Cesium carbonate → HCID 59997340, compound

HRID 1815584Notes

Reaction equation

HRID 1815584 reaction equation
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([S:10]([N:13]([CH2:38][CH:39]([CH3:41])[CH3:40])[CH2:14][C@@H:15]([OH:37])[C@@H:16]([NH:25][C:26](=[O:36])[O:27][C@@H:28]3[C@H:35]4[C@H:31]([O:32][CH2:33][CH2:34]4)[O:30][CH2:29]3)[CH2:17][C:18]3[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=3)(=[O:12])=[O:11])=[CH:9][C:4]=2[O:3][CH2:2]1.Cl[C:43]1[CH:48]=[CH:47][C:46]([C:49]#[N:50])=[CH:45][N:44]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O.C(OCC)(=O)C>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([S:10]([N:13]([CH2:38][CH:39]([CH3:41])[CH3:40])[CH2:14][C@@H:15]([OH:37])[C@@H:16]([NH:25][C:26](=[O:36])[O:27][C@@H:28]3[C@H:35]4[C@H:31]([O:32][CH2:33][CH2:34]4)[O:30][CH2:29]3)[CH2:17][C:18]3[CH:23]=[CH:22][C:21]([O:24][C:43]4[CH:48]=[CH:47][C:46]([C:49]#[N:50])=[CH:45][N:44]=4)=[CH:20][CH:19]=3)(=[O:12])=[O:11])=[CH:9][C:4]=2[O:3][CH2:2]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 51520946-Chloro-3-pyridinecarbonitrileHCID 59997191(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[(1,3-benzodioxol-5-ylsulfonyl) (isobutyl)amino]-2-hydroxy-1-(4-hydroxybenzyl)propylcarbamate

Product 1

HCID 59997340HCID 59997340, compoundYield 23%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 59 mg (0.1 mMol) of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[(1,3-benzodioxol-5-ylsulfonyl)(isobutyl)amino]-2-hydroxy-1-(4-hydroxybenzyl)propylcarbamate, 120 mg of 2-chloro-5-cyanopyridine and 65 mg (0.2 mMol) of cesium carbonate in 0.5 mL of dimethyl formamide was stirred at rt for 5 h. The mixture was diluted with ethyl acetate and extracted with water. Evaporation of the solvent and chromatography on silica gel (1:1 ethyl acetate-hexanes) gave the title compound (16 mg). 1H NMR: 0.88(6H,dd), 1.55-1.8(3H,m), 2.8-3.2(7h,m), 3.65(2H,m), 3.8(2H,m), 3.95(1H,m), 5.0(2H,m), 5.6(1H,d), 6.05(2H,s), 6.82(1H,d), 6.95(1H,d), 7.0(2H,d), 7.1-7.4(4H,m), 7.9(1H,d), 8.4(1H,bs). MS: 695(M+H)

Workup

  1. extractionextracted with water
  2. customEvaporation of the solvent and chromatography on silica gel (1:1 ethyl acetate-hexanes)

Sources & evidence

ORD record
ord-72b3212dda7441518f4c543a930a0805
Source dataset
uspto-grants-2005_04
Patent number
US06878728B1

Reaction notes

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