HCID 68940131, compound → HCID 68941152, compound

HRID 1869053Notes

Reaction equation

HRID 1869053 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]([CH2:37][CH2:38][NH:39]C(OCC3C=CC=CC=3)=O)=[CH:33][C:32]=2[CH3:50])=[C:28]([CH:51]([CH3:53])[CH3:52])[NH:27][N:26]=1)(=[O:3])[CH3:2]>O1CCCC1.[C].[Pd]>[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]([CH2:37][CH2:38][NH2:39])=[CH:33][C:32]=2[CH3:50])=[C:28]([CH:51]([CH3:53])[CH3:52])[NH:27][N:26]=1)(=[O:3])[CH3:2]

Participants

4

Reactant 1

HCID 68940131HCID 68940131, compound

Product 1

HCID 68941152HCID 68941152, compoundYield 97.8%

Reagents, catalysts & solvents 2

HCID 178418390HCID 178418390, compoundCatalystHCID 8028TetrahydrofuranSolvent

Procedure

3-(2,3,4,6-Tetra-O-acetyl-β-D-glucopyranosyloxy)-4-({4-[2-(benzyloxycarbonylamino)ethyl]-2-methylphenyl}-methyl)-5-isopropyl-1H-pyrazole (0.3 g) was dissolved in tetrahydrofuran (2 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 6 hours. The insoluble material was removed by filtration, and the filtrate was concentrated under reduced pressure to give 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-aminoethyl)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (0.24 g). The obtained 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-aminoethyl)-2-methylphenyl]-methyl}-5-isopropyl-1H-pyrazole (0.13 g) was dissolved in dichloromethane (2.6 mL). To the solution were added triethylamine (0.042 mL) and 4-nitrophenyl chloroformate (52 mg) under ice-cooling, and the mixture was stirred at room temperature for 2 hours. A ¼ amount of the reaction mixture was separated. To the part of the reaction mixture were added triethylamine (0.028 mL) and L-threonine amide hydrochloride (23 mg), and the mixture was stirred at room temperature overnight. The reaction mixture was purified by column chromatography on silica gel (eluent: ethyl acetate-ethyl acetate/methanol=10/1) to give 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-{3-[(1S,2R)-1-carbamoyl-2-hydroxypropyl]-ureido}ethyl)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (30 mg). This material was dissolved in methanol (2 mL). To the solution was added sodium methoxide (28% methanol solution, 0.006 mL), and the mixture was stirred at room temperature for 1 hour. To the reaction mixture was added acetic acid (0.005 mL). The resulting 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 (21 mg).

Workup

  1. customThe insoluble material was removed by filtration
  2. concentrationthe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-51881adce0bf4ffc8a7f42eb432c4152
Source dataset
uspto-grants-2009_12
Patent number
US07635684B2

Reaction notes

Loading…