Benzyloxycarbonylglycine → HCID 68942621, compound

HRID 1868974Notes

Reaction equation

HRID 1868974 reaction equation
[C:1]([O:4][C@@H:5]1[C@@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@@H:8]([CH2:19][O:20][C:21](=[O:23])[CH3:22])[O:7][C@H:6]1[O:24][C:25]1[C:29]([CH2:30][C:31]2[CH:36]=[CH:35][C:34]([O:37][CH2:38][CH2:39][CH2:40][NH2:41])=[CH:33][CH:32]=2)=[C:28]([CH:42]([CH3:44])[CH3:43])[NH:27][N:26]=1)(=[O:3])[CH3:2].[CH2:45]([O:52][C:53]([NH:55][CH2:56][C:57](O)=[O:58])=[O:54])[C:46]1[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=1.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>CN(C)C=O.O>[C:1]([O:4][C@@H:5]1[C@@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@@H:8]([CH2:19][O:20][C:21](=[O:23])[CH3:22])[O:7][C@H:6]1[O:24][C:25]1[C:29]([CH2:30][C:31]2[CH:36]=[CH:35][C:34]([O:37][CH2:38][CH2:39][CH2:40][NH:41][C:57](=[O:58])[CH2:56][NH:55][C:53]([O:52][CH2:45][C:46]3[CH:47]=[CH:48][CH:49]=[CH:50][CH:51]=3)=[O:54])=[CH:33][CH:32]=2)=[C:28]([CH:42]([CH3:44])[CH3:43])[NH:27][N:26]=1)(=[O:3])[CH3:2]

Participants

7

Reactant 4

HCID 14349BenzyloxycarbonylglycineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 68937787HCID 68937787, compound

Product 1

HCID 68942621HCID 68942621, compoundYield 35.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(3-aminopropoxy)phenyl]methyl}-5-isopropyl-1H-pyrazole (0.1 g) in N,N-dimethylformamide (1 mL) were added 2-benzyloxycarbonylaminoacetic acid (51 mg), 1-hydroxybenzotriazole (33 mg) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (93 mg), and the mixture was stirred at room temperature overnight. The reaction mixture was poured into water, and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with water, a saturated aqueous sodium hydrogen carbonate solution, water and brine successively, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: ethyl acetate-dichloromethane/methanol=30/1-20/1) to give 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-[(4-{3-[2-(benzyloxycarbonylamino)acetylamino]propoxy}phenyl)-methyl]-5-isopropyl-1H-pyrazole (46 mg). This material was dissolved in methanol (3 mL). To the solution was added 10% palladium-carbon powder (20 mg), and the mixture was stirred at room temperature under a hydrogen atmosphere for 1.5 hours. The insoluble material was removed by filtration, and the solvent of the filtrate was removed under reduced pressure to give 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-({4-[3-(2-aminoacetylamino)propoxy]phenyl}methyl)-5-isopropyl-1H-pyrazole (34 mg). This material was dissolved in methanol (3 mL). To the solution was added sodium methoxide (28% methanol solution, 0.01 mL), and the mixture was stirred at room temperature for 30 minutes. The reaction mixture was concentrated under reduced pressure, and the residue was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol) to give the title compound (23 mg).

Workup

  1. extractionthe resulting mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water
  3. dry with materiala saturated aqueous sodium hydrogen carbonate solution, water and brine successively, dried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by column chromatography on silica gel (eluent: ethyl acetate-dichloromethane/methanol=30/1-20/1)

Sources & evidence

ORD record
ord-9b583b8e79474ff8ba7464a9b5f02971
Source dataset
uspto-grants-2009_12
Patent number
US07635684B2

Reaction notes

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