Tetrabutylammonium Fluoride → 3'-[(Acetyloxy)methyl]-3'-deoxythymidine

HRID 2288279ノート

反応式

HRID 2288279 の反応式
[Si]([O:18][CH2:19][C@H:20]1[O:24][C@@H:23]([N:25]2[CH:33]=[C:31]([CH3:32])[C:29](=[O:30])[NH:28][C:26]2=[O:27])[CH2:22][C@@H:21]1[CH2:34][O:35][C:36](=[O:38])[CH3:37])(C(C)(C)C)(C1C=CC=CC=1)C1C=CC=CC=1.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>C1COCC1.CCOC(C)=O>[C:36]([O:35][CH2:34][C@@H:21]1[C@@H:20]([CH2:19][OH:18])[O:24][C@@H:23]([N:25]2[CH:33]=[C:31]([CH3:32])[C:29](=[O:30])[NH:28][C:26]2=[O:27])[CH2:22]1)(=[O:38])[CH3:37]

参加物

5

反応物 2

HCID 2724141Tetrabutylammonium FluorideHCID 21969455HCID 21969455、化合物

生成物 1

HCID 219694523'-[(Acetyloxy)methyl]-3'-deoxythymidine収率 57%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

Compound 183 (2.00 g, 3.73 mmol) was dissolved in dry THF (36 ml) and tetrabutylammonium fluoride (8.8 ml, 1.0 M solution in THF, 2.4 equiv.) was added via syringe at room temperature under an atmosphere of argon. After completion of the reaction (1.5 hours), as was monitored by tlc in EtOAc (Rf 0.42), the solvent was removed in vacuo. The residue was purified by silica gel flash column chromatography in EtOAc/Hexane (4:6-9:1, v/v) to afford 184 (0.63 g, 57%) 1H NMR (CDCl3): δ8.89 (br, 1 H, NH), 7.55 (d, 1 H, J=1.1 Hz, H6), 6.13 (dd, 1 H, J=4.9, 6.6 Hz, H-1'), 4.17 & 4.09 (m, 2 H, CH2 -OAc), 4.07 (d, 1 H, J=11.7 Hz, H-5' & H-5'), 3.94-3.90 (m, 1 H, H-4'), 3.76 (d, 1H, J=11.7 Hz, H-5), 2.80-2.76 (m, 1 H, H-3'), 2.60 (br, 1 H, OH), 2.29-2.25 (m, 2 H, H2' & H-2"), 2.09 (s, 3 H, COCH3), 1.91 (s, 9 H, C(CH3)3); 13C NMR (CDCl3): 170.8 (C=O), 163.8 (C4), 150.3 (C2), 136.3 (C6), 110.8 (C5), 85.4 (C1'), 83.5 (C4'), 64.2 (C5'), 36.8 (C3'), 35 35.6 (C2'), 20.8, 12.5;

後処理

  1. customAfter completion of the reaction (1.5 hours)
  2. customthe solvent was removed in vacuo
  3. customThe residue was purified by silica gel flash column chromatography in EtOAc/Hexane (4:6-9:1

出典と根拠

ORDレコード
ord-5fa0a808d94748b3bf096bcd1495aa89
出典データセット
uspto-grants-2000_07
特許番号
US06087482

反応ノート

読み込み中…