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 吡啶及其衍生物

    吡啶及其衍生物

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— N-{5-[(2-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(5-fluoropyridin-2-yl)acetamide 1402440-78-1 C22H20FN7O2
    N-{5-[(2-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(5-fluoropyridin-2-yl)acetamide
    —— 3-[2-[(4aS,7aS)-4-methyl-3-oxo-2,4a,5,6,7,7a-hexahydrocyclopenta[b]pyrazin-1-yl]-4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C29H35ClN8O3
    3-[2-[(4aS,7aS)-4-methyl-3-oxo-2,4a,5,6,7,7a-hexahydrocyclopenta[b]pyrazin-1-yl]-4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 2-[4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-[(3R)-3-phenylmorpholin-4-yl]imidazo[4,5-c]pyridin-6-yl]-2,3-dihydro-1H-pyridin-6-one —— C34H37ClN6O2
    2-[4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-[(3R)-3-phenylmorpholin-4-yl]imidazo[4,5-c]pyridin-6-yl]-2,3-dihydro-1H-pyridin-6-one
    —— 2-methyl-2H-pyrazole-3-carboxylic acid [5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]amide 1402442-45-8 C20H19N7O2
    2-methyl-2H-pyrazole-3-carboxylic acid [5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]amide
    —— 2-(2,3-dihydro-1-benzofuran-5-yl)-N-{5-[(7-methyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}acetamide 1402440-24-7 C23H19N5O3
    2-(2,3-dihydro-1-benzofuran-5-yl)-N-{5-[(7-methyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}acetamide
    —— 3-[4-(5-Chloropyridin-3-yl)-2-[2-(2-methylbutan-2-yl)pyrrolidin-1-yl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C30H40ClN7O2
    3-[4-(5-Chloropyridin-3-yl)-2-[2-(2-methylbutan-2-yl)pyrrolidin-1-yl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-tetrazolo[1,5-b]pyridazin-6-ylacetamide 1402439-92-2 C21H18N10O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-tetrazolo[1,5-b]pyridazin-6-ylacetamide
    —— 6-chloro-N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]imidazo[1,2-b]pyridazine-2-carboxamide —— C22H17ClN8O2
    6-chloro-N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]imidazo[1,2-b]pyridazine-2-carboxamide
    —— 3-[4-(5-Chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-[2-(1-methyltriazol-4-yl)pyrrolidin-1-yl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C28H33ClN10O2
    3-[4-(5-Chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-[2-(1-methyltriazol-4-yl)pyrrolidin-1-yl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 3-[4-(5-Chloropyridin-3-yl)-2-[2-(1-methoxyethyl)pyrrolidin-1-yl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C28H36ClN7O3
    3-[4-(5-Chloropyridin-3-yl)-2-[2-(1-methoxyethyl)pyrrolidin-1-yl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 3-(3-chlorophenyl)-N-{5-[(7-methyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}propanamide 1402441-73-9 C22H18ClN5O2
    3-(3-chlorophenyl)-N-{5-[(7-methyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}propanamide
    —— 5-(methoxymethyl)-1-methyl-N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]pyrazole-3-carboxamide —— C22H23N7O3
    5-(methoxymethyl)-1-methyl-N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]pyrazole-3-carboxamide
    —— 3-[4-(5-Chloropyridin-3-yl)-2-(2,5-dimethylmorpholin-4-yl)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C27H34ClN7O3
    3-[4-(5-Chloropyridin-3-yl)-2-(2,5-dimethylmorpholin-4-yl)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 2-(2-chloroimidazo[2,1-b]thiazol-6-yl)-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]acetamide 1402442-17-4 C22H18ClN7O2S
    2-(2-chloroimidazo[2,1-b]thiazol-6-yl)-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]acetamide
    —— 3-[4-(5-Chloropyridin-3-yl)-2-[ethoxy(phenyl)methyl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C30H33ClN6O3
    3-[4-(5-Chloropyridin-3-yl)-2-[ethoxy(phenyl)methyl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 1-cyclobutyl-N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]imidazole-4-carboxamide —— C23H23N7O2
    1-cyclobutyl-N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]imidazole-4-carboxamide
    —— N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxamide —— C22H21N7O2
    N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxamide
    —— N-ethyl-6-[[3-(5-fluoropiperidin-2-yl)-1,2-oxazol-4-yl]methoxy]pyridine-3-carboxamide —— C17H21FN4O3
    N-ethyl-6-[[3-(5-fluoropiperidin-2-yl)-1,2-oxazol-4-yl]methoxy]pyridine-3-carboxamide
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-[4-(trifluoromethyl)-1H-1,2,3-triazol-1-yl]acetamide 1402439-40-0 C20H17F3N8O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-[4-(trifluoromethyl)-1H-1,2,3-triazol-1-yl]acetamide
    —— N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]furo[2,3-b]pyridine-5-carboxamide —— C23H18N6O3
    N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]furo[2,3-b]pyridine-5-carboxamide
    —— 3-[4-(5-chloropyridin-3-yl)-2-[(2S,4R)-4-methoxy-2-(methoxymethyl)pyrrolidin-1-yl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C28H36ClN7O4
    3-[4-(5-chloropyridin-3-yl)-2-[(2S,4R)-4-methoxy-2-(methoxymethyl)pyrrolidin-1-yl]-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 3-[4-(5-Chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-(2-oxa-5-azabicyclo[4.1.0]heptan-5-yl)imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C26H30ClN7O3
    3-[4-(5-Chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-(2-oxa-5-azabicyclo[4.1.0]heptan-5-yl)imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]pyridine-4-carboxamide —— C21H18N6O2
    N-[5-(7-propan-2-ylpyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]pyridine-4-carboxamide
    —— 2-(5-isopropylpyrazol-1-yl)-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]acetamide 1402442-12-9 C23H25N7O2
    2-(5-isopropylpyrazol-1-yl)-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]acetamide
    —— N-{5-[(2-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-[4-(trifluoromethyl)-1H-1,2,3-triazol-1-yl]acetamide 1402440-75-8 C20H18F3N9O2
    N-{5-[(2-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-[4-(trifluoromethyl)-1H-1,2,3-triazol-1-yl]acetamide
    —— (R)-Chlorpheniramine Maleate Salt —— C20H23ClN2O4
    (R)-Chlorpheniramine Maleate Salt
    —— (Z)-4-(1-methylpyridin-1-ium-4-yl)but-3-en-2-ol;iodide —— C10H14INO
    (Z)-4-(1-methylpyridin-1-ium-4-yl)but-3-en-2-ol;iodide
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(3-methyl-1H-pyrazol-1-yl)acetamide 1402439-47-7 C21H21N7O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(3-methyl-1H-pyrazol-1-yl)acetamide
    —— 2-imidazo[2,1-b]thiazol-6-yl-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]acetamide 1402442-06-1 C22H19N7O2S
    2-imidazo[2,1-b]thiazol-6-yl-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]acetamide
    —— N-[5-({7-[(1R)-2-hydroxy-1-methylethyl]-7H-pyrrolo[2,3-d]pyrimidin-5-yl}carbonyl)pyridin-3-yl]-2-(4-isopropyl-1H-1,2,3-triazol-1-yl)acetamide 1402440-41-8 C22H24N8O3
    N-[5-({7-[(1R)-2-hydroxy-1-methylethyl]-7H-pyrrolo[2,3-d]pyrimidin-5-yl}carbonyl)pyridin-3-yl]-2-(4-isopropyl-1H-1,2,3-triazol-1-yl)acetamide
    —— N-(2-hydroxyethyl)-6-[(5-methyl-3-piperidin-2-yl-1,2-oxazol-4-yl)methoxy]pyridine-3-carboxamide —— C18H24N4O4
    N-(2-hydroxyethyl)-6-[(5-methyl-3-piperidin-2-yl-1,2-oxazol-4-yl)methoxy]pyridine-3-carboxamide
    —— N-[5-[2-amino-7-(1-methoxy-2-methylpropan-2-yl)pyrrolo[2,3-d]pyrimidine-5-carbonyl]pyridin-3-yl]-2-(4-cyclopropyltriazol-1-yl)acetamide —— C24H27N9O3
    N-[5-[2-amino-7-(1-methoxy-2-methylpropan-2-yl)pyrrolo[2,3-d]pyrimidine-5-carbonyl]pyridin-3-yl]-2-(4-cyclopropyltriazol-1-yl)acetamide
    —— (3R)-2-(4-methoxyphenyl)-3-(3-pyridin-2-ylphenyl)-3,5-dihydro-1H-pyrimido[1,6-a]benzimidazol-4-ol —— C28H24N4O2
    (3R)-2-(4-methoxyphenyl)-3-(3-pyridin-2-ylphenyl)-3,5-dihydro-1H-pyrimido[1,6-a]benzimidazol-4-ol
    —— furo[3,2-c]pyridine-4-carboxylic acid [5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]amide 1402442-25-4 C23H18N6O3
    furo[3,2-c]pyridine-4-carboxylic acid [5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)pyridin-3-yl]amide
    —— 1-[1-(benzimidazol-2-ylidene)ethylamino]-2-[(E)-(3-fluorophenyl)methylideneamino]-4-(4-nitrophenyl)-6-oxopyridine-3,5-dicarbonitrile —— C29H17FN8O3
    1-[1-(benzimidazol-2-ylidene)ethylamino]-2-[(E)-(3-fluorophenyl)methylideneamino]-4-(4-nitrophenyl)-6-oxopyridine-3,5-dicarbonitrile
    —— (E)-4-(1-methylpyridin-1-ium-4-yl)but-3-en-2-ol —— C10H14NO+
    (E)-4-(1-methylpyridin-1-ium-4-yl)but-3-en-2-ol
    —— 3-[7-bromo-4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-[(3R)-3-phenylmorpholin-4-yl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C31H33BrClN7O3
    3-[7-bromo-4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]-2-[(3R)-3-phenylmorpholin-4-yl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetamide 1402439-30-8 C22H20F3N7O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetamide
    —— 2-(3-isopropyl-5-methyl-1H-pyrazol-1-yl)-N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}acetamide 1402439-38-6 C24H27N7O2
    2-(3-isopropyl-5-methyl-1H-pyrazol-1-yl)-N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}acetamide
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(7-methylimidazo[1,2-a]pyrimidin-2-yl)acetamide 1402439-55-7 C24H22N8O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(7-methylimidazo[1,2-a]pyrimidin-2-yl)acetamide
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(4-methyl-1H-1,2,3-triazol-1-yl)acetamide 1402439-97-7 C20H20N8O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(4-methyl-1H-1,2,3-triazol-1-yl)acetamide
    —— N-[5-({7-[2-hydroxy-1-(hydroxymethyl)-1-methylethyl]-7H-pyrrolo[2,3-d]pyrimidin-5-yl}carbonyl)pyridin-3-yl]-2-[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetamide 1402440-69-0 C23H22F3N7O4
    N-[5-({7-[2-hydroxy-1-(hydroxymethyl)-1-methylethyl]-7H-pyrrolo[2,3-d]pyrimidin-5-yl}carbonyl)pyridin-3-yl]-2-[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetamide
    —— N-(5-{[7-(3-methyloxetan-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl]carbonyl}pyridin-3-yl)-2-[4-(trifluoromethyl)-1H-1,2,3-triazol-1-yl]acetamide 1402441-62-6 C21H17F3N8O3
    N-(5-{[7-(3-methyloxetan-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl]carbonyl}pyridin-3-yl)-2-[4-(trifluoromethyl)-1H-1,2,3-triazol-1-yl]acetamide
    —— 3-[2-(2-Tert-butylpyrrolidin-1-yl)-4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C29H38ClN7O2
    3-[2-(2-Tert-butylpyrrolidin-1-yl)-4-(5-chloropyridin-3-yl)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(6-methylpyridin-3-yl)acetamide 1402439-89-7 C23H22N6O2
    N-{5-[(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(6-methylpyridin-3-yl)acetamide
    —— N-{5-[(2-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(5-chloropyridin-2-yl)acetamide 1402440-77-0 C22H20ClN7O2
    N-{5-[(2-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)carbonyl]pyridin-3-yl}-2-(5-chloropyridin-2-yl)acetamide
    —— 3-[4-(5-chloropyridin-3-yl)-2-(N-methylanilino)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one —— C28H30ClN7O2
    3-[4-(5-chloropyridin-3-yl)-2-(N-methylanilino)-3-[(4-methylcyclohexyl)methyl]imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazolidin-5-one
    —— 1-[1-(benzimidazol-2-ylidene)ethylamino]-2-[(E)-(4-chlorophenyl)methylideneamino]-4-(4-nitrophenyl)-6-oxopyridine-3,5-dicarbonitrile —— C29H17ClN8O3
    1-[1-(benzimidazol-2-ylidene)ethylamino]-2-[(E)-(4-chlorophenyl)methylideneamino]-4-(4-nitrophenyl)-6-oxopyridine-3,5-dicarbonitrile
    —— 1-[1-(benzimidazol-2-ylidene)ethylamino]-4-(4-nitrophenyl)-2-oxo-6-[(4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]pyridine-3,5-dicarbonitrile —— C29H18N8O4
    1-[1-(benzimidazol-2-ylidene)ethylamino]-4-(4-nitrophenyl)-2-oxo-6-[(4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]pyridine-3,5-dicarbonitrile
    —— 3-amino-N-[(Z)-(4-fluorophenyl)methylideneamino]-4-(furan-2-yl)-6-phenylfuro[2,3-b]pyridine-2-carboxamide —— C25H17FN4O3
    3-amino-N-[(Z)-(4-fluorophenyl)methylideneamino]-4-(furan-2-yl)-6-phenylfuro[2,3-b]pyridine-2-carboxamide