Sodium Iodide → 4-({4-[3-(Benzyloxycarbonyl)propoxy]-2-methylphenyl}-methyl)-5-isopropyl-3-(2,3,4,6-tetra-O-pivaloyl-beta-D-glucopyranosyloxy)-1H-pyrazole

HRID 1442412ノート

反応式

HRID 1442412 の反応式
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]2[C:10]([O:17][C@@H:18]3[O:44][C@H:43]([CH2:45][O:46][C:47](=[O:52])[C:48]([CH3:51])([CH3:50])[CH3:49])[C@@H:35]([O:36][C:37](=[O:42])[C:38]([CH3:41])([CH3:40])[CH3:39])[C@H:27]([O:28][C:29](=[O:34])[C:30]([CH3:33])([CH3:32])[CH3:31])[C@H:19]3[O:20][C:21](=[O:26])[C:22]([CH3:25])([CH3:24])[CH3:23])=[N:11][NH:12][C:13]=2[CH:14]([CH3:16])[CH3:15])=[C:4]([CH3:53])[CH:3]=1.Br[CH2:55][CH2:56][CH2:57][C:58]([O:60][CH2:61][C:62]1[CH:67]=[CH:66][CH:65]=[CH:64][CH:63]=1)=[O:59].C(=O)([O-])[O-].[Cs+].[Cs+].[I-].[Na+]>CN(C)C=O.O>[CH2:61]([O:60][C:58]([CH2:57][CH2:56][CH2:55][O:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]2[C:10]([O:17][C@@H:18]3[O:44][C@H:43]([CH2:45][O:46][C:47](=[O:52])[C:48]([CH3:51])([CH3:50])[CH3:49])[C@@H:35]([O:36][C:37](=[O:42])[C:38]([CH3:39])([CH3:41])[CH3:40])[C@H:27]([O:28][C:29](=[O:34])[C:30]([CH3:31])([CH3:32])[CH3:33])[C@H:19]3[O:20][C:21](=[O:26])[C:22]([CH3:25])([CH3:23])[CH3:24])=[N:11][NH:12][C:13]=2[CH:14]([CH3:16])[CH3:15])=[C:4]([CH3:53])[CH:3]=1)=[O:59])[C:62]1[CH:67]=[CH:66][CH:65]=[CH:64][CH:63]=1

参加物

7

反応物 4

HCID 5238Sodium IodideHCID 10796Cesium carbonateHCID 3832489Benzyl 4-bromobutanoateHCID 685373584-[(4-Hydroxy-2-methylphenyl)methyl]-5-isopropyl-3-(2,3,4,6-tetra-O-pivaloyl-beta-D-glucopyranosyloxy)-1H-pyrazole

生成物 1

HCID 866068504-({4-[3-(Benzyloxycarbonyl)propoxy]-2-methylphenyl}-methyl)-5-isopropyl-3-(2,3,4,6-tetra-O-pivaloyl-beta-D-glucopyranosyloxy)-1H-pyrazole収率 64.7%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

To a solution of 4-[(4-hydroxy-2-methylphenyl)methyl]-5-isopropyl-3-(2,3,4,6-tetra-O-pivaloyl-β-D-glucopyranosyl-oxy)-1H-pyrazole (0.2 g) in N,N-dimethylformamide (3 mL) were added benzyl 4-bromobutyrate (0.1 g), cesium carbonate (0.18 g) and a catalytic amount of sodium iodide, and the mixture was stirred at room temperature overnight. The reaction mixture was poured into water, and the resulting mixture was extracted with ethylacetate. The extract was washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=3/1-2/1) to give the title compound (0.16 g).

後処理

  1. extractionthe resulting mixture was extracted with ethylacetate
  2. washThe extract was washed with water and brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was removed under reduced pressure
  5. customthe residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=3/1-2/1)

出典と根拠

ORDレコード
ord-463f2970aff5465981107304d7d6def8
出典データセット
uspto-grants-2010_02
特許番号
US07655632B2

反応ノート

読み込み中…