Acetic Acid → HCID 76901355, compound

HRID 2202061Notes

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].[CH3:25][C:26]1([CH3:33])[CH2:31][C:30](=O)[CH2:29][CH2:28][O:27]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:30]2[CH2:29][CH2:28][O:27][C:26]([CH3:33])([CH3:25])[CH2:31]2)[CH:3]=1

Participants

Conditions

Temperature: 22 °C

Procedure

A solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide (130 mg, 0.4 mmol), 2,2-dimethyldihydro-2H-pyran-4(3H)-one (52 mg, 0.4 mmol) and AcOH (0.1 mL) in MeOH (10 mL). The mixture was stirred at 22° C. for 12 h, then NaBH3CN (76 mg, 1.2 mmol) was added and the resulting mixture was stirred at 22° C. for 2 h. The reaction mixture was concentrated and quenched with water. The aqueous mixture was extracted with DCM, the combined organic layers were concentrated and the residue was purified by prep-HPLC to give the title compound (5.5 mg, Yield 3.1%). 1H NMR (CD3OD, 400 MHz): δ 8.42 (brs, 1H) 7.00-7.33 (m, 7H) 6.84 (d, J=7.8 Hz, 1H) 4.21-4.41 (m, 3H) 3.40-3.92 (m, 8H) 3.11-3.20 (m, 3H) 1.91-2.07 (m, 2H) 1.18-1.44 (m, 8H). LCMS (m/z): 438.3 (M+1).

Workup

stirringthe resulting mixture was stirred at 22° C. for 2 h
concentrationThe reaction mixture was concentrated
customquenched with water
extractionThe aqueous mixture was extracted with DCM
concentrationthe combined organic layers were concentrated
customthe residue was purified by prep-HPLC

Sources & evidence

ORD record: ord-5a419cef38df4a7e8f676043932c7ea7
Source dataset: uspto-grants-2016_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09365519B2

Reaction notes

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