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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 吡喃吡啶类

    吡喃吡啶类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 2-amino-4-(2,4-dimethoxyphenyl)-7-methyl-5-oxo-6-(pyridin-3-ylmethyl)-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C24H22N4O4
    2-amino-4-(2,4-dimethoxyphenyl)-7-methyl-5-oxo-6-(pyridin-3-ylmethyl)-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— 2-amino-4-(3,4-dimethoxyphenyl)-6-[2-(3,4-dimethoxyphenyl)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C28H29N3O6
    2-amino-4-(3,4-dimethoxyphenyl)-6-[2-(3,4-dimethoxyphenyl)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— N-(3-methoxypropyl)-2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C23H31N5O3S2
    N-(3-methoxypropyl)-2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— 3-(2,6-dichlorobenzyl)-8,8-dimethyl-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-one —— C21H17Cl2N3O2S
    3-(2,6-dichlorobenzyl)-8,8-dimethyl-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-one
    —— methyl 2-amino-4-(3-chlorophenyl)-6-[2-(3,4-dimethoxyphenyl)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate —— C27H27ClN2O6
    methyl 2-amino-4-(3-chlorophenyl)-6-[2-(3,4-dimethoxyphenyl)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate
    —— Methyl 5-{[(2,2-dimethyl-5-morpholino-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidin-8-YL)sulfanyl]methyl}-2-furoate —— C25H26N4O5S2
    Methyl 5-{[(2,2-dimethyl-5-morpholino-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidin-8-YL)sulfanyl]methyl}-2-furoate
    —— 4,4-Dimethyl-8-morpholin-4-yl-13-(5-phenylhex-2-enylsulfanyl)-5-oxa-11-thia-9,14,16-triazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2(7),8,12(17),13,15-hexaene —— C30H34N4O2S2
    4,4-Dimethyl-8-morpholin-4-yl-13-(5-phenylhex-2-enylsulfanyl)-5-oxa-11-thia-9,14,16-triazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2(7),8,12(17),13,15-hexaene
    —— 6-[(2-cyanoethyl)sulfanyl]-3,3-dimethyl-8-(pyrrolidin-1-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile —— C18H22N4OS
    6-[(2-cyanoethyl)sulfanyl]-3,3-dimethyl-8-(pyrrolidin-1-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile
    —— 2-{[2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}ethanol —— C21H26N4O3S3
    2-{[2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}ethanol
    —— N-(2-methoxyethyl)-2,2-dimethyl-5-(pyrrolidin-1-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C21H27N5O2S
    N-(2-methoxyethyl)-2,2-dimethyl-5-(pyrrolidin-1-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— N-(2-Pyridinyl)-2-[(2,2,5-trimethyl-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidin-8-YL)sulfanyl]acetamide —— C22H21N5O2S2
    N-(2-Pyridinyl)-2-[(2,2,5-trimethyl-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidin-8-YL)sulfanyl]acetamide
    —— 2-amino-4-(1,3-benzodioxol-5-yl)-6-[3-(diethylamino)propyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C24H28N4O4
    2-amino-4-(1,3-benzodioxol-5-yl)-6-[3-(diethylamino)propyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— 5-Isopropyl-2,2-dimethyl-8-(4-methylpiperidino)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidine —— C23H30N4OS
    5-Isopropyl-2,2-dimethyl-8-(4-methylpiperidino)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidine
    —— 2,2-dimethyl-N-(3-methylbutyl)-5-(2-methylpropyl)-10-(methylsulfanyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C24H34N4OS2
    2,2-dimethyl-N-(3-methylbutyl)-5-(2-methylpropyl)-10-(methylsulfanyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— N-(3-methoxyphenyl)-2-(2,8,8-trimethyl-4-oxo-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-3(4H)-yl)acetamide —— C24H24N4O4S
    N-(3-methoxyphenyl)-2-(2,8,8-trimethyl-4-oxo-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-3(4H)-yl)acetamide
    —— 8,8-dimethyl-N-[4-(propan-2-yloxy)benzyl]-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4-amine —— C24H26N4O2S
    8,8-dimethyl-N-[4-(propan-2-yloxy)benzyl]-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4-amine
    —— ethyl 2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}-3-oxobutanoate —— C24H28N4O5S2
    ethyl 2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}-3-oxobutanoate
    —— 8,8-dimethyl-3-octadecyl-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-one —— C32H49N3O2S
    8,8-dimethyl-3-octadecyl-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-one
    —— 6-(methylsulfanyl)-8-(morpholin-4-yl)-3-(propan-2-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile —— C17H23N3O2S
    6-(methylsulfanyl)-8-(morpholin-4-yl)-3-(propan-2-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile
    —— 5-Butyl-2,2-dimethyl-8-(1-pyrrolidinyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidine —— C22H28N4OS
    5-Butyl-2,2-dimethyl-8-(1-pyrrolidinyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidine
    —— 2-Chloro-7-propyl-7,8-dihydro-5H-pyrano[4,3-b]pyridine-3-carbonitrile —— C12H13ClN2O
    2-Chloro-7-propyl-7,8-dihydro-5H-pyrano[4,3-b]pyridine-3-carbonitrile
    —— N-benzyl-2-ethyl-2-methyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C26H29N5O2S
    N-benzyl-2-ethyl-2-methyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— methyl 2-amino-4-(4-chlorophenyl)-6-[2-(3,4-dimethoxyphenyl)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate —— C27H27ClN2O6
    methyl 2-amino-4-(4-chlorophenyl)-6-[2-(3,4-dimethoxyphenyl)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate
    —— 2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}-N-(4-methylphenyl)acetamide —— C27H29N5O3S2
    2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}-N-(4-methylphenyl)acetamide
    —— [1-amino-8,8-dimethyl-5-(morpholin-4-yl)-8,9-dihydro-6H-pyrano[4,3-d]thieno[2,3-b]pyridin-2-yl](pyrrolidin-1-yl)methanone —— C21H28N4O3S
    [1-amino-8,8-dimethyl-5-(morpholin-4-yl)-8,9-dihydro-6H-pyrano[4,3-d]thieno[2,3-b]pyridin-2-yl](pyrrolidin-1-yl)methanone
    —— 2,2-dimethyl-N,5-bis(2-methylpropyl)-10-(methylsulfanyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C23H32N4OS2
    2,2-dimethyl-N,5-bis(2-methylpropyl)-10-(methylsulfanyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— 2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d][1,2,3]triazin-8-yl]amino}ethanol —— C19H24N6O3S
    2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d][1,2,3]triazin-8-yl]amino}ethanol
    —— 6-(dibutylamino)-3,3-dimethyl-8-(propan-2-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile —— C22H35N3O
    6-(dibutylamino)-3,3-dimethyl-8-(propan-2-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile
    —— 2-amino-6-benzyl-4-(3,4-diethoxyphenyl)-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C27H27N3O4
    2-amino-6-benzyl-4-(3,4-diethoxyphenyl)-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— 2-amino-4-(2,4-dimethoxyphenyl)-6-[2-(dimethylamino)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C22H26N4O4
    2-amino-4-(2,4-dimethoxyphenyl)-6-[2-(dimethylamino)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— 2-amino-4-(2,4-dichlorophenyl)-6-[2-(dimethylamino)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C20H20Cl2N4O2
    2-amino-4-(2,4-dichlorophenyl)-6-[2-(dimethylamino)ethyl]-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— N-[(3aR,7aR)-3a,7a-dihydro-1,3-benzodioxol-5-yl]-5-(hydroxymethyl)-2-imino-8-methylpyrano[2,3-c]pyridine-3-carboxamide —— C18H17N3O5
    N-[(3aR,7aR)-3a,7a-dihydro-1,3-benzodioxol-5-yl]-5-(hydroxymethyl)-2-imino-8-methylpyrano[2,3-c]pyridine-3-carboxamide
    —— 2-amino-7-methyl-5-oxo-6-(pyridin-3-ylmethyl)-4-(2,3,4-trimethoxyphenyl)-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C25H24N4O5
    2-amino-7-methyl-5-oxo-6-(pyridin-3-ylmethyl)-4-(2,3,4-trimethoxyphenyl)-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— N-[(3aS,7aR)-3a,7a-dihydro-1,3-benzodioxol-5-yl]-5-(hydroxymethyl)-2-imino-8-methylpyrano[2,3-c]pyridine-3-carboxamide —— C18H17N3O5
    N-[(3aS,7aR)-3a,7a-dihydro-1,3-benzodioxol-5-yl]-5-(hydroxymethyl)-2-imino-8-methylpyrano[2,3-c]pyridine-3-carboxamide
    —— 2,2-dimethyl-5-(morpholin-4-yl)-N-(pyridin-2-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C23H24N6O2S
    2,2-dimethyl-5-(morpholin-4-yl)-N-(pyridin-2-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— 2,2-dimethyl-5-(pyrrolidin-1-yl)-N-(tetrahydrofuran-2-ylmethyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C23H29N5O2S
    2,2-dimethyl-5-(pyrrolidin-1-yl)-N-(tetrahydrofuran-2-ylmethyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— S-[5-cyano-3,3-dimethyl-8-(morpholin-4-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridin-6-yl] benzenecarbothioate —— C22H23N3O3S
    S-[5-cyano-3,3-dimethyl-8-(morpholin-4-yl)-3,4-dihydro-1H-pyrano[3,4-c]pyridin-6-yl] benzenecarbothioate
    —— 8,8-dimethyl-4-(prop-2-en-1-yloxy)-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidine —— C17H17N3O2S
    8,8-dimethyl-4-(prop-2-en-1-yloxy)-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]thieno[3,2-d]pyrimidine
    —— N-Butyl-N-[2,2-dimethyl-5-(1-pyrrolidinyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidin-8-YL]amine —— C22H29N5OS
    N-Butyl-N-[2,2-dimethyl-5-(1-pyrrolidinyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-D]pyrimidin-8-YL]amine
    —— 8-[(2,4-dichlorobenzyl)sulfanyl]-5-(furan-2-yl)-2,2-dimethyl-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidine —— C25H19Cl2N3O2S2
    8-[(2,4-dichlorobenzyl)sulfanyl]-5-(furan-2-yl)-2,2-dimethyl-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidine
    —— 2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}-N-(1,3-thiazol-2-yl)acetamide —— C23H24N6O3S3
    2-{[2,2-dimethyl-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]sulfanyl}-N-(1,3-thiazol-2-yl)acetamide
    —— N'-[2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]-N,N-dimethylpropane-1,3-diamine —— C24H34N6O2S2
    N'-[2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]-N,N-dimethylpropane-1,3-diamine
    —— 2,2'-{[2,2-dimethyl-10-(methylsulfanyl)-5-(propan-2-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]imino}diethanol —— C22H30N4O3S2
    2,2'-{[2,2-dimethyl-10-(methylsulfanyl)-5-(propan-2-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-yl]imino}diethanol
    —— N-(2-methoxyethyl)-2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C22H29N5O3S2
    N-(2-methoxyethyl)-2,2-dimethyl-10-(methylsulfanyl)-5-(morpholin-4-yl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— 2-amino-6-(2-(dimethylamino)ethyl)-7-methyl-5-oxo-4-(3,4,5-trimethoxyphenyl)-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C23H28N4O5
    2-amino-6-(2-(dimethylamino)ethyl)-7-methyl-5-oxo-4-(3,4,5-trimethoxyphenyl)-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— 2-amino-4-(3-fluorophenyl)-7-methyl-6-(2-morpholinoethyl)-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile —— C22H23FN4O3
    2-amino-4-(3-fluorophenyl)-7-methyl-6-(2-morpholinoethyl)-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carbonitrile
    —— N-(3-ethoxypropyl)-2,2-dimethyl-5-(2-methylpropyl)-10-(methylsulfanyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine —— C24H34N4O2S2
    N-(3-ethoxypropyl)-2,2-dimethyl-5-(2-methylpropyl)-10-(methylsulfanyl)-1,4-dihydro-2H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-8-amine
    —— (2R)-6-chloro-2-(4-chlorophenyl)-3,4-dihydro-2H-pyrano[2,3-b]pyridine —— C14H11Cl2NO
    (2R)-6-chloro-2-(4-chlorophenyl)-3,4-dihydro-2H-pyrano[2,3-b]pyridine
    —— (2R)-6-chloro-2-(3,4-dichlorophenyl)-2-methyl-3,4-dihydropyrano[2,3-b]pyridine —— C15H12Cl3NO
    (2R)-6-chloro-2-(3,4-dichlorophenyl)-2-methyl-3,4-dihydropyrano[2,3-b]pyridine
    —— (2S)-6-chloro-2-(4-chlorophenyl)-3,4-dihydro-2H-pyrano[2,3-b]pyridine —— C14H11Cl2NO
    (2S)-6-chloro-2-(4-chlorophenyl)-3,4-dihydro-2H-pyrano[2,3-b]pyridine