Dicyclohexylcarbodiimide → HCID 86628795, compound

HRID 2354305Notes

Reaction equation

HRID 2354305 reaction equation
[CH2:1]([O:8][C@@H:9]1[C@@H:14]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@@H:12]([CH2:31][O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[O:11][C@H:10]1[C:40]1[C:48]2[C:43](=[C:44]([CH3:49])[CH:45]=[CH:46][CH:47]=2)[N:42]([CH2:50][C:51]2[CH:56]=[CH:55][C:54](/[CH:57]=[CH:58]/[CH2:59][C:60]([OH:62])=[O:61])=[CH:53][CH:52]=2)[CH:41]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:63]([O:70][CH2:71][CH2:72]O)[C:64]1[CH:69]=[CH:68][CH:67]=[CH:66][CH:65]=1.C1(N=C=NC2CCCCC2)CCCCC1>CN(C)C1C=CN=CC=1.ClCCl>[CH2:1]([O:8][C@@H:9]1[C@@H:14]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@@H:12]([CH2:31][O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[O:11][C@H:10]1[C:40]1[C:48]2[C:43](=[C:44]([CH3:49])[CH:45]=[CH:46][CH:47]=2)[N:42]([CH2:50][C:51]2[CH:56]=[CH:55][C:54](/[CH:57]=[CH:58]/[CH2:59][C:60]([O:62][CH2:72][CH2:71][O:70][CH2:63][C:64]3[CH:69]=[CH:68][CH:67]=[CH:66][CH:65]=3)=[O:61])=[CH:53][CH:52]=2)[CH:41]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 10868DicyclohexylcarbodiimideHCID 121412-(Benzyloxy) ethanolHCID 57616312HCID 57616312, compound

Product 1

HCID 86628795HCID 86628795, compoundYield 41.3%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a mixture of 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-1-[4-((1E)-3-carboxyprop-1-enyl)benzyl]-7-methyl-1H-indole (0.10 g), 2-(benzyloxy)ethanol (22 mg), 4-dimethylaminopyridine (7 mg) and dichloromethane (0.5 mL) was added dicyclohexylcarbodiimide (37 mg), and the mixture was stirred at room temperature overnight. The reaction mixture was directly purified by column chromatography on silica gel (eluent: n-hexane/ethylacetate=4/1-2/1) to give 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-1-(4-{(1E)-3-[2-(benzyl-oxy)ethoxycarbonyl]prop-1-enyl}benzyl)-7-methyl-1H-indole (48 mg). This material was dissolved in a mixed solvent of methanol (1 mL) and tetra hydrofuran (1 mL). To the solution was added 10% palladium-carbon powder (50 mg), and the mixture was stirred at room temperature under a hydrogen atmosphere for 4 hours. The insoluble material was removed by filtration, and the solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=12/1-8/1) to give the title compound (14 mg).

Workup

  1. customThe reaction mixture was directly purified by column chromatography on silica gel (eluent: n-hexane/ethylacetate=4/1-2/1)

Sources & evidence

ORD record
ord-80978ab070054139a6cd8e2d400ca0a5
Source dataset
uspto-grants-2010_07
Patent number
US07750145B2

Reaction notes

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