p-Toluenesulfonic acid → 2',3'-Didehydro-2',3'-dideoxyuridine

HRID 249056

反応式

HRID 249056 の反応式
C([O:20][CH2:21][C@H:22]1[O:26][C@@H:25]([N:27]2[CH:34]=[CH:33][C:31](=[O:32])[NH:30][C:28]2=[O:29])[CH:24]=[CH:23]1)(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C1(C)C=CC(S(O)(=O)=O)=CC=1.[OH-].[Na+]>C(Cl)(Cl)Cl.CO>[C@@H:25]1([N:27]2[CH:34]=[CH:33][C:31](=[O:32])[NH:30][C:28]2=[O:29])[O:26][C@H:22]([CH2:21][OH:20])[CH:23]=[CH:24]1

参加物

6

反応物 3

HCID 6101p-Toluenesulfonic acidHCID 14798Sodium HydroxideHCID 110916535'O-trityl-2',3'-dideoxy-2',3'-didehydrouridine

生成物 1

HCID 651592',3'-Didehydro-2',3'-dideoxyuridine

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 6212Chloroform溶媒

実験手順

5'O-trityl-2',3'-dideoxy-2',3'-didehydrouridine (0.5 gm.,1.1 mM) was dissolved in a chloroform (10 mL) and methanol (2 mL) mixture containing 2% p-toluenesulphonic acid. The reaction mixture was stirred at room temperature for 0.75 hr., and then neutralized with 2N NaOH (0.5 mL). The solvent was removed in vacuo and the residue chromatographed on silica using chloroform/acetone (2:1) as eluent. The desired product was isolated as a white crystalline solid with the same physical and spectroscopic characteristics as d4U produced by an alternative method. M.p. 155° C. 1H NMR (360 Mhz, D2O/DMSO) 7.8 (d, 1H, H6), 6.7 (m, 1H, H1'), 6.37 (m, 1H, H2'), 5.8 (m, 1H, H3'), 5.56 (d, 1H, H5), 4.7 (m, 1H, H4'), 3.6 (m, 2H, H5'). 13C NMR (70 Mhz, D2O/DMSO) 163 (C4), 151 (C2), 141 (C2'), 135 (C3'), 126 (C6), 101 (C5), 89 (C1'), 87 (C4'), 62 (C5').

後処理

  1. customThe solvent was removed in vacuo
  2. customthe residue chromatographed on silica

出典と根拠

ORDレコード
ord-7594f2a196c44593b7c5773cc7805d8c
出典データセット
uspto-grants-1993_05
特許番号
US05212294

関連ノート

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