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Lithium borohydride → (2S,3R)-3-((5-(benzyloxymethyl)-4-methoxy-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methylamino)butane-1,2,4-triol

HRID 533212
ノート
印刷プレビュー

反応式

HRID 533212 の反応式
[CH2:1]([O:8][CH2:9][N:10]1[C:18]2[C:17]([O:19][CH3:20])=[N:16][CH:15]=[N:14][C:13]=2[C:12]([CH2:21][NH:22][C@H:23]([C@H:29]([OH:35])[C:30](OCC)=[O:31])[C:24](OCC)=[O:25])=[CH:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[BH4-].[Li+]>C(OCC)C.CO>[CH2:1]([O:8][CH2:9][N:10]1[C:18]2[C:17]([O:19][CH3:20])=[N:16][CH:15]=[N:14][C:13]=2[C:12]([CH2:21][NH:22][C@H:23]([CH2:24][OH:25])[C@H:29]([OH:35])[CH2:30][OH:31])=[CH:11]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 4148881Lithium borohydrideHCID 25223389(2R,3S)-diethyl 2-((5-(benzyloxymethyl)-4-methoxy-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methylamino)-3-hydroxysuccinate

生成物 1

HCID 25223390(2S,3R)-3-((5-(benzyloxymethyl)-4-methoxy-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methylamino)butane-1,2,4-triol収率 66.2%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒3 回
HCID 3283
Diethyl Ether
溶媒

実験手順

To a stirred solution of the product from Example 17.1 (1.718 g, 3.53 mmol) in diethyl ether (30 ml) was added methanol (1.43 ml, 35.3 mmol) and then lithium borohydride (8.83 ml, 17.7 mmol, 2.0M in THF). After 1 h methanol (1.43 ml, 35.3 mmol) was added to the reaction mixture and stirring continued. After 1 h further the reaction mixture was diluted with methanol and then concentrated. The residue was dissolved in methanol (20 ml), diluted with hydrochloric acid (20 ml, 1M) and concentrated. The residue was chromatographed on silica gel (methanol [7N ammonia]-DCM, 15:85) giving a white solid (0.940 g, 66%). 1H NMR (CD3OD) δ 8.43 (s, 1H), 7.69 (s, 1H), 7.28-7.15 (m, 5H), 5.77 (s, 2H), 4.52 (s, 2H), 4.12 (ABq, 2H), 4.11 (s, 31-1), 3.80 (dd, J=11.7, 5.3 Hz, 1H), 3.80-3.60 (m, 3H), 3.59 (dd, J=11.0, 4.9 Hz, 1H), 2.90 (q, J=4.9 Hz, 1H). 13C NMR (CD3OD) δ 158.4, 151.4, 151.0, 139.1, 135.0, 129.7, 129.2, 129.1, 117.5, 115.3, 79.0, 72.5, 72.0, 65.6, 62.0, 61.6, 54.8, 42.1.

後処理

  1. concentrationconcentrated
  2. dissolutionThe residue was dissolved in methanol (20 ml)
  3. additiondiluted with hydrochloric acid (20 ml, 1M)
  4. concentrationconcentrated
  5. customThe residue was chromatographed on silica gel (methanol [7N ammonia]-DCM, 15:85)

出典と根拠

ORDレコード
ord-fb802b51768a4fd49121eec2d69a2275
出典データセット
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08853224B2

反応ノート

読み込み中…

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