8-Oxa-bicyclo[3.2.1]oct-6-ene-3-carboxylic acid (6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-pyrimidin-5-yl)-amide → 8-(8-Oxa-bicyclo[3.2.1]oct-6-en-3-yl)-1,3-dipropyl-3,7-dihydro-purine-2,6-dione

HRID 395890ノート

反応式

HRID 395890 の反応式
[NH2:1][C:2]1[N:7]([CH2:8][CH2:9][CH3:10])[C:6](=[O:11])[N:5]([CH2:12][CH2:13][CH3:14])[C:4](=[O:15])[C:3]=1[NH:16][C:17]([CH:19]1[CH2:25][CH:24]2[O:26][CH:21]([CH:22]=[CH:23]2)[CH2:20]1)=O>[OH-].[Na+].CO>[CH:21]12[O:26][CH:24]([CH:23]=[CH:22]1)[CH2:25][CH:19]([C:17]1[NH:16][C:3]3[C:4](=[O:15])[N:5]([CH2:12][CH2:13][CH3:14])[C:6](=[O:11])[N:7]([CH2:8][CH2:9][CH3:10])[C:2]=3[N:1]=1)[CH2:20]2

参加物

4

反応物 1

HCID 865903668-Oxa-bicyclo[3.2.1]oct-6-ene-3-carboxylic acid (6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-pyrimidin-5-yl)-amide

生成物 1

HCID 102911968-(8-Oxa-bicyclo[3.2.1]oct-6-en-3-yl)-1,3-dipropyl-3,7-dihydro-purine-2,6-dione収率 58.1%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 14798Sodium Hydroxide溶媒

実験手順

A solution of 8-oxa-bicyclo[3.2.1]oct-6-ene-3-carboxylic acid (6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-pyrimidin-5-yl)-amide (0.185 mmol, 0.067 g) in 20% NaOH (1.23 ml) and MeOH (6.2 ml) was stirred and refluxed overnight. The reaction was cooled to room temperature and then concentrated to remove MeOH. The aqueous residue was extracted with Et2O and these extracts discarded. The aqueous was acidified (pH 2-3) with conc. HCl and then extracted with EtOAc. The combined EtOAc extracts were washed with H2O and brine and dried (MgSO4). Filtration and evaporation followed by flash column chromatography, eluting with 1:1 EtOAc/CH2Cl2, provided the title compound (0.037 g, 58%) as a beige solid. 1H NMR (300 MHz, CDCl3): 0.93-0.99 (m, 6H), 1.62-1.83 (m, 6H), 2.14-2.25 (m, 2H), 3.40-3.51 (m, 1H), 4.05-1.10 (m, 4H), 4.86 (br s, 2H), 6.25 (s, 2H).

後処理

  1. temperaturerefluxed overnight
  2. concentrationconcentrated
  3. customto remove MeOH
  4. extractionThe aqueous residue was extracted with Et2O
  5. extractionextracted with EtOAc
  6. washThe combined EtOAc extracts were washed with H2O and brine
  7. dry with materialdried (MgSO4)
  8. filtrationFiltration and evaporation
  9. washeluting with 1:1 EtOAc/CH2Cl2

出典と根拠

ORDレコード
ord-b2d8ec3403824642b5ffb25fea4b2fab
出典データセット
uspto-grants-2003_08
特許番号
US06605600B1

反応ノート

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