1-Hydroxybenzotriazole → 3-(2,3,4,6-Tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-[(4-{2-[1-benzyloxycarbonyl-1-(methyl)-ethylcarbamoyl]ethoxy}-2-methylphenyl)methyl]-5-isopropyl-1H-pyrazole

HRID 2223637Notes

Reaction equation

HRID 2223637 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][C:40](O)=[O:41])=[CH:33][C:32]=2[CH3:43])=[C:28]([CH:44]([CH3:46])[CH3:45])[NH:27][N:26]=1)(=[O:3])[CH3:2].Cl.[NH2:48][C:49]([CH3:61])([CH3:60])[C:50]([O:52][CH2:53][C:54]1[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=1)=[O:51].ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>CN(C)C=O.O.C(N(CC)CC)C>[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][C:40](=[O:41])[NH:48][C:49]([C:50]([O:52][CH2:53][C:54]3[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=3)=[O:51])([CH3:61])[CH3:60])=[CH:33][C:32]=2[CH3:43])=[C:28]([CH:44]([CH3:46])[CH3:45])[NH:27][N:26]=1)(=[O:3])[CH3:2]

Participants

8

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 21415531Benzyl 2-amino-2-methylpropanoate hydrochlorideHCID 685360323-(2,3,4,6-tetra-O-acetyl-beta-D-gluco-pyranosyloxy)-4-{[4-(2-carboxyethoxy)-2-methylphenyl]-methyl}-5-isopropyl-1H-pyrazole

Product 1

HCID 685359913-(2,3,4,6-Tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-[(4-{2-[1-benzyloxycarbonyl-1-(methyl)-ethylcarbamoyl]ethoxy}-2-methylphenyl)methyl]-5-isopropyl-1H-pyrazoleYield 84.4%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-carboxyethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (0.14 g) in N,N-dimethylformamide (3 mL) were added benzyl 2-amino-2-methylpropionate hydrochloride (57 mg), 1-hydroxybenzotriazole (31 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (60 mg) and triethylamine (0.087 mL), and the mixture was stirred at room temperature for 4 hours. The reaction mixture was poured into water, and the resulting mixture was extracted with ethyl acetate. The extract was washed with water and brine, 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: dichloromethane/methanol=40/1-20/1) to give the title compound (0.15 g).

Workup

  1. extractionthe resulting mixture was extracted with ethyl acetate
  2. washThe extract was washed with water and brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was removed under reduced pressure
  5. customthe residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=40/1-20/1)

Sources & evidence

ORD record
ord-84febc2e1bd34188bd8ddf13be840493
Source dataset
uspto-grants-2008_05
Patent number
US07375087B2

Reaction notes

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