Sodium borohydride → 2-{3'-Hydroxymethyl-1-methyl-5-[5-((R)-2-methyl-4-oxetan-3-yl-piperazin-1-yl)-pyridin-2-ylamino]-6-oxo-1,6-dihydro-[3,4']bipyridinyl-2'-yl}-6,7,8,9-tetrahydro-2H-pyrazino[1,2-a]indol-1-one

HRID 1021753Notes

Reaction equation

HRID 1021753 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][C@H:17]3[CH3:26])=[CH:12][N:11]=2)=[CH:5][C:4]([C:27]2[C:32]([CH:33]=[O:34])=[C:31]([N:35]3[CH:47]=[CH:46][N:38]4[C:39]5[CH2:40][CH2:41][CH2:42][CH2:43][C:44]=5[CH:45]=[C:37]4[C:36]3=[O:48])[N:30]=[CH:29][CH:28]=2)=[CH:3]1.[BH4-].[Na+]>CO>[OH:34][CH2:33][C:32]1[C:31]([N:35]2[CH:47]=[CH:46][N:38]3[C:39]4[CH2:40][CH2:41][CH2:42][CH2:43][C:44]=4[CH:45]=[C:37]3[C:36]2=[O:48])=[N:30][CH:29]=[CH:28][C:27]=1[C:4]1[CH:5]=[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][C@H:17]3[CH3:26])=[CH:12][N:11]=2)[C:7](=[O:8])[N:2]([CH3:1])[CH:3]=1

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 86684266(R)-4-(1-Methyl-5-(5-(2-methyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)-2-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)nicotinaldehyde

Product 1

HCID 895393892-{3'-Hydroxymethyl-1-methyl-5-[5-((R)-2-methyl-4-oxetan-3-yl-piperazin-1-yl)-pyridin-2-ylamino]-6-oxo-1,6-dihydro-[3,4']bipyridinyl-2'-yl}-6,7,8,9-tetrahydro-2H-pyrazino[1,2-a]indol-1-oneYield 39%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
25 °C

Procedure

A mixture of 151g (89 mg, 0.14 mmol), NaBH4 (22 mg, 0.60), and methanol (10 mL) was stirred at 25° C. for 1 h. The mixture was quenched with water (8 mL) and concentrated under reduced pressure. The residue was extracted with dichloromethane (2×10 mL). The combined dichloromethane extract was concentrated under reduced pressure and the residue was purified with reverse-phase prep-HPLC to afford 151 (35 mg, 39%). MS-ESI: [M+H]+649. 1H NMR (500 MHz, CDCl3) δ 8.65 (d, J=2.0 Hz, 1H), 8.55 (d, J=5.0 Hz, 1H), 8.46 (s, 1H), 7.83 (d, J=2.5 Hz, 1H), 7.50-7.48 (m, 2H), 7.38-7.36 (m, 1H), 7.26-7.24 (m, 2H), 6.83-6.80 (m, 2H), 4.98 (bs, 1H), 4.57-4.54 (m, 2H), 4.48-4.33 (m, 4H), 3.67-3.66 (m, 1H), 3.60 (s, 3H), 3.39-3.38 (m, 2H), 3.09-3.08 (m, 1H), 2.96-2.94 (m, 1H), 2.76-2.74 (m, 2H), 2.64-2.62 (m, 2H), 2.36-2.31 (m, 2H), 2.20-2.17 (t, J=7.5 Hz, 1H), 1.88-1.86 (m, 2H), 1.75-1.74 (m, 2H), 0.93 (d, J=6.5 Hz, 3H).

Workup

  1. customThe mixture was quenched with water (8 mL)
  2. concentrationconcentrated under reduced pressure
  3. extractionThe residue was extracted with dichloromethane (2×10 mL)
  4. extractionThe combined dichloromethane extract
  5. concentrationwas concentrated under reduced pressure
  6. customthe residue was purified with reverse-phase prep-HPLC

Sources & evidence

ORD record
ord-d48cea64f8044fb28c9dbc9b63418f73
Source dataset
uspto-grants-2014_05
Patent number
US08716274B2

Reaction notes

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