2-Pyrazinecarboxylic acid → N-(1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidin-3-yl)pyrazine-2-carboxamide

HRID 1410018Notes

Reaction equation

HRID 1410018 reaction equation
Cl.[NH2:2][CH:3]1[CH2:7][CH2:6][N:5]([C:8]2[N:9]=[C:10]([NH:17][C:18]3[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[C:20]([O:26][CH3:27])[CH:19]=3)[C:11]3[N:16]=[CH:15][S:14][C:12]=3[N:13]=2)[CH2:4]1.[N:28]1[CH:33]=[CH:32][N:31]=[CH:30][C:29]=1[C:34](O)=[O:35].CCN=C=NCCCN(C)C.CN1C=CN=C1>C(Cl)Cl>[CH3:27][O:26][C:20]1[CH:19]=[C:18]([NH:17][C:10]2[C:11]3[N:16]=[CH:15][S:14][C:12]=3[N:13]=[C:8]([N:5]3[CH2:6][CH2:7][CH:3]([NH:2][C:34]([C:29]4[CH:30]=[N:31][CH:32]=[CH:33][N:28]=4)=[O:35])[CH2:4]3)[N:9]=2)[CH:23]=[CH:22][C:21]=1[O:24][CH3:25]

Participants

6

Reactant 4

HCID 10472-Pyrazinecarboxylic acidHCID 13901-MethylimidazoleHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 683792715-(3-aminopyrrolidin-1-yl)-N-(3,4-dimethoxyphenyl)thiazolo[5,4-d]pyrimidin-7-amine hydrochloride

Product 1

HCID 66551739N-(1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidin-3-yl)pyrazine-2-carboxamideYield 73.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 5-(3-aminopyrrolidin-1-yl)-N-(3,4-dimethoxyphenyl)thiazolo[5,4-d]pyrimidin-7-amine hydrochloride (40 mg, 0.1 mmol), pyrazine-2-carboxylic acid (14 mg, 0.11 mmol), EDCI (38 mg, 0.2 mmol) and N-methylimidazole (25 mg, 0.3 mmol) in 3 mL of DCM was stirred at room temperature for 15 hours. The mixture was washed with water (5 mL), the organic layer was dried over Na2SO4. After filtration and concentration, the residue was purified by preparative TLC (Silica gel, 20 cm×20 cm, separated by EtOAc, eluted by DCM:MeOH=1:20, v/v) to give N-(1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidin-3-yl)pyrazine-2-carboxamide (35 mg, 73%) as white solid. 1H NMR (300 MHz, DMSO): δ 9.56 (s, 1H), 9.18 (s, 1H), 9.12 (d, 1H, J=7.8 Hz), 8.86 (d, 1H, J=2.4 Hz), 8.80 (s, 1H), 8.71 (s, 1H), 7.85 (s, 1H), 7.50-7.27 (m, 1H), 6.90 (d, 1H, J=8.4 Hz), 4.64-4.62 (m, 1H), 3.75-3.64 (m, 10H), 2.27-2.16 (m, 2H). LC-MS: 479 [M+H]+, 477 [M−H]−, tR=1.39 min. HPLC: 97.06% at 214 nm, 96.92% at 254 nm, tR=4.63 min.

Workup

  1. washThe mixture was washed with water (5 mL)
  2. dry with materialthe organic layer was dried over Na2SO4
  3. filtrationAfter filtration and concentration
  4. customthe residue was purified by preparative TLC (Silica gel, 20 cm×20 cm, separated by EtOAc, eluted by DCM:MeOH=1:20, v/v)

Sources & evidence

ORD record
ord-6dcb309198104244a3192d02132dac8b
Source dataset
uspto-grants-2014_12
Patent number
US08921383B2

Reaction notes

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