Sodium borohydride → 6-Tert-butyl-8-fluoro-2-[3-(hydroxymethyl)-4-[1-methyl-5-[(2-methylpyrimidin-4-yl)amino]-6-oxo-3-pyridyl]-2-pyridyl]phthalazin-1-one

HRID 1185061Notes

Reaction equation

HRID 1185061 reaction equation
[C:1]([C:5]1[CH:6]=[C:7]2[C:12](=[C:13]([F:15])[CH:14]=1)[C:11](=[O:16])[N:10]([C:17]1[N:24]=[CH:23][CH:22]=[C:21]([C:25]3[CH:30]=[C:29]([NH:31][C:32]4[CH:37]=[CH:36][N:35]=[C:34]([CH3:38])[N:33]=4)[C:28](=[O:39])[N:27]([CH3:40])[CH:26]=3)[C:18]=1[CH:19]=[O:20])[N:9]=[CH:8]2)([CH3:4])([CH3:3])[CH3:2].[BH4-].[Na+]>CO>[C:1]([C:5]1[CH:6]=[C:7]2[C:12](=[C:13]([F:15])[CH:14]=1)[C:11](=[O:16])[N:10]([C:17]1[C:18]([CH2:19][OH:20])=[C:21]([C:25]3[CH:30]=[C:29]([NH:31][C:32]4[CH:37]=[CH:36][N:35]=[C:34]([CH3:38])[N:33]=4)[C:28](=[O:39])[N:27]([CH3:40])[CH:26]=3)[CH:22]=[CH:23][N:24]=1)[N:9]=[CH:8]2)([CH3:4])([CH3:2])[CH3:3]

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 866839342-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(1-methyl-5-(2-methylpyrimidin-4-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)nicotinaldehyde

Product 1

HCID 866839366-Tert-butyl-8-fluoro-2-[3-(hydroxymethyl)-4-[1-methyl-5-[(2-methylpyrimidin-4-yl)amino]-6-oxo-3-pyridyl]-2-pyridyl]phthalazin-1-oneYield 15.4%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

At 0° C., to a suspension of 2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(1-methyl-5-(2-methylpyrimidin-4-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)nicotinaldehyde 114c (130 mg, 0.24 mmol) in methanol (20 mL) was added sodium borohydride (27 mg, 0.72 mmol). The reaction mixture was stirred for 20 minutes and then quenched with water (10 mL). It was then concentrated under reduced pressure and the residue was extracted with dichloromethane (3×20 mL). The combined organic layer was dried and concentrated under reduced pressure. The residue was purified by reverse-phase prep-HPLC to afford 114 (20 mg, 15%) as a white solid. MS-ESI: [M+H]+ 542.3. 1H NMR (500 MHz, CDCl3) 8.97 (d, J=2.5 Hz, 1H), 8.71 (d, J=5.0 Hz, 1H, 8.36 (d, J=2.0 Hz, 1H), 8.28 (d, J=5.5 Hz, 1H), 8.09-8.06 (m, 1H), 7.86 (d, J=2.5 Hz, 1H), 7.60-7.56 (m, 3H), 6.61 (d, J=6.0 Hz, 1H), 4.54-4.43 (m, 2H), 4.16-4.13 (m, 1H), 3.75 (s, 3H), 2.62 (s, 3H), 1.46 (s, 9H).

Workup

  1. customquenched with water (10 mL)
  2. concentrationIt was then concentrated under reduced pressure
  3. extractionthe residue was extracted with dichloromethane (3×20 mL)
  4. customThe combined organic layer was dried
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by reverse-phase prep-HPLC

Sources & evidence

ORD record
ord-38e3a549ccc342ecadb8443112125f85
Source dataset
uspto-grants-2014_03
Patent number
US08669251B2

Reaction notes

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