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Sulfuric Acid → 6-(5-chloro-4'-fluoro-biphenyl-2-ylmethyl)-9-hydroxy-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-diol

HRID 2169418
ノート
印刷プレビュー

反応式

HRID 2169418 の反応式
C([O:8][C:9]1[C:14](=[O:15])[N:13]=[C:12]([CH2:16][C:17]2[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][C:18]=2[C:24]2[CH:29]=[CH:28][C:27]([F:30])=[CH:26][CH:25]=2)[N:11]2[CH2:31][CH2:32][N:33]([CH:36]([CH3:38])[CH3:37])[C:34](=[O:35])[C:10]=12)C1C=CC=CC=1.OS(O)(=O)=O>C(O)(=O)C>[Cl:23][C:20]1[CH:21]=[CH:22][C:17]([CH2:16][C:12]2[N:11]3[CH2:31][CH2:32][N:33]([CH:36]([CH3:38])[CH3:37])[C:34]([OH:35])=[C:10]3[C:9]([OH:8])=[C:14]([OH:15])[N:13]=2)=[C:18]([C:24]2[CH:25]=[CH:26][C:27]([F:30])=[CH:28][CH:29]=2)[CH:19]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

4

反応物 2

HCID 1118Sulfuric AcidHCID 867260499-benzyloxy-6-(5-chloro-4'-fluoro-biphenyl-2-ylmethyl)-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-dione

生成物 1

HCID 867260506-(5-chloro-4'-fluoro-biphenyl-2-ylmethyl)-9-hydroxy-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-diol収率 80,107.102%

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

実験手順

To a stirred solution of 9-benzyloxy-6-(5-chloro-4′-fluoro-biphenyl-2-ylmethyl)-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-dione (385) (30 mg, 0.056 mmol) in acetic acid (1 mL), concentrated H2SO4 (0.001 mL, 0.011 mmol) was added and the reaction mixture was stirred for 4 h at room temperature (monitored by LC-MS). From the reaction, volatiles was removed and the residue was quenched with ice cold water (5 mL). Aqueous saturated NaHCO3 was added to adjust the pH up to 8. The quenched mass was extracted with ethyl acetate (2×15 mL). The combined organic part was dried, concentrated and purified by preparative HPLC to get 6-(5-chloro-4′-fluoro-biphenyl-2-ylmethyl)-9-hydroxy-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-diol (386) (11.2 mg, 44.86 mmol) as an off-white solid.

後処理

  1. customFrom the reaction, volatiles
  2. customwas removed
  3. customthe residue was quenched with ice cold water (5 mL)
  4. additionAqueous saturated NaHCO3 was added
  5. extractionThe quenched mass was extracted with ethyl acetate (2×15 mL)
  6. customThe combined organic part was dried
  7. concentrationconcentrated
  8. custompurified by preparative HPLC

出典と根拠

ORDレコード
ord-ad8b5cbc36ee42c9b8582d16282dd79b
出典データセット
uspto-grants-2015_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09045486B2

反応ノート

読み込み中…

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