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 407647Notes

Reaction equation

HRID 407647 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-4c1158680585439882f3a66964a4f0cd
Source dataset
uspto-grants-2014_06
Patent number
US08754077B2

Reaction notes

Loading…