Acetic Acid → HCID 90241843, compound

HRID 880301Notes

Reaction equation

HRID 880301 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:22]=[CH:23][CH:24]=1)[C:5]([NH:7][CH2:8][C@H:9]([OH:21])[CH2:10][N:11]1[CH2:20][CH2:19][C:18]2[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH2:12]1)=[O:6].CC(O)=O.[O:29]1[CH2:34][CH2:33][C:32](=O)[CH2:31][CH2:30]1.[BH3-]C#N.[Na+]>CO>[CH2:12]1[C:13]2[C:18](=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH2:19][CH2:20][N:11]1[CH2:10][C@@H:9]([OH:21])[CH2:8][NH:7][C:5](=[O:6])[C:4]1[CH:22]=[CH:23][CH:24]=[C:2]([NH:1][CH:32]2[CH2:33][CH2:34][O:29][CH2:30][CH2:31]2)[CH:3]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 121599Tetrahydro-4H-pyran-4-oneHCID 5003444Sodium cyanoborohydrideHCID 90241876HCID 90241876, compound

Product 1

HCID 90241843HCID 90241843, compoundYield 31.8%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of (S)-3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxylpropyl)benzamide (400 mg, 1.23 mmol) in MeOH (8 mL) was added AcOH (0.05 mL) and dihydro-2H-pyran-4(3H)-one (123 mg, 1.23 mmol). The mixture was stirred at 25° C. for 2 h. NaBH3CN (387 mg, 6.15 mmol) was added and the resulting mixture was stirred at 25° C. for 2 h. The reaction solution was concentrated, and the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (160 mg, Yield 31.8%). 1H NMR (CD3OD, 400 MHz): δ 7.94-7.76 (m, 2H), 7.63-7.56 (m, 1H), 7.56-7.49 (m, 1H), 7.32-7.24 (m, 3H), 7.21-7.15 (m, 1H), 4.71-4.55 (m, 1H), 4.52-4.28 (m, 2H), 4.05-3.95 (m, 2H), 3.92-3.70 (m, 2H), 3.62-3.46 (m, 3H), 3.46-3.33 (m, 4H), 3.28-3.02 (m, 2H), 1.99-1.85 (m, 2H), 1.82-1.66 (m, 2H). LCMS (m/z): 410.2 (M+1).

Workup

  1. stirringthe resulting mixture was stirred at 25° C. for 2 h
  2. concentrationThe reaction solution was concentrated
  3. washthe residue was washed with water
  4. extractionextracted with EA
  5. concentrationThe organic layer was concentrated
  6. customthe residue was purified by prep-HPLC

Sources & evidence

ORD record
ord-2306714545fa4e71b3f0e0b39393738f
Source dataset
uspto-grants-2015_03
Patent number
US08993555B2

Reaction notes

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