p-Toluenesulfonic acid → 5-(5-Amino-4-(piperidin-4-ylmethylamino)pyridin-2-ylamino)pyrazine-2-carbonitrile
Reaktionsgleichung
[NH2:1][C:2]1[C:3]([NH:17][CH2:18][CH:19]2[CH2:24][CH2:23][N:22](C(OC(C)(C)C)=O)[CH2:21][CH2:20]2)=[CH:4][C:5]([NH:8][C:9]2[CH:14]=[N:13][C:12]([C:15]#[N:16])=[CH:11][N:10]=2)=[N:6][CH:7]=1.CC1C=CC(S(O)(=O)=O)=CC=1>>[NH2:1][C:2]1[C:3]([NH:17][CH2:18][CH:19]2[CH2:24][CH2:23][NH:22][CH2:21][CH2:20]2)=[CH:4][C:5]([NH:8][C:9]2[N:10]=[CH:11][C:12]([C:15]#[N:16])=[N:13][CH:14]=2)=[N:6][CH:7]=1Komponenten
3
Versuchsvorschrift
Crude tert-butyl 4-((5-amino-2-(5-cyanopyrazin-2-ylamino)pyridin-4-ylamino)methyl)piperidine-1-carboxylate (50 mg) was loaded onto a MP-TsOH SPE cartridge, then eluted after 20 minutes with 2 M ammonia in methanol. The basic fractions were concentrated. Preparative HPLC gave 5-(5-amino-4-(piperidin-4-ylmethylamino)pyridin-2-ylamino)pyrazine-2-carbonitrile (2.36 mg, 2.4% over 3 steps).