Water → 2-[3-(3-Chloropropoxy)-4-ethoxybenzylamino]-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1H-benzimidazole

HRID 1985836ノート

反応式

HRID 1985836 の反応式
[NH2:1][C:2]1[N:6]([C@@H:7]2[O:19][C@H:18]([CH2:20][O:21][C:22](=[O:24])[CH3:23])[C@@H:13]([O:14][C:15](=[O:17])[CH3:16])[C@H:8]2[O:9][C:10](=[O:12])[CH3:11])[C:5]2[CH:25]=[CH:26][CH:27]=[CH:28][C:4]=2[N:3]=1.[Cl:29][CH2:30][CH2:31][CH2:32][O:33][C:34]1[CH:35]=[C:36]([CH:39]=[CH:40][C:41]=1[O:42][CH2:43][CH3:44])[CH:37]=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].O>O1CCCC1>[Cl:29][CH2:30][CH2:31][CH2:32][O:33][C:34]1[CH:35]=[C:36]([CH:39]=[CH:40][C:41]=1[O:42][CH2:43][CH3:44])[CH2:37][NH:1][C:2]1[N:6]([C@@H:7]2[O:19][C@H:18]([CH2:20][O:21][C:22](=[O:24])[CH3:23])[C@@H:13]([O:14][C:15](=[O:17])[CH3:16])[C@H:8]2[O:9][C:10](=[O:12])[CH3:11])[C:5]2[CH:25]=[CH:26][CH:27]=[CH:28][C:4]=2[N:3]=1

参加物

6

反応物 4

HCID 962WaterHCID 5049666Sodium triacetoxyborohydrideHCID 231438703-(3-Chloropropoxy)-4-ethoxybenzaldehydeHCID 688410382-Amino-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1H-benzimidazole

生成物 1

HCID 577201682-[3-(3-Chloropropoxy)-4-ethoxybenzylamino]-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1H-benzimidazole収率 77.6%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
70 °C

実験手順

2-Amino-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-1H-benzimidazole (13.7 g) and 3-(3-chloropropoxy)-4-ethoxybenzaldehyde (15.3 g) were suspended in tetrahydrofuran (150 mL), and the mixture was stirred at 70° C. for 20 hours. To the stirred reaction mixture was added sodium triacetoxyborohydride (21.7 g) under ice-cooling, and the mixture was stirred at room temperature for 24 hours. To the reaction mixture was added water, and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with brine and dried over anhydrous magnesium sulfate, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by column chromatography on silica gel (eluent: ethyl acetate/hexane=1/3) to give the title compound (16.8 g).

後処理

  1. customTo the stirred reaction mixture
  2. temperaturecooling
  3. stirringthe mixture was stirred at room temperature for 24 hours
  4. extractionthe resulting mixture was extracted with ethyl acetate
  5. washThe organic layer was washed with brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. concentrationthe filtrate was concentrated under reduced pressure
  8. customThe obtained residue was purified by column chromatography on silica gel (eluent: ethyl acetate/hexane=1/3)

出典と根拠

ORDレコード
ord-9f1332b37f1849e988554916079990e2
出典データセット
uspto-grants-2009_06
特許番号
US07547680B2

反応ノート

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