Sodium borohydride → 2-(4-(Hydroxymethyl)-5-(1-methyl-5-(5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)-6,7,8,9-tetrahydropyrazino[1,2-a]indol-1(2H)-one

HRID 1411567Notes

Reaction equation

HRID 1411567 reaction equation
[CH3:1][N:2]1[C:7](=[O:8])[C:6]([NH:9][C:10]2[CH:15]=[CH:14][C:13]([N:16]3[CH2:21][CH2:20][N:19]([CH:22]4[CH2:25][O:24][CH2:23]4)[CH2:18][CH2:17]3)=[CH:12][N:11]=2)=[CH:5][C:4]([C:26]2[CH:33]=[N:32][CH:31]=[C:30]([N:34]3[CH:46]=[CH:45][N:37]4[C:38]5[CH2:39][CH2:40][CH2:41][CH2:42][C:43]=5[CH:44]=[C:36]4[C:35]3=[O:47])[C:27]=2[CH:28]=[O:29])=[CH:3]1.[BH4-].[Na+]>CO>[OH:29][CH2:28][C:27]1[C:26]([C:4]2[CH:5]=[C:6]([NH:9][C:10]3[CH:15]=[CH:14][C:13]([N:16]4[CH2:17][CH2:18][N:19]([CH:22]5[CH2:25][O:24][CH2:23]5)[CH2:20][CH2:21]4)=[CH:12][N:11]=3)[C:7](=[O:8])[N:2]([CH3:1])[CH:3]=2)=[CH:33][N:32]=[CH:31][C:30]=1[N:34]1[CH:46]=[CH:45][N:37]2[C:38]3[CH2:39][CH2:40][CH2:41][CH2:42][C:43]=3[CH:44]=[C:36]2[C:35]1=[O:47]

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 866842243-(1-Methyl-5-(5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)-5-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)isonicotinaldehyde

Product 1

HCID 866842252-(4-(Hydroxymethyl)-5-(1-methyl-5-(5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)-6,7,8,9-tetrahydropyrazino[1,2-a]indol-1(2H)-oneYield 37%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a suspension of 126b (76 mg, 0.12 mmol) at 0° C. in methanol (4 mL) was added sodium borohydride (20 mg, 0.7 mmol) and the mixture was stirred for 30 minutes. Then the reaction mixture was quenched with water (1.0 mL) and concentrated. The residue was purified by reverse-phase prep-HPLC to afford 126 (28 mg, 37%). LCMS: [M+H]+ 635. 1H NMR (500 MHz, DMSO) δ 8.61 (d, J=2.5, 1H), 8.59 (s, 1H), 8.50 (s, 1H), 8.43 (s, 1H), 7.86 (d, J=3.0, 1H), 7.38-7.36 (m, 2H), 7.27-7.22 (m, 2H), 6.82-6.78 (m, 2H), 5.18-5.11 (m, 1H), 4.55 (t, J=6.0, 2H), 4.45 (t, J=6.0, 2H), 4.41-4.29 (m, 2H), 3.60 (s, 3H), 3.44-3.42 (m, 1H), 3.06 (t, J=4.5, 4H), 2.75-2.73 (m, 2H), 2.62-2.60 (m, 2H), 2.38 (t, J=4.5, 4H), 1.86-1.75 (m, 4H).

Workup

  1. customThen the reaction mixture was quenched with water (1.0 mL)
  2. concentrationconcentrated
  3. customThe residue was purified by reverse-phase prep-HPLC

Sources & evidence

ORD record
ord-0ecd8abb89a745bab3e1cad895b2d71b
Source dataset
uspto-grants-2014_12
Patent number
US08921353B2

Reaction notes

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