2-(4-(4-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)-N-(3-(1, 1,1-trifluoro-2-methylpropan-2-yl)isoxazol-5-yl)acetamide → 2-(4-(4-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)-N-(3-(1, 1,1-trifluoro-2-methylpropan-2-yl)isoxazol-5-yl)acetamide

HRID 1050109Notes

Reaction equation

[CH2:1]([O:3][C:4]1[CH:9]=[C:8]([O:10]CC2C=CC(OC)=CC=2)[N:7]=[CH:6][C:5]=1[C:20]1[CH:25]=[CH:24][C:23]([CH2:26][C:27]([NH:29][C:30]2[O:34][N:33]=[C:32]([C:35]([CH3:41])([CH3:40])[C:36]([F:39])([F:38])[F:37])[CH:31]=2)=[O:28])=[C:22]([F:42])[CH:21]=1)[CH3:2]>C(O)(C(F)(F)F)=O>[CH2:1]([O:3][C:4]1[C:5]([C:20]2[CH:25]=[CH:24][C:23]([CH2:26][C:27]([NH:29][C:30]3[O:34][N:33]=[C:32]([C:35]([CH3:41])([CH3:40])[C:36]([F:38])([F:39])[F:37])[CH:31]=3)=[O:28])=[C:22]([F:42])[CH:21]=2)=[CH:6][NH:7][C:8](=[O:10])[CH:9]=1)[CH3:2]

Participants

Conditions

Temperature: 25 °C

Procedure

A mixture of 2-(4-(4-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)-N-(3-(1,1,1-trifluoro-2-methylpropan-2-yl)isoxazol-5-yl)acetamide (70 mg, 0.119 mmol) and TFA (10% in DCM, 50 mL) was stirred at 25° C. for 2 h. The mixture was concentrated. The crude material was purified by preparative HPLC (MeCN/H2O as eluants, basic condition) to give a white solid of 2-(4-(4-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)-N-(3-(1,1,1-trifluoro-2-methylpropan-2-yl)isoxazol-5-yl)acetamide (24.61 mg, 0.051 mmol, 43% yield): 1H NMR (400 MHz, CD3OD) δ 7.39-7.32 (m, 1H), 7.26-7.18 (m, 1H), 6.37 (s, 1H), 5.99 (s, 1H), 4.10 (q, J=6.8 Hz, 2H), 3.82 (s, 2H), 1.53 (s, 6H), 1.37 (t, J=7.2 Hz, 3H); ES-LCMS m/z: 468 (M+H).

Workup

concentrationThe mixture was concentrated
customThe crude material was purified by preparative HPLC (MeCN/H2O as eluants, basic condition)

Sources & evidence

ORD record: ord-d166611fd7aa42b495ed29fa72db97bb
Source dataset: uspto-grants-2016_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09382238B2

Reaction notes

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