Sodium borohydride → 10-fluoro-2-[3-(hydroxymethyl)-4-[1-methyl-5-[(5-methyl-6,7-dihydro-4H-thiazolo[5,4-c]pyridin-2-yl)amino]-6-oxo-3-pyridyl]-2-pyridyl]-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1-one

HRID 1021982Notes

Reaction equation

HRID 1021982 reaction equation
[F:1][C:2]1[C:10]2[CH2:9][CH2:8][CH2:7][CH2:6][C:5]=2[N:4]2[CH2:11][CH2:12][N:13]([C:16]3[N:23]=[CH:22][CH:21]=[C:20]([C:24]4[CH:29]=[C:28]([NH:30][C:31]5[S:32][C:33]6[CH2:34][N:35]([CH3:40])[CH2:36][CH2:37][C:38]=6[N:39]=5)[C:27](=[O:41])[N:26]([CH3:42])[CH:25]=4)[C:17]=3[CH:18]=[O:19])[C:14](=[O:15])[C:3]=12.[BH4-].[Na+]>CO>[F:1][C:2]1[C:10]2[CH2:9][CH2:8][CH2:7][CH2:6][C:5]=2[N:4]2[CH2:11][CH2:12][N:13]([C:16]3[C:17]([CH2:18][OH:19])=[C:20]([C:24]4[CH:29]=[C:28]([NH:30][C:31]5[S:32][C:33]6[CH2:34][N:35]([CH3:40])[CH2:36][CH2:37][C:38]=6[N:39]=5)[C:27](=[O:41])[N:26]([CH3:42])[CH:25]=4)[CH:21]=[CH:22][N:23]=3)[C:14](=[O:15])[C:3]=12

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 866844142-(10-Fluoro-1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)-4-(1-methyl-5-(5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)nicotinaldehyde

Product 1

HCID 7155809010-fluoro-2-[3-(hydroxymethyl)-4-[1-methyl-5-[(5-methyl-6,7-dihydro-4H-thiazolo[5,4-c]pyridin-2-yl)amino]-6-oxo-3-pyridyl]-2-pyridyl]-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1-oneYield 35.2%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Compound 223a (160 mg, 0.27 mmol) was dissolved in methanol (30 mL), followed by addition of NaBH4 (31 mg, 082 mmol) at 0° C. The reaction mixture was stirred for 30 min and then quenched with water (10 mL). It was concentrated under reduced pressure and the residue was extracted with dichloromethane (3×30 mL). The combined organic phase was concentrated under reduced pressure and the residual was purified by reverse-phase prep-HPLC to afford 223 (56 mg, 35%) as a white solid. MS-ESI: [M+H]+ 590.2. 1H NMR (500 MHz, DMSO-d6): δ 9.92 (s, 1H), 8.64 (d, J=2.5 Hz, 1H), 8.48 (d, J=5.5 Hz, 1H), 7.56 (d, J=2.0 Hz, 1H), 7.34 (d, J=5.0 Hz, 1H), 4.93 (t, J=5.5 Hz, 1H), 4.46-4.41 (m, 2H), 4.19-4.17 (m, 2H), 4.08-4.03 (m, 1H), 3.88-3.85 (m, 1H), 3.60 (s, 3H), 3.42 (s, 2H), 2.63-2.58 (m, 6H), 2.41 (s, 3H), 2.34 (s, 2H), 1.78-1.76 (m, 2H), 1.68-1.66 (m, 2H).

Workup

  1. customquenched with water (10 mL)
  2. concentrationIt was concentrated under reduced pressure
  3. extractionthe residue was extracted with dichloromethane (3×30 mL)
  4. concentrationThe combined organic phase was concentrated under reduced pressure
  5. customthe residual was purified by reverse-phase prep-HPLC

Sources & evidence

ORD record
ord-8d3166e8d40347ce80f69d4ca5708159
Source dataset
uspto-grants-2014_05
Patent number
US08716274B2

Reaction notes

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