Acetone → (7R,8R,9R)-8-Hydroxy-7-methoxy-2-methyl-9-phenyl-7,8,9,10-tetrahydroimidazo[1,2-h][1,7]naphthyridine

HRID 985091ノート

反応式

HRID 985091 の反応式
[OH:1][C@H:2]1[C:11]2[CH:10]=[CH:9][N:8]3[CH:12]=[C:13]([CH3:15])[N:14]=[C:7]3[C:6]=2[NH:5][C@H:4]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C@H:3]1[OH:22].[C:23]1(C)C=CC(S(O)(=O)=O)=CC=1.CC(C)=O>COC(OC)(C)C>[OH:22][C@H:3]1[C@H:2]([O:1][CH3:23])[C:11]2[CH:10]=[CH:9][N:8]3[CH:12]=[C:13]([CH3:15])[N:14]=[C:7]3[C:6]=2[NH:5][C@@H:4]1[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

参加物

5

反応物 3

HCID 180AcetoneHCID 6101p-Toluenesulfonic acidHCID 69230549(7S,8R,9R)-7,8-Dihydroxy-2-methyl-9-phenyl-7,8,9,10-tetrahydroimidazo[1,2-h][1,7]naphthyridine

生成物 1

HCID 69105665(7R,8R,9R)-8-Hydroxy-7-methoxy-2-methyl-9-phenyl-7,8,9,10-tetrahydroimidazo[1,2-h][1,7]naphthyridine

試薬・触媒・溶媒 1

HCID 64952,2-Dimethoxypropane溶媒

反応条件

温度
25 °C

実験手順

To a suspension of 0.62 g (2.10 mmol) (7S,8R,9R)-7,8-dihydroxy-2-methyl-9-phenyl-7,8,9,10-tetrahydroimidazo[1,2-h][1,7]naphthyridine in dimethoxypropane is added 0.51 g (26.2 mmol) p-toluenesulphonic acid and acetone (4.0 ml). The mixture is stirred for 6 h at 60° C. and 96 h at 25° C. The reaction is quenched by adding of saturated aqueous sodium hydrogen carbonate solution. Subsequently the mixture is extracted twice with dichloromethane. The combined organic layers are washed with brine, dried over sodium sulphate and evaporated in vacuo. The crude product is purified by column chromatography (dichloromethane/methanol: 100/3) to give 0.12 g (0.34 mmol/16%) of the title compound as an amorphous solid. 1H-NMR (200 MHz,[D6] DMSO): δ=2.29 (s, 3H), 3.25 (s, 3H), 4.05 (q, 1H), 4.32 (d, 1H), 4.47 (dd, 1H), 6.61 (d, 1H), 7.19-7.46 (m, 5H), 7.54 (s, 1H), 7.72 (d, 1H).

後処理

  1. customThe reaction is quenched
  2. additionby adding of saturated aqueous sodium hydrogen carbonate solution
  3. extractionSubsequently the mixture is extracted twice with dichloromethane
  4. washThe combined organic layers are washed with brine
  5. dry with materialdried over sodium sulphate
  6. customevaporated in vacuo
  7. customThe crude product is purified by column chromatography (dichloromethane/methanol: 100/3)

出典と根拠

ORDレコード
ord-479c16adcb3d47f3844b322bac484a52
出典データセット
uspto-grants-2005_03
特許番号
US06869949B2

反応ノート

読み込み中…