Water → 1-(cyclopropylmethyl)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-3-(6-O-propionyl-beta-D-glucopyranosyloxy)-1H-pyrazole

HRID 457525

Reaction equation

HRID 457525 reaction equation
[CH:1]1([CH2:4][N:5]2[C:9]([CH3:10])=[C:8]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([O:18][CH:19]([CH3:21])[CH3:20])=[CH:14][CH:13]=3)[C:7]([O:22][C@@H:23]3[O:31][C@H:30]([CH2:32][OH:33])[C@@H:28]([OH:29])[C@H:26]([OH:27])[C@H:24]3[OH:25])=[N:6]2)[CH2:3][CH2:2]1.[C:34](Cl)(=[O:37])[CH2:35][CH3:36].O.C(O)(=O)CC(CC(O)=O)(C(O)=O)O.O>CC1C=C(C)C=C(C)N=1>[CH:1]1([CH2:4][N:5]2[C:9]([CH3:10])=[C:8]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([O:18][CH:19]([CH3:21])[CH3:20])=[CH:14][CH:13]=3)[C:7]([O:22][C@@H:23]3[O:31][C@H:30]([CH2:32][O:33][C:34](=[O:37])[CH2:35][CH3:36])[C@@H:28]([OH:29])[C@H:26]([OH:27])[C@H:24]3[OH:25])=[N:6]2)[CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 962WaterHCID 222302-Hydroxy-1,2,3-propanetricarboxylic acid hydrate (1:1)HCID 62324Propionyl chlorideHCID 691338471-(cyclopropylmethyl)-3-(beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole

Product 1

HCID 691344571-(cyclopropylmethyl)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-3-(6-O-propionyl-beta-D-glucopyranosyloxy)-1H-pyrazoleYield 405.5%

Reagents, catalysts & solvents 1

HCID 79532,4,6-TrimethylpyridineSolvent

Procedure

To a solution of 1-(cyclopropylmethyl)-3-(β-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole (0.40 g) in 2,4,6-trimethylpyridine (1.5 mL) was added propionyl chloride (0.0088 g) at 0° C., and the mixture was stirred for 3 hours. Citric acid monohydrate (3.3 g) and water were added to the reaction mixture, and the mixture was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol), and successively by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1) to give 1-(cyclopropylmethyl)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-3-(6-O-propionyl-β-D-glucopyranosyloxy)-1H-pyrazole (0.20 g).

Workup

  1. distillationthe mixture was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol)

Sources & evidence

ORD record
ord-ac877f45b2b64da3880a19235c2cba2b
Source dataset
uspto-grants-2007_03
Patent number
US07189702B2

Linked notes

Loading…