Acetic Acid → N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

HRID 880273Notes

Reaction equation

HRID 880273 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:22]=[CH:23][CH:24]=1)[C:5]([NH:7][CH2:8][CH: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].[O:25]1[CH2:30][CH2:29][C:28](=O)[CH2:27][CH2:26]1.CC(O)=O.[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][CH: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:28]2[CH2:29][CH2:30][O:25][CH2:26][CH2:27]2)[CH:3]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 121599Tetrahydro-4H-pyran-4-oneHCID 5003444Sodium cyanoborohydrideHCID 902415853-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide

Product 1

HCID 76903262N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamideYield 48.9%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide (325 mg, 1.0 mmol) in MeOH (10 mL) was added dihydro-2H-pyran-4(3H)-one (88 mg, 1.0 mmol) and AcOH (0.05 mL). The mixture was stirred at 25° C. for 2 h. NaBH3CN (630 mg, 10.0 mmol) was added, and the resulting mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was dissolved in water, extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (200 mg, Yield 48.9%). 1H NMR (CD3OD, 400 MHz): δ 8.44 (brs, 1H), 7.32-7.20 (m, 3H), 7.20-7.13 (m, 2H), 7.13-7.09 (m, 1H), 7.08-7.00 (m, 1H), 6.86-6.77 (m, 1H), 4.39 (s, 2H), 4.35-4.25 (m, 1H), 4.03-3.89 (m, 2H), 3.63-3.40 (m, 7H), 3.31-3.07 (m, 4H), 2.06-1.92 (m, 2H), 1.55-1.40 (m, 2H). LCMS (m/z): 410.2 (M+1).

Workup

  1. stirringthe resulting mixture was stirred at 25° C. for 16 h
  2. concentrationThe reaction solution was concentrated
  3. dissolutionthe residue was dissolved in water
  4. extractionextracted with EA
  5. concentrationThe organic layer was concentrated
  6. customthe residue was purified by prep-HPLC

Sources & evidence

ORD record
ord-878d625c25b240e3b46b06d32b598efe
Source dataset
uspto-grants-2015_03
Patent number
US08993555B2

Reaction notes

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