Lithium Hydroxide → 2-[3-(hydroxymethyl)-4-[5-(1H-imidazo[4,5-b]pyridin-5-ylamino)-1-methyl-6-oxo-3-pyridyl]-2-pyridyl]-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1-one

HRID 1021968Notes

Reaction equation

HRID 1021968 reaction equation
C([O:4][CH2:5][C:6]1[C:7]([N:30]2[CH2:42][CH2:41][N:33]3[C:34]4[CH2:35][CH2:36][CH2:37][CH2:38][C:39]=4[CH:40]=[C:32]3[C:31]2=[O:43])=[N:8][CH:9]=[CH:10][C:11]=1[C:12]1[CH:17]=[C:16]([NH:18][C:19]2[N:24]=[C:23]3[N:25]=[CH:26][NH:27][C:22]3=[CH:21][CH:20]=2)[C:15](=[O:28])[N:14]([CH3:29])[CH:13]=1)(=O)C.[OH-].[Li+]>C(O)(C)C.C1COCC1.O>[OH:4][CH2:5][C:6]1[C:7]([N:30]2[CH2:42][CH2:41][N:33]3[C:34]4[CH2:35][CH2:36][CH2:37][CH2:38][C:39]=4[CH:40]=[C:32]3[C:31]2=[O:43])=[N:8][CH:9]=[CH:10][C:11]=1[C:12]1[CH:17]=[C:16]([NH:18][C:19]2[N:24]=[C:23]3[N:25]=[CH:26][NH:27][C:22]3=[CH:21][CH:20]=2)[C:15](=[O:28])[N:14]([CH3:29])[CH:13]=1

Participants

5

Reactant 2

HCID 3939Lithium HydroxideHCID 86684401(4-(5-(1H-Imidazo[4,5-b]pyridin-5-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-3-yl)methyl Acetate

Product 1

HCID 866844022-[3-(hydroxymethyl)-4-[5-(1H-imidazo[4,5-b]pyridin-5-ylamino)-1-methyl-6-oxo-3-pyridyl]-2-pyridyl]-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1-oneYield 40%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 22597222Tetrahydrofuran 2-propanolSolvent

Procedure

A mixture of 217b (40 mg, 0.070 mmol) and lithium hydroxide (26 mg, 0.70 mmol) in i-propanol/THF (1:1, 4 mL) and water (1 mL) was stirred at room temperature for 1 h. The mixture was evaporated in vacuo and the residue was diluted with water and ethyl acetate. The water phase was separated and extracted with ethyl acetate (2×10 mL). The combined ethyl acetate extract was concentrated under reduced pressure and the residue was purified by reverse-phase prep-HPLC to afford 217 (15 mg, 40%) as a white solid. MS-ESI: [M+H]+ 537.3. 1H NMR (500 MHz, DMSO-d6) δ 12.62 (s, 1H), 8.91-8.64 (m, 2H), 8.52 (d, J=4.5 Hz, 1H), 8.19-8.06 (m, 1H), 7.89-7.79 (m, 1H), 7.57-7.53 (m, 1H), 7.43-7.40 (m, 1H), 7.22 (d, J=8.5 Hz, 1H), 6.59 (s, 1H), 5.06-4.96 (m, 1H), 4.5-4.40 (m, 2H), 4.26-4.11 (m, 3H), 3.88-3.85 (m, 1H), 3.62 (s, 3H), 2.62-2.54 (m, 2H), 2.50-2.48 (m, 2H), 1.81-1.79 (m, 2H), 1.71-1.67 (m, 2H).

Workup

  1. customThe mixture was evaporated in vacuo
  2. additionthe residue was diluted with water and ethyl acetate
  3. customThe water phase was separated
  4. extractionextracted with ethyl acetate (2×10 mL)
  5. extractionThe combined ethyl acetate extract
  6. concentrationwas concentrated under reduced pressure
  7. customthe residue was purified by reverse-phase prep-HPLC

Sources & evidence

ORD record
ord-a8078c8abca04cf59439050b7709d812
Source dataset
uspto-grants-2014_05
Patent number
US08716274B2

Reaction notes

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