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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 吡喃嘧啶类

    吡喃嘧啶类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— (9R)-13-(furan-2-yl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C25H22N4O4
    (9R)-13-(furan-2-yl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (5S)-4-amino-8,8-dimethyl-3-(2-methylpropyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C23H28N3O2+
    (5S)-4-amino-8,8-dimethyl-3-(2-methylpropyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (6aS,9S,10aR)-6,6,9-trimethyl-2-phenyl-6a,7,8,9,10,10a-hexahydro-4H-isochromeno[3,4-d]pyrimidine-1,3-dione —— C20H24N2O3
    (6aS,9S,10aR)-6,6,9-trimethyl-2-phenyl-6a,7,8,9,10,10a-hexahydro-4H-isochromeno[3,4-d]pyrimidine-1,3-dione
    —— (9S)-13-(furan-2-yl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C25H22N4O4
    (9S)-13-(furan-2-yl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (2S)-2-[(7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl)sulfanyl]-1-piperidin-1-ylpropan-1-one —— C23H29N3O2S
    (2S)-2-[(7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl)sulfanyl]-1-piperidin-1-ylpropan-1-one
    —— (2R)-2-[(7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl)sulfanyl]-1-piperidin-1-ylpropan-1-one —— C23H29N3O2S
    (2R)-2-[(7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl)sulfanyl]-1-piperidin-1-ylpropan-1-one
    —— ethyl (3R)-7'-amino-3'-benzyl-2,2',4'-trioxospiro[1H-indole-3,5'-1H-pyrano[2,3-d]pyrimidine]-6'-carboxylate —— C24H20N4O6
    ethyl (3R)-7'-amino-3'-benzyl-2,2',4'-trioxospiro[1H-indole-3,5'-1H-pyrano[2,3-d]pyrimidine]-6'-carboxylate
    —— (5R)-4-amino-8,8-dimethyl-3-(2-morpholin-4-ium-4-ylethyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C25H32N4O3+2
    (5R)-4-amino-8,8-dimethyl-3-(2-morpholin-4-ium-4-ylethyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (9S)-9-(4-methoxyphenyl)-5,5-dimethyl-13-naphthalen-1-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C31H26N4O3
    (9S)-9-(4-methoxyphenyl)-5,5-dimethyl-13-naphthalen-1-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (5R)-4-amino-8,8-dimethyl-3-(2-morpholin-4-ylethyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C25H31N4O3+
    (5R)-4-amino-8,8-dimethyl-3-(2-morpholin-4-ylethyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (9R)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O3
    (9R)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9R)-9-(4-methoxyphenyl)-5,5-dimethyl-13-naphthalen-1-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C31H26N4O3
    (9R)-9-(4-methoxyphenyl)-5,5-dimethyl-13-naphthalen-1-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (5S)-4-amino-8,8-dimethyl-3-(2-morpholin-4-ylethyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C25H31N4O3+
    (5S)-4-amino-8,8-dimethyl-3-(2-morpholin-4-ylethyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (9S)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O3
    (9S)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— 4-(2,2-Dimethoxyethylsulfanyl)-7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidine —— C19H24N2O3S
    4-(2,2-Dimethoxyethylsulfanyl)-7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidine
    —— N'-(7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl)furan-2-carbohydrazide 845628-84-4 C20H20N4O3
    N'-(7,7-dimethyl-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl)furan-2-carbohydrazide
    —— 1-(3-ethoxypropyl)-7,7-dimethyl-2-phenyl-1,5,7,8-tetrahydro-4H-pyrano[4,3-d]pyrimidine-4-thione —— C20H26N2O2S
    1-(3-ethoxypropyl)-7,7-dimethyl-2-phenyl-1,5,7,8-tetrahydro-4H-pyrano[4,3-d]pyrimidine-4-thione
    —— (9S)-13-[(2,6-dimethylphenoxy)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O3
    (9S)-13-[(2,6-dimethylphenoxy)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— 1-(3-methoxyphenyl)-7,7-dimethyl-2-(4-methylphenyl)-1,5,7,8-tetrahydro-4H-pyrano[4,3-d]pyrimidine-4-thione —— C23H24N2O2S
    1-(3-methoxyphenyl)-7,7-dimethyl-2-(4-methylphenyl)-1,5,7,8-tetrahydro-4H-pyrano[4,3-d]pyrimidine-4-thione
    —— 7,7-Dimethyl-2-phenyl-1-pyridin-3-ylmethyl-1,5,7,8-tetrahydro-pyrano[4,3-d]pyrimidine-4-thione —— C21H21N3OS
    7,7-Dimethyl-2-phenyl-1-pyridin-3-ylmethyl-1,5,7,8-tetrahydro-pyrano[4,3-d]pyrimidine-4-thione
    —— (5S)-4-amino-3-butyl-5-(4-methoxyphenyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C24H30N3O3+
    (5S)-4-amino-3-butyl-5-(4-methoxyphenyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (5R)-4-amino-3-butyl-5-(4-methoxyphenyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C24H30N3O3+
    (5R)-4-amino-3-butyl-5-(4-methoxyphenyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (9R)-13-[(2-methoxyphenoxy)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O4
    (9R)-13-[(2-methoxyphenoxy)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9S)-5,5-dimethyl-13-(phenoxymethyl)-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C27H24N4O3
    (9S)-5,5-dimethyl-13-(phenoxymethyl)-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9S)-13-[(2-methoxyphenoxy)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O4
    (9S)-13-[(2-methoxyphenoxy)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9R)-5,5-dimethyl-13-(phenoxymethyl)-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C27H24N4O3
    (9R)-5,5-dimethyl-13-(phenoxymethyl)-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— 2-[7,7-Dimethyl-2-(4-methylphenyl)-4-sulfanylidene-5,8-dihydropyrano[4,3-d]pyrimidin-1-yl]ethyl-diethylazanium —— C22H32N3OS+
    2-[7,7-Dimethyl-2-(4-methylphenyl)-4-sulfanylidene-5,8-dihydropyrano[4,3-d]pyrimidin-1-yl]ethyl-diethylazanium
    —— 1-[2-(Diethylamino)ethyl]-7,7-dimethyl-2-(4-methylphenyl)-5,8-dihydropyrano[4,3-d]pyrimidine-4-thione —— C22H31N3OS
    1-[2-(Diethylamino)ethyl]-7,7-dimethyl-2-(4-methylphenyl)-5,8-dihydropyrano[4,3-d]pyrimidine-4-thione
    —— 2-(7,7-Dimethyl-2-phenyl-4-sulfanylidene-5,8-dihydropyrano[4,3-d]pyrimidin-1-yl)ethyl benzoate —— C24H24N2O3S
    2-(7,7-Dimethyl-2-phenyl-4-sulfanylidene-5,8-dihydropyrano[4,3-d]pyrimidin-1-yl)ethyl benzoate
    —— (9R)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C30H30N4O5
    (9R)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (5R)-4-amino-8,8-dimethyl-3-(3-morpholin-4-ylpropyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C26H33N4O3+
    (5R)-4-amino-8,8-dimethyl-3-(3-morpholin-4-ylpropyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (5R)-4-amino-8,8-dimethyl-3-(3-morpholin-4-ium-4-ylpropyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C26H34N4O3+2
    (5R)-4-amino-8,8-dimethyl-3-(3-morpholin-4-ium-4-ylpropyl)-5-phenyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (9S)-13-(1,3-benzoxazol-2-ylsulfanylmethyl)-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H23N5O3S
    (9S)-13-(1,3-benzoxazol-2-ylsulfanylmethyl)-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9R)-13-(1,3-benzoxazol-2-ylsulfanylmethyl)-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H23N5O3S
    (9R)-13-(1,3-benzoxazol-2-ylsulfanylmethyl)-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9S)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C30H30N4O5
    (9S)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (5S)-4-amino-3-(furan-2-ylmethyl)-5-(4-methoxyphenyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C25H26N3O4+
    (5S)-4-amino-3-(furan-2-ylmethyl)-5-(4-methoxyphenyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (9S)-9-(4-methoxyphenyl)-5,5-dimethyl-13-(phenoxymethyl)-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O4
    (9S)-9-(4-methoxyphenyl)-5,5-dimethyl-13-(phenoxymethyl)-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9R)-13-[(2,6-dimethylphenoxy)methyl]-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C30H30N4O4
    (9R)-13-[(2,6-dimethylphenoxy)methyl]-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9S)-13-[(2,6-dimethylphenoxy)methyl]-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C30H30N4O4
    (9S)-13-[(2,6-dimethylphenoxy)methyl]-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9S)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C26H24N4O4S
    (9S)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9R)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C26H24N4O4S
    (9R)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9S)-13-benzyl-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O4
    (9S)-13-benzyl-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— (9R)-13-benzyl-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O4
    (9R)-13-benzyl-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
    —— 7,7-Dimethyl-1-(3-morpholin-4-ium-4-ylpropyl)-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidine-4-thione —— C22H30N3O2S+
    7,7-Dimethyl-1-(3-morpholin-4-ium-4-ylpropyl)-2-phenyl-5,8-dihydropyrano[4,3-d]pyrimidine-4-thione
    —— (5R)-4-amino-5-(3,4-dimethoxyphenyl)-8,8-dimethyl-3-(3-morpholin-4-ium-4-ylpropyl)-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C28H38N4O5+2
    (5R)-4-amino-5-(3,4-dimethoxyphenyl)-8,8-dimethyl-3-(3-morpholin-4-ium-4-ylpropyl)-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (5S)-4-amino-5-(3,4-dimethoxyphenyl)-8,8-dimethyl-3-(3-morpholin-4-ium-4-ylpropyl)-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C28H38N4O5+2
    (5S)-4-amino-5-(3,4-dimethoxyphenyl)-8,8-dimethyl-3-(3-morpholin-4-ium-4-ylpropyl)-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (5R)-4-amino-5-(3,4-dimethoxyphenyl)-8,8-dimethyl-3-(3-morpholin-4-ylpropyl)-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C28H37N4O5+
    (5R)-4-amino-5-(3,4-dimethoxyphenyl)-8,8-dimethyl-3-(3-morpholin-4-ylpropyl)-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one
    —— (3R)-7'-amino-3'-benzyl-5-bromo-2,2',4'-trioxospiro[1H-indole-3,5'-1H-pyrano[2,3-d]pyrimidine]-6'-carbonitrile —— C22H14BrN5O4
    (3R)-7'-amino-3'-benzyl-5-bromo-2,2',4'-trioxospiro[1H-indole-3,5'-1H-pyrano[2,3-d]pyrimidine]-6'-carbonitrile
    —— (3S)-7'-amino-3'-benzyl-5-bromo-2,2',4'-trioxospiro[1H-indole-3,5'-1H-pyrano[2,3-d]pyrimidine]-6'-carbonitrile —— C22H14BrN5O4
    (3S)-7'-amino-3'-benzyl-5-bromo-2,2',4'-trioxospiro[1H-indole-3,5'-1H-pyrano[2,3-d]pyrimidine]-6'-carbonitrile
    —— (5S)-4-amino-5-(3,4-dimethoxyphenyl)-3-(2-hydroxyethyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one —— C23H28N3O5+
    (5S)-4-amino-5-(3,4-dimethoxyphenyl)-3-(2-hydroxyethyl)-8,8-dimethyl-7,9-dihydro-5H-chromeno[2,3-d]pyrimidin-3-ium-6-one