Sodium triacetoxyborohydride → HCID 59606059, compound

HRID 1923075Notes

Reaction equation

HRID 1923075 reaction equation
[CH3:1][N:2]1[C:10]([CH:11]=O)=[N:9][C:8]2[C:3]1=[N:4][C:5]([N:19]1[C:23]3[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=3[N:21]=[C:20]1[CH3:28])=[N:6][C:7]=2[N:13]1[CH2:18][CH2:17][O:16][CH2:15][CH2:14]1.[CH3:29][S:30]([CH2:33][CH2:34][N:35]1[CH2:40][CH2:39][NH:38][CH2:37][C:36]1([CH3:42])[CH3:41])(=[O:32])=[O:31].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[CH3:41][C:36]1([CH3:42])[N:35]([CH2:34][CH2:33][S:30]([CH3:29])(=[O:31])=[O:32])[CH2:40][CH2:39][N:38]([CH2:11][C:10]2[N:2]([CH3:1])[C:3]3[C:8]([N:9]=2)=[C:7]([N:13]2[CH2:14][CH2:15][O:16][CH2:17][CH2:18]2)[N:6]=[C:5]([N:19]2[C:23]4[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=4[N:21]=[C:20]2[CH3:28])[N:4]=3)[CH2:37]1

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 596054202-(2-methylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine-8-carbaldehydeHCID 596060882,2-Dimethyl-1-(2-(methylsulfonyl)ethyl)piperazine

Product 1

HCID 59606059HCID 59606059, compound

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A mixture of 9-methyl-2-(2-methylbenzoimidazol-1-yl)-6-morpholin-4-yl-9H-purine-8-carbaldehyde (80 mg, 0.21 mmol), 1-(2-methanesulfonylethyl)-2,2-dimethylpiperazine (56 mg, 0.25 mmol) and 4 Å powdered molecular sieves (100 mg) in DCE (5 mL) was stirred at room temperature for 4 h before the addition of sodium triacetoxyborohydride (90 mg, 0.42 mmol). The reaction mixture was stirred for 64 h then filtered through celite, washing with DCM. The organic phase was washed with brine (×1) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-15%). The resulting oil was loaded onto an Isolute® SCX-2 cartridge which was washed with MeOH/DCM and the product eluted with 2M NH3/MeOH affording 330 as a white solid (70 mg, 58%). LCMS (Method G): RT 6.62 min [M+H]+ 582.3. 1H NMR (CDCl3, 400 MHz): δ 8.12-8.07 (m, 1 H); 7.74-7.70 (m, 1 H); 7.29-7.25 (m, 2 H); 4.35 (m, 4 H); 3.91-3.83 (m, 7 H); 3.69 (s, 2 H); 3.11 (m, 2 H); 3.06 (s, 3 H); 2.95 (s, 3 H); 2.63 (m, 2 H); 2.54 (m, 2 H); 2.30 (s, 2 H); 1.78 (m, 2 H) and 1.10 (s, 6 H)

Workup

  1. filtrationthen filtered through celite
  2. washwashing with DCM
  3. washThe organic phase was washed with brine (×1)
  4. concentrationconcentrated in vacuo
  5. customThe resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-15%)
  6. washwas washed with MeOH/DCM
  7. washthe product eluted with 2M NH3/MeOH affording 330 as a white solid (70 mg, 58%)
  8. customRT 6.62 min [M+H]+ 582.3

Sources & evidence

ORD record
ord-c858f33ce4be4c4f9e2adc7ec8103560
Source dataset
uspto-grants-2012_05
Patent number
US08173650B2

Reaction notes

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