Tetrahydro-4H-pyran-4-one → (R)-4-((R)-1-((3-methyl-6-(4-(4-(tetrahydro-2H-pyran-4-yl)piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-one

HRID 2209074Notes

Reaction equation

HRID 2209074 reaction equation
[CH3:1][N:2]1[C:6]2[C:7]([O:23][C@@H:24]([C@H:26]3[CH2:30][NH:29][C:28](=[O:31])[CH2:27]3)[CH3:25])=[N:8][C:9]([C:11]3[CH:16]=[CH:15][C:14]([N:17]4[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]4)=[CH:13][CH:12]=3)=[CH:10][C:5]=2[N:4]=[CH:3]1.O=[C:33]1[CH2:38][CH2:37][O:36][CH2:35][CH2:34]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl.C([O-])(O)=O.[Na+].CO>[CH3:1][N:2]1[C:6]2[C:7]([O:23][C@@H:24]([C@H:26]3[CH2:30][NH:29][C:28](=[O:31])[CH2:27]3)[CH3:25])=[N:8][C:9]([C:11]3[CH:12]=[CH:13][C:14]([N:17]4[CH2:18][CH2:19][N:20]([CH:33]5[CH2:38][CH2:37][O:36][CH2:35][CH2:34]5)[CH2:21][CH2:22]4)=[CH:15][CH:16]=3)=[CH:10][C:5]=2[N:4]=[CH:3]1

Participants

7

Reactant 3

HCID 121599Tetrahydro-4H-pyran-4-oneHCID 5049666Sodium triacetoxyborohydrideHCID 117844142(R)-4-((R)-1-(3-methyl-6-(4-(piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)pyrrolidin-2-one

Product 1

HCID 117843403(R)-4-((R)-1-((3-methyl-6-(4-(4-(tetrahydro-2H-pyran-4-yl)piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-oneYield 49.1%

Reagents, catalysts & solvents 3

HCID 111,2-DichloroethaneSolventHCID 887MethanolSolventHCID 516892Sodium BicarbonateSolvent

Procedure

A mixture of (R)-4-((R)-1-(3-methyl-6-(4-(piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)pyrrolidin-2-one 3A.13 (44.0 mg, 0.105 mmol), 4-oxotetrahydropyran (37.7 mg, 0.366 mmol) and sodium triacetoxyborohydride (100 mg, 0.471 mmol) in 1,2-dichloroethane (1.0 mL) was stirred at room temperature over the weekend. The reaction was diluted with saturated NaHCO3 (aq) and methanol. The mixture was concentrated to dryness and the residue was purified via prep HPLC (2-95% acetonitrile in water, 0.1% trifluoroacetic acid buffer) to isolate (R)-4-((R)-1-((3-methyl-6-(4-(4-(tetrahydro-2H-pyran-4-yl)piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-one 3.34 (26 mg) as its trifluoroacetic acid salt.

Workup

  1. concentrationThe mixture was concentrated to dryness
  2. customthe residue was purified via prep HPLC (2-95% acetonitrile in water, 0.1% trifluoroacetic acid buffer)

Sources & evidence

ORD record
ord-be260af3303641de9b602d571b2b6791
Source dataset
uspto-grants-2016_06
Patent number
US09376441B2

Reaction notes

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