5-Amino-3H-thiazolo[4,5]pyrimidine-2-one → 5-Amino-3-(2',3,5'-tri-O-acetyl-beta-D-ribofuranosyl)-3H-thiazolo[4,5-d]pyrimidin-2-one

HRID 19488

反応式

HRID 19488 の反応式
[NH2:1][C:2]1[N:3]=[CH:4][C:5]2[S:10][C:9](=[O:11])[NH:8][C:6]=2[N:7]=1.C(O)(=O)C.C(O)(=O)C.C(O)(=O)C.C(O)(=O)C.C(O[C@@H:32]1[O:44][C@H:43]([CH2:45][O:46][C:47](=[O:49])[CH3:48])[C@@H:38]([O:39][C:40](=[O:42])[CH3:41])[C@H:33]1[O:34][C:35](=[O:37])[CH3:36])(=O)C>>[NH2:1][C:2]1[N:3]=[CH:4][C:5]2[S:10][C:9](=[O:11])[N:8]([C@@H:32]3[O:44][C@H:43]([CH2:45][O:46][C:47](=[O:49])[CH3:48])[C@@H:38]([O:39][C:40](=[O:42])[CH3:41])[C@H:33]3[O:34][C:35](=[O:37])[CH3:36])[C:6]=2[N:7]=1

参加物

3

反応物 2

HCID 247640395-Amino-3H-thiazolo[4,5]pyrimidine-2-oneHCID 671510951,2,3,5-tetra-O-acetyl-beta-D-ribofuranose tetraacetate

生成物 1

HCID 116332675-Amino-3-(2',3,5'-tri-O-acetyl-beta-D-ribofuranosyl)-3H-thiazolo[4,5-d]pyrimidin-2-one収率 40%

反応条件

温度
150 °C

実験手順

Compound 86 (62 mg, 0.4 mmol), 1,2,3,5-tetra-O-acetyl-β-D-ribofuranose tetraacetate (128 mg, 0.4 mmol), and catalytic bis(p-nitrophenyl)hydrogen phosphate (13 mg, 0.04 mmol) were mixed and placed in a 500 ml flask. The reaction vessel was carefully placed under vacuum (˜5.0 mmHg) and lowered into an oil bath heated at 150° C. for 10 minutes. After cooling to room temperature, the solids were washed with ethyl acetate. The crude product was purified by flash column. (silica, 5 to 35% ethyl acetate gradient in chloroform) to yield 68 mg of compound 79 (40%) as a white solid as a white powder identical in all respects to material isolated in Example 38, step 2.

後処理

  1. customplaced in a 500 ml flask
  2. customlowered into an oil bath
  3. temperatureAfter cooling to room temperature
  4. washthe solids were washed with ethyl acetate
  5. customThe crude product was purified by flash column

出典と根拠

ORDレコード
ord-02a8f598118a4dae8f8443f15fbf5fba
出典データセット
uspto-grants-2010_06
特許番号
US07745415B2

関連ノート

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