Hydrochloric Acid → HCID 68741592, compound

HRID 2354297Notes

Reaction equation

HRID 2354297 reaction equation
[CH2:1]([O:8][C@@H:9]1[C@@H:14]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@@H:12]([CH2:31][O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[O:11][C@H:10]1[C:40]1[C:48]2[C:43](=[C:44]([CH3:49])[CH:45]=[CH:46][CH:47]=2)[NH:42][CH:41]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].[I:52][C:53]1[CH:60]=[CH:59][C:56]([CH2:57]Br)=[CH:55][CH:54]=1.Cl>CN(C)C=O>[CH2:1]([O:8][C@@H:9]1[C@@H:14]([O:15][CH2:16][C:17]2[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=2)[C@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@@H:12]([CH2:31][O:32][CH2:33][C:34]2[CH:35]=[CH:36][CH:37]=[CH:38][CH:39]=2)[O:11][C@H:10]1[C:40]1[C:48]2[C:43](=[C:44]([CH3:49])[CH:45]=[CH:46][CH:47]=2)[N:42]([CH2:57][C:56]2[CH:59]=[CH:60][C:53]([I:52])=[CH:54][CH:55]=2)[CH:41]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 9542584-Iodobenzyl bromideHCID 57616256HCID 57616256, compound

Product 1

HCID 68741592HCID 68741592, compoundYield 94.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-7-methyl-1H-indole (1.18 g) in N,N-dimethylformamide (10 mL) was added 55% sodium hydride (87 mg) under ice-cooling, and the mixture was stirred at the same temperature for 15 minutes. To this mixture was added 4-iodobenzyl bromide (0.62 g) at the same temperature, and the mixture was stirred at the same temperature for 15 minutes, and stirred at room temperature for 1 hour. The reaction mixture was poured into 0.5 mol/L hydrochloric acid, and the resulting mixture was extracted with diethyl ether. The extract was washed with water and brine successively, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=5/1-3/1) to give 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-1-(4-iodo-benzyl)-7-methyl-1H-indole (1.48 g). A mixture of 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-1-(4-iodobenzyl)-7-methyl-1H-indole (1.06 g), acrylic acid (0.18 g), palladium(II) acetate (14 mg), tris(2-methylphenyl)phosphine (37 mg), triethylamine (2 mL) and acetonitrile (2 mL) was stirred at 80° C. under an argon atmosphere overnight. The reaction mixture was diluted with diethyl ether, and the mixture was stirred at room temperature for 10 minutes. The insoluble material was removed by filtration, and the solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=1/1-1/3) to give the title compound (0.85 g).

Workup

  1. temperaturecooling
  2. stirringthe mixture was stirred at the same temperature for 15 minutes
  3. stirringstirred at room temperature for 1 hour
  4. extractionthe resulting mixture was extracted with diethyl ether
  5. washThe extract was washed with water and brine successively
  6. dry with materialdried over anhydrous sodium sulfate
  7. customThe solvent was removed under reduced pressure
  8. customthe residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=5/1-3/1)

Sources & evidence

ORD record
ord-613993f9e6b142a9a115bdd43bf1152b
Source dataset
uspto-grants-2010_07
Patent number
US07750145B2

Reaction notes

Loading…