28N6O2S
    1-[2-[(2S)-1-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— (2S)-2-(2-fluorophenoxy)-1-[4-(methylamino)-2-(1-methylpiperidin-4-yl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]butan-1-one —— C24H32FN5O2
    (2S)-2-(2-fluorophenoxy)-1-[4-(methylamino)-2-(1-methylpiperidin-4-yl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]butan-1-one
    —— 1-[4-(dimethylamino)-2-[(2S)-1-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C22H30N6O2S
    1-[4-(dimethylamino)-2-[(2S)-1-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— (2S)-1-[4-[4-(methylamino)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-2-yl]piperidin-1-yl]-2-phenyl-2-pyrrolidin-1-ylethanone —— C25H34N6O
    (2S)-1-[4-[4-(methylamino)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-2-yl]piperidin-1-yl]-2-phenyl-2-pyrrolidin-1-ylethanone
    —— 1-[4-[4-[[(2R)-1-(2-methoxyphenyl)propan-2-yl]amino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone —— C25H35N5O2
    1-[4-[4-[[(2R)-1-(2-methoxyphenyl)propan-2-yl]amino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone
    —— 2-[1-(4-methoxy-3-methylphenyl)sulfonylpiperidin-4-yl]-N,7-dimethyl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-4-amine —— C22H31N5O3S
    2-[1-(4-methoxy-3-methylphenyl)sulfonylpiperidin-4-yl]-N,7-dimethyl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-4-amine
    —— (4R)-1-[4-[7-acetyl-4-(methylamino)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-2-yl]piperidin-1-yl]-4-pyrrolidin-1-ylpentan-1-one —— C24H38N6O2
    (4R)-1-[4-[7-acetyl-4-(methylamino)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-2-yl]piperidin-1-yl]-4-pyrrolidin-1-ylpentan-1-one
    —— 1-[(2R)-2-[4-[(3,4-dimethoxyphenyl)methylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone —— C24H33N5O3
    1-[(2R)-2-[4-[(3,4-dimethoxyphenyl)methylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone
    —— 1-[4-(methylamino)-2-(1-methylpiperidin-4-yl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]-2-(2,2,6,6-tetramethyl-1,3-dihydropyridin-4-yl)ethanone —— C25H40N6O
    1-[4-(methylamino)-2-(1-methylpiperidin-4-yl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]-2-(2,2,6,6-tetramethyl-1,3-dihydropyridin-4-yl)ethanone
    —— 2-[(2S)-1-[(3,5-dimethyl-1,2-oxazol-4-yl)sulfonyl]pyrrolidin-2-yl]-N,6-dimethyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine —— C18H26N6O3S
    2-[(2S)-1-[(3,5-dimethyl-1,2-oxazol-4-yl)sulfonyl]pyrrolidin-2-yl]-N,6-dimethyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine
    —— 6-(4-fluorophenyl)sulfonyl-N-methyl-2-[(3R)-1-methylpiperidin-3-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine —— C20H26FN5O2S
    6-(4-fluorophenyl)sulfonyl-N-methyl-2-[(3R)-1-methylpiperidin-3-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine
    —— 2-[(4-methoxyphenyl)methyl-methylamino]-1-[4-(methylamino)-2-[(2S)-pyrrolidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C23H32N6O2
    2-[(4-methoxyphenyl)methyl-methylamino]-1-[4-(methylamino)-2-[(2S)-pyrrolidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— 3-(2-fluorophenyl)-1-[(2R)-2-[6-methyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]propan-1-one —— C23H30FN5O
    3-(2-fluorophenyl)-1-[(2R)-2-[6-methyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]propan-1-one
    —— 4-(4-fluorophenyl)-1-[(2R)-2-[6-methyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]butan-1-one —— C24H32FN5O
    4-(4-fluorophenyl)-1-[(2R)-2-[6-methyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]butan-1-one
    —— 1-[(2R)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-(4-fluorophenoxy)ethanone —— C23H28FN5O3
    1-[(2R)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-(4-fluorophenoxy)ethanone
    —— 1-[(2R)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-3-(2-fluorophenyl)propan-1-one —— C24H30FN5O2
    1-[(2R)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-3-(2-fluorophenyl)propan-1-one
    —— 1-[2-[(2R)-1-(4-fluorophenyl)sulfonylpiperidin-2-yl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C21H26FN5O3S
    1-[2-[(2R)-1-(4-fluorophenyl)sulfonylpiperidin-2-yl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— 2-[(2S)-1-(4-methoxy-2,5-dimethylphenyl)sulfonylpiperidin-2-yl]-N-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine —— C22H31N5O3S
    2-[(2S)-1-(4-methoxy-2,5-dimethylphenyl)sulfonylpiperidin-2-yl]-N-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine
    —— [1-(4-fluorophenyl)cyclopentyl]-[(2S)-2-[4-(methylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]methanone —— C25H32FN5O
    [1-(4-fluorophenyl)cyclopentyl]-[(2S)-2-[4-(methylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]methanone
    —— 1-[(2R)-2-[6-[[4-ethoxy-3-(hydroxymethyl)phenyl]methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C24H33N5O3
    1-[(2R)-2-[6-[[4-ethoxy-3-(hydroxymethyl)phenyl]methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 2-[(4-methoxyphenyl)methyl-methylamino]-1-[4-(methylamino)-2-[(2R)-pyrrolidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C23H32N6O2
    2-[(4-methoxyphenyl)methyl-methylamino]-1-[4-(methylamino)-2-[(2R)-pyrrolidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— 1-[4-(dimethylamino)-2-[(2R)-1-(4-methyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C21H28N6O2S
    1-[4-(dimethylamino)-2-[(2R)-1-(4-methyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— 1-[4-[4-[[2-(3-fluorophenyl)-2-methylpropyl]amino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone —— C25H34FN5O
    1-[4-[4-[[2-(3-fluorophenyl)-2-methylpropyl]amino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone
    —— 1-[(2S)-2-[4-[(3,4-dimethoxyphenyl)methylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone —— C24H33N5O3
    1-[(2S)-2-[4-[(3,4-dimethoxyphenyl)methylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone
    —— 1-[(2S)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-3-(2-fluorophenyl)propan-1-one —— C24H30FN5O2
    1-[(2S)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-3-(2-fluorophenyl)propan-1-one
    —— 2-[(2R)-1-(4-methoxy-3-methylphenyl)sulfonylpiperidin-2-yl]-N-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine —— C21H29N5O3S
    2-[(2R)-1-(4-methoxy-3-methylphenyl)sulfonylpiperidin-2-yl]-N-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine
    —— 1-[(2R)-2-[4-[2-(3-fluorophenoxy)ethylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C22H28FN5O2
    1-[(2R)-2-[4-[2-(3-fluorophenoxy)ethylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 1-[(2S)-2-[6-[[2-methoxy-5-(methoxymethyl)phenyl]methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C24H33N5O3
    1-[(2S)-2-[6-[[2-methoxy-5-(methoxymethyl)phenyl]methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 1-[(2R)-2-[6-acetyl-4-(dimethylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-morpholin-4-ylethanone —— C22H34N6O3
    1-[(2R)-2-[6-acetyl-4-(dimethylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-morpholin-4-ylethanone
    —— 1-[4-(dimethylamino)-2-[(2R)-1-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C22H30N6O2S
    1-[4-(dimethylamino)-2-[(2R)-1-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— 1-[(2S)-2-[6-[(5-fluoro-1-methylindol-3-yl)methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C24H29FN6O
    1-[(2S)-2-[6-[(5-fluoro-1-methylindol-3-yl)methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 1-[(2R)-2-[6-[(5-fluoro-1-methylindol-3-yl)methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C24H29FN6O
    1-[(2R)-2-[6-[(5-fluoro-1-methylindol-3-yl)methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 1-[(2R)-2-[4-(methylamino)-6-(1-propan-2-ylpiperidine-4-carbonyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone —— C24H38N6O2
    1-[(2R)-2-[4-(methylamino)-6-(1-propan-2-ylpiperidine-4-carbonyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone
    —— 1-[(2R)-2-[6-[(2-methoxy-4-methylphenyl)methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C23H31N5O2
    1-[(2R)-2-[6-[(2-methoxy-4-methylphenyl)methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 2-[(2R)-1-[(3,5-difluorophenyl)methylsulfonyl]pyrrolidin-2-yl]-N,6-dimethyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine —— C20H25F2N5O2S
    2-[(2R)-1-[(3,5-difluorophenyl)methylsulfonyl]pyrrolidin-2-yl]-N,6-dimethyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine
    —— 1-[(2R)-2-[6-[[2-methoxy-5-(methoxymethyl)phenyl]methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C24H33N5O3
    1-[(2R)-2-[6-[[2-methoxy-5-(methoxymethyl)phenyl]methyl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— 1-[(2R)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-(1-ethylpiperidin-4-yl)ethanone —— C24H38N6O2
    1-[(2R)-2-[6-acetyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]-2-(1-ethylpiperidin-4-yl)ethanone
    —— 2-[(2S)-1-acetylpyrrolidin-2-yl]-N,N-diethyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-sulfonamide —— C18H30N6O3S
    2-[(2S)-1-acetylpyrrolidin-2-yl]-N,N-diethyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-sulfonamide
    —— 1-[4-[[(1S)-1-(3,4-dimethylphenyl)ethyl]amino]-2-(1-methylpiperidin-4-yl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C25H35N5O
    1-[4-[[(1S)-1-(3,4-dimethylphenyl)ethyl]amino]-2-(1-methylpiperidin-4-yl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— 2-[(3R)-1-(2-methoxyphenyl)sulfonylpiperidin-3-yl]-N,6-dimethyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine —— C21H29N5O3S
    2-[(3R)-1-(2-methoxyphenyl)sulfonylpiperidin-3-yl]-N,6-dimethyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-amine
    —— 1-[2-[(2S)-1-acetylpiperidin-2-yl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]-2-(2-methyl-1,3-thiazol-4-yl)ethanone —— C21H28N6O2S
    1-[2-[(2S)-1-acetylpiperidin-2-yl]-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]-2-(2-methyl-1,3-thiazol-4-yl)ethanone
    —— [4-(methoxymethyl)phenyl]-[4-(methylamino)-2-(1-methylpiperidin-4-yl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]methanone —— C23H31N5O2
    [4-(methoxymethyl)phenyl]-[4-(methylamino)-2-(1-methylpiperidin-4-yl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]methanone
    —— 4-(4-fluoro-3-methylphenyl)-1-[(2S)-2-[6-methyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]butan-1-one —— C24H32FN5O
    4-(4-fluoro-3-methylphenyl)-1-[(2S)-2-[6-methyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]butan-1-one
    —— 2-[(2S)-1-(4-methoxy-3-methylphenyl)sulfonylpiperidin-2-yl]-N-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine —— C21H29N5O3S
    2-[(2S)-1-(4-methoxy-3-methylphenyl)sulfonylpiperidin-2-yl]-N-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine
    —— 2-[(2R)-1-acetylpyrrolidin-2-yl]-N,N-diethyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-sulfonamide —— C18H30N6O3S
    2-[(2R)-1-acetylpyrrolidin-2-yl]-N,N-diethyl-4-(methylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-sulfonamide
    —— 1-[(2S)-2-[4-[2-(3-fluorophenoxy)ethylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone —— C22H28FN5O2
    1-[(2S)-2-[4-[2-(3-fluorophenoxy)ethylamino]-6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]pyrrolidin-1-yl]ethanone
    —— [1-(4-fluorophenyl)cyclopentyl]-[(2R)-2-[4-(methylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]methanone —— C25H32FN5O
    [1-(4-fluorophenyl)cyclopentyl]-[(2R)-2-[4-(methylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]methanone
    —— 1-[4-(dimethylamino)-2-[(2S)-1-[(1-methylindol-3-yl)methyl]piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone —— C26H34N6O
    1-[4-(dimethylamino)-2-[(2S)-1-[(1-methylindol-3-yl)methyl]piperidin-2-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone
    —— (4S)-1-[4-[7-acetyl-4-(methylamino)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-2-yl]piperidin-1-yl]-4-pyrrolidin-1-ylpentan-1-one —— C24H38N6O2
    (4S)-1-[4-[7-acetyl-4-(methylamino)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-2-yl]piperidin-1-yl]-4-pyrrolidin-1-ylpentan-1-one