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【结 构 式】 
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【分子编号】38078 【品名】5-methyl 1-(4-nitrophenyl) 4-(bromomethyl)-6-(3,4-difluorophenyl)-2-methoxy-1,5(6H)-pyrimidinedicarboxylate 【CA登记号】 |
【 分 子 式 】C21H16BrF2N3O7 【 分 子 量 】540.2748664 【元素组成】C 46.69% H 2.98% Br 14.79% F 7.03% N 7.78% O 20.73% |
合成路线1
该中间体在本合成路线中的序号：(VIII)The reaction of methyl acetoacetate (I) with 3,4-difluorobenzaldehyde (II) in hot benzene gives the corresponding benzylidene derivative (III), which is cyclized with O-methylisourea (IV) by means of NaHCO3 in hot DMF yielding the dihydropyrimidine (V). The condensation of (V) with 4-nitrophenyl chloroformate (VI) by means of DMAP in dichloromethane affords the 4-nitrophenyl ester (VII), which is brominated with Br2 in chloroform to the bromomethyl compound (VIII). The cyclization of (VIII) by heating at 130 C affords the furopyrimidine (X), which is treated with propylamine derivative (X) in THF or dichloromethane to furnish the target amide.
| 【1】 Chiu, G.; Tian, D.; Lagu, B.; et al.; Synthesis and evaluation of furo[3,4-d]pyrimidinones as selective alpha1a-adrenergic receptor antagonists. Bioorg Med Chem Lett 2000, 10, 2, 175. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (I) | 11791 | methyl 3-oxobutanoate; Methyl acetoacetate | 105-45-3 | C5H8O3 | 详情 | 详情 |
| (II) | 26654 | 3,4-difluorobenzaldehyde | 34036-07-2 | C7H4F2O | 详情 | 详情 |
| (III) | 38075 | methyl (Z)-2-acetyl-3-(3,4-difluorophenyl)-2-propenoate | C12H10F2O3 | 详情 | 详情 | |
| (IV) | 26657 | O-methyl isourea; [Amino(imino)methoxy]methane | 52328-05-9 | C2H6N2O | 详情 | 详情 |
| (V) | 38076 | methyl 6-(3,4-difluorophenyl)-2-methoxy-4-methyl-1,6-dihydro-5-pyrimidinecarboxylate | C14H14F2N2O3 | 详情 | 详情 | |
| (VI) | 16605 | 4-Nitrophenyl chloroformate; 1-[(Chlorocarbonyl)oxy]-4-nitrobenzene | 7693-46-1 | C7H4ClNO4 | 详情 | 详情 |
| (VII) | 38077 | 5-methyl 1-(4-nitrophenyl) 6-(3,4-difluorophenyl)-2-methoxy-4-methyl-1,5(6H)-pyrimidinedicarboxylate | C21H17F2N3O7 | 详情 | 详情 | |
| (VIII) | 38078 | 5-methyl 1-(4-nitrophenyl) 4-(bromomethyl)-6-(3,4-difluorophenyl)-2-methoxy-1,5(6H)-pyrimidinedicarboxylate | C21H16BrF2N3O7 | 详情 | 详情 | |
| (IX) | 38079 | 4-nitrophenyl 4-(3,4-difluorophenyl)-2-methoxy-5-oxo-5,6-dihydrofuro[2,3-d]pyrimidine-3(4H)-carboxylate | C20H13F2N3O7 | 详情 | 详情 | |
| (X) | 25450 | methyl 1-(3-aminopropyl)-4-phenyl-4-piperidinecarboxylate | C16H24N2O2 | 详情 | 详情 |