Acetic Anhydride → HCID 22226558, 화합물

HRID 1745801노트

반응식

HRID 1745801 반응식
C(O[C:5](=[O:7])[CH3:6])(=O)C.C(O)(=O)C.[NH2:12][C:13]1[N:18]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([NH2:26])=[CH:22][CH:21]=2)[C:17](=[O:27])[N:16]([CH3:28])[C:15](=[O:29])[CH:14]=1>N1C=CC=CC=1>[NH2:12][C:13]1[N:18]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([NH:26][C:5](=[O:7])[CH3:6])=[CH:22][CH:21]=2)[C:17](=[O:27])[N:16]([CH3:28])[C:15](=[O:29])[CH:14]=1

참가 물질

4

반응물 2

HCID 7918Acetic AnhydrideHCID 22226572HCID 22226572, 화합물

생성물 1

HCID 22226558HCID 22226558, 화합물

시약·촉매·용매 1

HCID 1049Pyridine용매

실험 절차

Using the general procedure for Intermediate 1, (4-nitro-benzyl)-urea [J. Med. Chem. 1996, 39, 1924] is converted into 6-amino-3-methyl-1-(4-nitro-benzyl)-1H-pyrimidine-2,4-dione, [MH]+ 277. A solution of calcium chloride (4.94 g, 45 mmol) in water (100 ml) is added to a solution of 6-amino-3-methyl-1-(4-nitro-benzyl)-1H-pyrimidine-2,4-dione (19.08 g, 69.0 mmol) in acetic acid (300 ml). Zinc dust (58.8 g, 900 mmol) is then added portionwise with external cooling. The reaction is stirred at room temperature for 1.5 hours, filtered through a celite plug and washed successively with ethanol and acetic acid. Evaporation of the combined filtrate and washings affords 6-amino-1-(4-amino-benzyl)-3-methyl-1H-pyrimidine-2,4-dione acetic acid salt, [M−3H]− 243. Acetic anhydride (7.2 ml, 76.0 mmol) is added to a cooled (0° C.) suspension of 6-amino-1-(4-amino-benzyl)-3-methyl-1H-pyrimidine-2,4-dione acetic acid salt (17.0 g, 69.0 mmol) in pyridine (260 ml). The reaction mixture is warmed to room temperature, stirred for 6 hours and the solvent evaporated. The residue is triturated with water and the solid collected by filtration and dried to afford N-[4-(6-amino-3-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-ylmethyl)-phenyl]-acetamide, [MH]+ 289. Using the general procedure for Intermediate 1, this compound is converted into N-[4-(5,6-diamino-3-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-ylmethyl)-phenyl]-acetamide, [MH]+ 304.

후처리

  1. temperaturea cooled
  2. customthe solvent evaporated
  3. customThe residue is triturated with water
  4. filtrationthe solid collected by filtration
  5. customdried

출처 및 근거

ORD 기록
ord-f31a4c9166814de69f2fcd15b2f15fc1
출처 데이터셋
uspto-grants-2006_03
특허 번호
US07019136B2

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