1,8-Diazabicyclo(5.4.0)undec-7-ene → (3R,3aR,6R,6aR)-6-(6-chloro-5-iodo-3-((2-(trimethylsilyl)ethoxy)methyl)-3H-imidazo[4,5-b]pyridin-2-yloxy)hexahydrofuro[3,2-b]furan-3-ol

HRID 715554Notes

Reaction equation

HRID 715554 reaction equation
[O:1]1[CH2:5][C@@H:4]([OH:6])[C@H:3]2[O:7][CH2:8][C@@H:9]([OH:10])[C@@H:2]12.N12CCCN=C1CCCCC2.[Cl:22][C:23]1[CH:24]=[C:25]2[N:32]=[C:31](S(C)(=O)=O)[N:30]([CH2:37][O:38][CH2:39][CH2:40][Si:41]([CH3:44])([CH3:43])[CH3:42])[C:26]2=[N:27][C:28]=1[I:29]>CN(C)C=O>[Cl:22][C:23]1[CH:24]=[C:25]2[N:32]=[C:31]([O:6][C@H:4]3[C@H:3]4[O:7][CH2:8][C@@H:9]([OH:10])[C@H:2]4[O:1][CH2:5]3)[N:30]([CH2:37][O:38][CH2:39][CH2:40][Si:41]([CH3:44])([CH3:43])[CH3:42])[C:26]2=[N:27][C:28]=1[I:29]

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 109756241,4:3,6-Dianhydro-D-mannitolHCID 1235023166-Chloro-5-iodo-2-(methylsulfonyl)-3-((2-(trimethylsilyl)ethoxy)methyl)-3H-imidazo[4,5-b]pyridine

Product 1

HCID 123413447(3R,3aR,6R,6aR)-6-(6-chloro-5-iodo-3-((2-(trimethylsilyl)ethoxy)methyl)-3H-imidazo[4,5-b]pyridin-2-yloxy)hexahydrofuro[3,2-b]furan-3-ol

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

(3R,3aR,6R,6aR)-Hexahydrofuro[3,2-b]furan-3,6-diol (1.84 g) is dissolved in N,N-dimethylformamide (10 mL) and treated with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU; 1.9 mL). A solution of 6-chloro-5-iodo-2-(methylsulfonyl)-3-(2-trimethylsilanyl-ethoxymethyl)-3H-imidazo[4,5-b]pyridine (2.05 g) in N,N-dimethylformamide (20 mL) is added dropwise and the mixture is stirred for 2 hours at room temperature. The mixture is partitioned between water and ethylacetate and the organic phase is washed with brine and dried (MgSO4). The solvents are evaporated in vacuo and the residue is chromatographed on silica gel (cyclohexane/ethyl acetate 80:20→0:100) to give the title compound. LC (method 1): tR=1.17 min; Mass spectrum (ESI+): m/z=554 [M+H]+.

Workup

  1. customThe mixture is partitioned between water and ethylacetate
  2. washthe organic phase is washed with brine
  3. dry with materialdried (MgSO4)
  4. customThe solvents are evaporated in vacuo
  5. customthe residue is chromatographed on silica gel (cyclohexane/ethyl acetate 80:20→0:100)

Sources & evidence

ORD record
ord-88c18288742445bb835d7c2b3c5b0af9
Source dataset
uspto-grants-2015_11
Patent number
US09187477B2

Reaction notes

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