1-Methylimidazole → 3-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)-N-(4-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)phenyl)benzamide

HRID 1410025Notes

Reaction equation

HRID 1410025 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([NH:11][C:12]2[C:13]3[N:29]=[CH:28][S:27][C:14]=3[N:15]=[C:16]([C:18]3[CH:19]=[C:20]([CH:24]=[CH:25][CH:26]=3)[C:21]([OH:23])=O)[N:17]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH3:10].Cl.[NH2:31][C:32]1[CH:37]=[CH:36][C:35]([C:38]2[NH:42][C:41](=[O:43])[O:40][N:39]=2)=[CH:34][CH:33]=1.CCN=C=NCCCN(C)C.CN1C=CN=C1>C(Cl)Cl>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([NH:11][C:12]2[C:13]3[N:29]=[CH:28][S:27][C:14]=3[N:15]=[C:16]([C:18]3[CH:19]=[C:20]([CH:24]=[CH:25][CH:26]=3)[C:21]([NH:31][C:32]3[CH:33]=[CH:34][C:35]([C:38]4[NH:42][C:41](=[O:43])[O:40][N:39]=4)=[CH:36][CH:37]=3)=[O:23])[N:17]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH3:10]

Participants

6

Reactant 4

HCID 13901-MethylimidazoleHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 665513433-(7-(3,4-Dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)benzoic acidHCID 1357413233-(4-Aminophenyl)-4,5-dihydro-1,2,4-oxadiazol-5-one hydrochloride

Product 1

HCID 1362656173-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)-N-(4-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)phenyl)benzamideYield 26.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a mixture of 3-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)benzoic acid (40 mg, 0.1 mmol) and 3-(4-aminophenyl)-1,2,4-oxadiazol-5(4H)-one hydrochloride (22 mg, 0.1 mmol) in 3 mL of DCM was added EDCI (58 mg, 0.3 mmol) followed by N-methylimidazole (25 mg, 0.3 mmol). The mixture was stirred at room temperature for 16 hours. The solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel eluting with EtOAc to give 3-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)-N-(4-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)phenyl)benzamide (15 mg, 26%) as white solid. 1H NMR (300 MHz, DMSO): δ 10.82 (s, 1H), 10.22 (s, 1H), 9.43 (s, 1H), 8.98 (s, 1H), 8.64 (d, 1H, J=8.1 Hz), 8.12-8.02 (m, 3H), 7.87-7.54 (m, 5H), 7.01 (d, 1H, J=9.0 Hz), 3.82 (s, 3H), 3.76 (s, 3H). LC-MS: 568 [M+H]+, tR=1.54 min. HPLC: 97.16% at 214 nm, 96.94% at 254 nm, tR=2.86 min.

Workup

  1. customThe solvent was removed under reduced pressure
  2. customThe residue was purified by column chromatography on silica gel eluting with EtOAc

Sources & evidence

ORD record
ord-57510a5a53e445ec8da8b2421982c36a
Source dataset
uspto-grants-2014_12
Patent number
US08921383B2

Reaction notes

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