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【结 构 式】

【分子编号】39530

【品名】(E)-2-[3-(ethoxycarbonyl)-6-methyl-4-oxo-7,8-dihydro-4H-pyrido[1,2-a]pyrimidin-9(6H)-ylidene]acetic acid

【CA登记号】

【 分 子 式 】C14H16N2O5

【 分 子 量 】292.29152

【元素组成】C 57.53% H 5.52% N 9.58% O 27.37%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(IIIb)

The reaction of 3-ethoxycarbonyl-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido [1,2-a]pyrimidine (I) with glyoxilic acid (II) in ethanolic HCl gives 3-ethoxycarbonyl-6-methyl-4-oxo-9-carboxymethylen-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine (IIIa-b), which is reduced with H2 over Pd/C in ethanol.

1 Hermecz, I.; et al.; US 4123533 .
2 Paton, D.M.; Castaner, J.; CHINOIN-123. Drugs Fut 1979, 4, 11, 788.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(IIIa) 39529 (Z)-2-[3-(ethoxycarbonyl)-6-methyl-4-oxo-7,8-dihydro-4H-pyrido[1,2-a]pyrimidin-9(6H)-ylidene]acetic acid C14H16N2O5 详情 详情
(IIIb) 39530 (E)-2-[3-(ethoxycarbonyl)-6-methyl-4-oxo-7,8-dihydro-4H-pyrido[1,2-a]pyrimidin-9(6H)-ylidene]acetic acid C14H16N2O5 详情 详情
(I) 36161 ethyl 6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine-3-carboxylate C12H16N2O3 详情 详情
(II) 15618 2-Oxoacetic acid; Glyoxylic Acid 298-12-4 C2H2O3 详情 详情
Extended Information