Theophylline → 7-[4-(4-Hydroxybenzoyl)benzyl)-1,3-dimethylxanthine

HRID 1291415ノート

反応式

HRID 1291415 の反応式
[CH3:1][N:2]1[C:11](=[O:12])[C:10]2[NH:9][CH:8]=[N:7][C:6]=2[N:5]([CH3:13])[C:3]1=[O:4].C(=O)([O-])[O-].[K+].[K+].[O:20]([C:28]1[CH:43]=[CH:42][C:31]([C:32]([C:34]2[CH:41]=[CH:40][C:37]([CH2:38]Br)=[CH:36][CH:35]=2)=[O:33])=[CH:30][CH:29]=1)[Si](C(C)(C)C)(C)C>CN(C=O)C.O>[OH:20][C:28]1[CH:29]=[CH:30][C:31]([C:32]([C:34]2[CH:41]=[CH:40][C:37]([CH2:38][N:9]3[C:10]4[C:11](=[O:12])[N:2]([CH3:1])[C:3](=[O:4])[N:5]([CH3:13])[C:6]=4[N:7]=[CH:8]3)=[CH:36][CH:35]=2)=[O:33])=[CH:42][CH:43]=1

参加物

6

反応物 3

HCID 2153TheophyllineHCID 11430Potassium CarbonateHCID 18918912HCID 18918912、化合物

生成物 1

HCID 189190737-[4-(4-Hydroxybenzoyl)benzyl)-1,3-dimethylxanthine収率 109.7%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

A solution of 1,3-dimethylxanthine (742 mg), potassium carbonate (569 mg) and 4-(4-t-butyldimethylsiloxybenzoyl)benzyl bromide (2292 mg) in DMF (10 ml) was stirred at 60° C. for 5 hours. This reaction mixture was poured in water and extracted with ethyl acetate. The extract was washed with water, dried, and concentrated. The residue was purified by silica gel column chromatography (hexane: ethyl acetate =1:3) and recrystallized from chloroform-isopropyl ether to provide the title compound as colorless solid (1763 mg).

後処理

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water
  3. customdried
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel column chromatography (hexane: ethyl acetate =1:3)
  6. customrecrystallized from chloroform-isopropyl ether

出典と根拠

ORDレコード
ord-d71f9550ab2f4f45a2df1d1bf5e35bd9
出典データセット
uspto-grants-1998_05
特許番号
US05753664

反応ノート

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