摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词
历史搜索
    热门化合物HOT
    • 喹啉
    • 水杨醛
    • 二溴甲烷
    • 谷胱甘肽
    • L-乳酸
    • 苯巴比妥
    • 辣椒碱
    • 非那明
    • 百草枯
    • 联苯烯
    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 吡唑并嘧啶类

    吡唑并嘧啶类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 5-methyl-2-[(2R)-1-(thian-4-yl)pyrrolidin-2-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine —— C17H21F3N4S
    5-methyl-2-[(2R)-1-(thian-4-yl)pyrrolidin-2-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine
    —— 5-methyl-2-[(2R)-1-pyrrolidin-1-ylsulfonylpiperidin-2-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine —— C17H22F3N5O2S
    5-methyl-2-[(2R)-1-pyrrolidin-1-ylsulfonylpiperidin-2-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine
    —— 7-(2-Methoxyethoxy)-5-methyl-2-(oxan-4-yl)pyrazolo[1,5-a]pyrimidine —— C15H21N3O3
    7-(2-Methoxyethoxy)-5-methyl-2-(oxan-4-yl)pyrazolo[1,5-a]pyrimidine
    —— 5-[(2S)-1-(2,2-dimethylpropanoyl)pyrrolidin-2-yl]-12-(2-methylpropanoyl)-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C22H31N5O3
    5-[(2S)-1-(2,2-dimethylpropanoyl)pyrrolidin-2-yl]-12-(2-methylpropanoyl)-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— (2,4-dimethylpyrimidin-5-yl)-[(2S)-2-[5-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]methanone —— C20H21F3N6O
    (2,4-dimethylpyrimidin-5-yl)-[(2S)-2-[5-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]methanone
    —— N-methyl-3-[[(3R)-3-[5-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]methyl]pyridin-2-amine —— C20H23F3N6
    N-methyl-3-[[(3R)-3-[5-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]methyl]pyridin-2-amine
    —— 5-methyl-2-[1-[(2S)-oxolane-2-carbonyl]piperidin-4-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one —— C17H22N4O3
    5-methyl-2-[1-[(2S)-oxolane-2-carbonyl]piperidin-4-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one
    —— 5-methyl-2-[(2R)-1-[(2-methylpyrimidin-5-yl)methyl]piperidin-2-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine —— C19H21F3N6
    5-methyl-2-[(2R)-1-[(2-methylpyrimidin-5-yl)methyl]piperidin-2-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine
    —— 5-[(2R)-1-(2,2-dimethylpropanoyl)pyrrolidin-2-yl]-12-(2-methylpropanoyl)-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C22H31N5O3
    5-[(2R)-1-(2,2-dimethylpropanoyl)pyrrolidin-2-yl]-12-(2-methylpropanoyl)-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— 12-(2-methylpropanoyl)-5-[(2S)-1-methylsulfonylpyrrolidin-2-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C18H25N5O4S
    12-(2-methylpropanoyl)-5-[(2S)-1-methylsulfonylpyrrolidin-2-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— 5-[(2R)-1-(2-methoxyacetyl)pyrrolidin-2-yl]-12-(2-methylpropanoyl)-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C20H27N5O4
    5-[(2R)-1-(2-methoxyacetyl)pyrrolidin-2-yl]-12-(2-methylpropanoyl)-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— 12-(2-methylpropanoyl)-5-[(2R)-1-methylsulfonylpyrrolidin-2-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C18H25N5O4S
    12-(2-methylpropanoyl)-5-[(2R)-1-methylsulfonylpyrrolidin-2-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— 2-methyl-1-[(2R)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]propan-1-one —— C20H25F3N4OS
    2-methyl-1-[(2R)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]propan-1-one
    —— 2-methyl-1-[(2S)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]propan-1-one —— C20H25F3N4OS
    2-methyl-1-[(2S)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]propan-1-one
    —— 1-[(3S)-3-[(5R,7S)-5-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]-2-methylpropan-1-one —— C19H29F3N4O
    1-[(3S)-3-[(5R,7S)-5-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]-2-methylpropan-1-one
    —— 2-methyl-1-[(2S)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]propan-1-one —— C19H23F3N4OS
    2-methyl-1-[(2S)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]propan-1-one
    —— [4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-4-ylmethanone —— C22H29F2N5O
    [4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-4-ylmethanone
    —— 12-(2,2-dimethylpropanoyl)-5-[(2S)-1-(2-methylpropanoyl)pyrrolidin-2-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C22H31N5O3
    12-(2,2-dimethylpropanoyl)-5-[(2S)-1-(2-methylpropanoyl)pyrrolidin-2-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— 1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-[(1R)-cyclopent-2-en-1-yl]ethanone —— C23H34F2N4O
    1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-[(1R)-cyclopent-2-en-1-yl]ethanone
    —— 2-methyl-1-[(2R)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]propan-1-one —— C19H23F3N4OS
    2-methyl-1-[(2R)-2-[(5S,7R)-5-thiophen-2-yl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]propan-1-one
    —— 2-tert-butyl-5-[(2R)-1-[(3-methoxyphenyl)methyl]pyrrolidin-2-yl]pyrazolo[1,5-a]pyrimidin-7-amine —— C22H29N5O
    2-tert-butyl-5-[(2R)-1-[(3-methoxyphenyl)methyl]pyrrolidin-2-yl]pyrazolo[1,5-a]pyrimidin-7-amine
    —— [(3R)-3-[2-tert-butyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-2-ylmethanone —— C22H24F3N5O
    [(3R)-3-[2-tert-butyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-2-ylmethanone
    —— 1-[(2S)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-3-indazol-1-ylpropan-1-one —— C24H28N6O
    1-[(2S)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-3-indazol-1-ylpropan-1-one
    —— 12-(2-Methylpropanoyl)-5-[1-(2-methylpropanoyl)piperidin-4-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one —— C22H31N5O3
    12-(2-Methylpropanoyl)-5-[1-(2-methylpropanoyl)piperidin-4-yl]-2,6,7,12-tetrazatricyclo[7.4.0.03,7]trideca-1(9),2,4-trien-8-one
    —— 2-tert-butyl-5-[(3S)-1-[[(2S)-oxolan-2-yl]methyl]piperidin-3-yl]pyrazolo[1,5-a]pyrimidin-7-amine —— C20H31N5O
    2-tert-butyl-5-[(3S)-1-[[(2S)-oxolan-2-yl]methyl]piperidin-3-yl]pyrazolo[1,5-a]pyrimidin-7-amine
    —— [4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-cyclohexylmethanone —— C23H36F2N4O
    [4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-cyclohexylmethanone
    —— 2-tert-butyl-5-[(3R)-1-(1-methyl-2-oxopyridine-4-carbonyl)pyrrolidin-3-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one —— C21H25N5O3
    2-tert-butyl-5-[(3R)-1-(1-methyl-2-oxopyridine-4-carbonyl)pyrrolidin-3-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one
    —— 1-[(3S)-3-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-pyridin-2-ylethanone —— C23H31F2N5O
    1-[(3S)-3-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-pyridin-2-ylethanone
    —— 1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-methylpropan-1-one —— C20H32F2N4O
    1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-methylpropan-1-one
    —— 1-[(2R)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-3-indazol-1-ylpropan-1-one —— C24H28N6O
    1-[(2R)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-3-indazol-1-ylpropan-1-one
    —— [(3S)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-2-ylmethanone —— C22H28F3N5O
    [(3S)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-2-ylmethanone
    —— (4S)-4-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidine-1-carbonyl]-1-methylpyrrolidin-2-one —— C22H33F2N5O2
    (4S)-4-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidine-1-carbonyl]-1-methylpyrrolidin-2-one
    —— 5-tert-butyl-2-[1-[[(3R)-oxolan-3-yl]methyl]piperidin-4-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine —— C21H29F3N4O
    5-tert-butyl-2-[1-[[(3R)-oxolan-3-yl]methyl]piperidin-4-yl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine
    —— [(2R)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-(2-methoxyphenyl)methanone —— C22H26N4O2
    [(2R)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-(2-methoxyphenyl)methanone
    —— 3-[(3R)-3-[(5R,7S)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-N,N,2,2-tetramethylpropan-1-amine —— C23H41F2N5
    3-[(3R)-3-[(5R,7S)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-N,N,2,2-tetramethylpropan-1-amine
    —— 1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-3-methoxypropan-1-one —— C20H32F2N4O2
    1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-3-methoxypropan-1-one
    —— 2-tert-butyl-5-[(3S)-1-(1-methyl-2-oxopyridine-4-carbonyl)pyrrolidin-3-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one —— C21H25N5O3
    2-tert-butyl-5-[(3S)-1-(1-methyl-2-oxopyridine-4-carbonyl)pyrrolidin-3-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one
    —— 1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-cyclopentylethanone —— C23H36F2N4O
    1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-cyclopentylethanone
    —— 1-[(2S)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-2-(4-fluorophenoxy)ethanone —— C22H25FN4O2
    1-[(2S)-2-(2-tert-butylpyrazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-1-yl]-2-(4-fluorophenoxy)ethanone
    —— [(3S)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-[(1S)-cyclohex-3-en-1-yl]methanone —— C23H33F3N4O
    [(3S)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-[(1S)-cyclohex-3-en-1-yl]methanone
    —— [4-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-[(1R)-cyclohex-3-en-1-yl]methanone —— C23H33F3N4O
    [4-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-[(1R)-cyclohex-3-en-1-yl]methanone
    —— 1-[(3R)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-methoxyethanone —— C19H29F3N4O2
    1-[(3R)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-methoxyethanone
    —— 2-tert-butyl-5-[(3S)-1-[2-[2-(2-oxopyrrolidin-1-yl)ethoxy]acetyl]pyrrolidin-3-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one —— C22H31N5O4
    2-tert-butyl-5-[(3S)-1-[2-[2-(2-oxopyrrolidin-1-yl)ethoxy]acetyl]pyrrolidin-3-yl]-1H-pyrazolo[1,5-a]pyrimidin-7-one
    —— N-[(2-tert-butyl-7-oxo-1H-pyrazolo[1,5-a]pyrimidin-5-yl)methyl]-2-[(3S)-1,1-dioxothiolan-3-yl]acetamide —— C17H24N4O4S
    N-[(2-tert-butyl-7-oxo-1H-pyrazolo[1,5-a]pyrimidin-5-yl)methyl]-2-[(3S)-1,1-dioxothiolan-3-yl]acetamide
    —— [4-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-4-ylmethanone —— C22H28F3N5O
    [4-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-4-ylmethanone
    —— 1-[4-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-[(2R)-oxolan-2-yl]ethanone —— C22H33F3N4O2
    1-[4-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-[(2R)-oxolan-2-yl]ethanone
    —— 1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-[(1S)-cyclopent-2-en-1-yl]ethanone —— C23H34F2N4O
    1-[4-[(5S,7R)-2-tert-butyl-7-(difluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-[(1S)-cyclopent-2-en-1-yl]ethanone
    —— 1-[(3R)-3-[(5R,7S)-5-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]-2-methylpropan-1-one —— C19H29F3N4O
    1-[(3R)-3-[(5R,7S)-5-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]pyrrolidin-1-yl]-2-methylpropan-1-one
    —— [(3S)-3-[2-tert-butyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-2-ylmethanone —— C22H24F3N5O
    [(3S)-3-[2-tert-butyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-pyridin-2-ylmethanone
    —— 1-[(3S)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-methoxyethanone —— C19H29F3N4O2
    1-[(3S)-3-[(5S,7R)-2-tert-butyl-7-(trifluoromethyl)-1,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-5-yl]piperidin-1-yl]-2-methoxyethanone