1-(benzyloxycarbonyl)-3-(6-O-ethoxy-carbonyl-beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)-methyl]-5-methylpyrazole → 3-(6-O-ethoxycarbonyl-beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole

HRID 33137Notes

Reaction equation

HRID 33137 reaction equation
C(OC([N:11]1[C:15]([CH3:16])=[C:14]([CH2:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH:25]([CH3:27])[CH3:26])=[CH:20][CH:19]=2)[C:13]([O:28][C@@H:29]2[O:37][C@H:36]([C:38](=C=O)[O:39]OCC)[C@@H:34]([OH:35])[C@H:32]([OH:33])[C@H:30]2[OH:31])=[N:12]1)=O)C1C=CC=CC=1>O1CCCC1.[C].[Pd]>[CH2:13]([O:28][C:29]([O:39][CH2:38][C@H:36]1[O:37][C@@H:29]([O:28][C:13]2[C:14]([CH2:17][C:18]3[CH:19]=[CH:20][C:21]([O:24][CH:25]([CH3:27])[CH3:26])=[CH:22][CH:23]=3)=[C:15]([CH3:16])[NH:11][N:12]=2)[C@H:30]([OH:31])[C@@H:32]([OH:33])[C@@H:34]1[OH:35])=[O:37])[CH3:14]

Participants

4

Reactant 1

HCID 866027901-(benzyloxycarbonyl)-3-(6-O-ethoxy-carbonyl-beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)-methyl]-5-methylpyrazole

Product 1

HCID 235431683-(6-O-ethoxycarbonyl-beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazoleYield 150%

Reagents, catalysts & solvents 2

HCID 178418390HCID 178418390, compoundCatalystHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 1-(benzyloxycarbonyl)-3-(6-O-ethoxy-carbonyl-β-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)-methyl]-5-methylpyrazole (0.17 g) in tetrahydrofuran (4 mL) was added 10% palladium-carbon powder, and the mixture was stirred under hydrogen atmosphere at room temperature for 3 hours. The resulting insoluble material was removed by filtration, and the solvent of the filtrate was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1) to give 3-(6-O-ethoxycarbonyl-β-D-glucopyranosyloxy)-4-[(4-isopropoxy-phenyl)methyl]-5-methyl-1H-pyrazole (0.10 g).

Workup

  1. customThe resulting insoluble material was removed by filtration
  2. customthe solvent of the filtrate was removed under reduced pressure
  3. customThe residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1)

Sources & evidence

ORD record
ord-eed88b799d194121bb7d656e515e9fde
Source dataset
uspto-grants-2008_09
Patent number
US07429568B2

Reaction notes

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