Potassium Carbonate → 4-({4-[3-(Benzyloxy)propyl]phenyl}methyl)-5-trifluoromethyl-3-(2,3,4,6-tetra-o-acetyl-beta-d-glucopyranosyloxy)-1h-pyrazole

HRID 457498

Reaction equation

[CH2:1]([O:8][CH2:9][CH2:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18][C:19]2[C:20](=[O:28])[NH:21][NH:22][C:23]=2[C:24]([F:27])([F:26])[F:25])=[CH:14][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:29][C:30]([O:32][CH2:33][C@H:34]1[O:39][C@H:38](Br)[C@H:37]([O:41][C:42]([CH3:44])=[O:43])[C@@H:36]([O:45][C:46]([CH3:48])=[O:47])[C@@H:35]1[O:49][C:50]([CH3:52])=[O:51])=[O:31].C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[CH2:1]([O:8][CH2:9][CH2:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18][C:19]2[C:20]([O:28][C@@H:38]3[O:39][C@H:34]([CH2:33][O:32][C:30](=[O:31])[CH3:29])[C@@H:35]([O:49][C:50](=[O:51])[CH3:52])[C@H:36]([O:45][C:46](=[O:47])[CH3:48])[C@H:37]3[O:41][C:42](=[O:43])[CH3:44])=[N:21][NH:22][C:23]=2[C:24]([F:27])([F:26])[F:25])=[CH:14][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 4-({4-[3-(benzyloxy)propyl]phenyl}methyl)-5-trifluoromethyl-1,2-dihydro-3H-pyrazol-3-one (0.83 g) and acetobromo-α-D-glucose (1.5 g) in acetonitrile (12 mL) was added potassium carbonate (0.55 g), and the mixture was stirred at 60° C. for 20 hours. Insoluble materials were 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: hexane/ethyl acetate=1/1-1/2) to give 4-({4-[3-(benzyloxy)propyl]phenyl}methyl)-5-trifluoromethyl-3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-1H-pyrazole (0.64 g).

Workup

customInsoluble materials were removed by filtration
customthe solvent of the filtrate was removed under reduced pressure
customThe residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=1/1-1/2)

Sources & evidence

ORD record: ord-965851f3f14949e2a4becf85eafee7fa
Source dataset: uspto-grants-2007_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07189702B2

Linked notes

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