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

HRID 1869057
Notes
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Reaction equation

HRID 1869057 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][NH2:40])=[CH:33][C:32]=2[CH3:41])=[C:28]([CH:42]([CH3:44])[CH3:43])[NH:27][N:26]=1)(=[O:3])[CH3:2].[CH2:45]([O:52][C:53]([N:55]1[CH2:60][CH2:59][N:58]([C:61](=[O:68])[C:62]([C:65](O)=[O:66])([CH3:64])[CH3:63])[CH2:57][CH2:56]1)=[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(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][NH:40][C:65](=[O:66])[C:62]([C:61]([N:58]3[CH2:59][CH2:60][N:55]([C:53]([O:52][CH2:45][C:46]4[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=4)=[O:54])[CH2:56][CH2:57]3)=[O:68])([CH3:64])[CH3:63])=[CH:33][C:32]=2[CH3:41])=[C:28]([CH:42]([CH3:44])[CH3:43])[NH:27][N:26]=1)(=[O:3])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 230788921-Benzyloxycarbonyl-4-[2-carboxy-2-(methyl)propionyl]piperazineHCID 689452653-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-{[4-(2-aminoethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole

Product 1

HCID 86602042
3-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-[(4-{2-[2-{[4-(benzyloxycarbonyl)piperazin-1-yl]-carbonyl}-2-(methyl)propionylamino]ethoxy}-2-methylphenyl)-methyl]-5-isopropyl-1H-pyrazole
Yield 39.7%

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-aminoethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (0.5 g) in N,N-dimethylformamide (10 mL) were added 1-benzyloxycarbonyl-4-[2-carboxy-2-(methyl)-propionyl]piperazine (0.28 g), 1-hydroxybenzotriazole (0.22 g), triethylamine (0.18 mL) and 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (0.46 g), and the mixture was stirred at room temperature for 2 days. The reaction mixture was poured into water, and the resulting mixture was extracted with diethyl ether. The organic layer was washed with 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: dichloromethane/methanol=30/1) to give 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-[(4-{2-[2-{[4-(benzyloxycarbonyl)piperazin-1-yl]-carbonyl}-2-(methyl)propionylamino]ethoxy}-2-methylphenyl)-methyl]-5-isopropyl-1H-pyrazole (0.3 g). This material was dissolved in methanol (4 mL). To the solution was added sodium methoxide (28% methanol solution, 0.06 mL), and the mixture was stirred at room temperature for 30 minutes. To the reaction mixture was added acetic acid (0.035 mL), and the resulting mixture was concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1-5/1) to give the title compound (0.23 g).

Workup

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

Sources & evidence

ORD record
ord-84a4cc66b06243ab81e3b42ddf3d9192
Source dataset
uspto-grants-2009_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07635684B2

Reaction notes

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