反应详情

To a solution of tert-butyl 5-(aminomethyl)-4,6-dimethylpyridin-2-ylcarbamate (41.1 mg, 0.163 mmol) in THF (5 ml) were added collidine (0.022 ml, 0.163 mmol), 5-((1-oxoisoquinolin-2(1H)-yl)methyl)furan-2-carboxylic acid (44.0 mg, 0.163 mmol) and HATU (81.0 mg, 0.212 mmol). After stirring for 18 h at rt, all volatiles were removed in vacuo. The crude intermediate was purified by column chromatography (CombiFlash Companion, 12 g SiO2, heptane to EA), dissolved in DCM (1 ml) and TFA (1 ml), kept for 1 h at rt, and concentrated. Purification by preparative HPLC (Waters Sunfire Prep C18 OBD 5 um, 100×19 mm, A: H2O+0.1% TFA, B: MeCN+0.1% TFA, 6-36% B in 10 min, 30 ml/min, rt) afforded the title compound. 1H-NMR (DMSO-d6, 400 MHz): 2.37 (s, 3H), 4.28 (d, 2H), 5.23 (s, 2H), 6.45 (d, 1H), 6.62 (s, 1H), 6.68 (d, 1H), 7.06 (d, 1H), 7.49-7.59 (m, 4H), 7.65-7.76 (m, 2H), 8.21 (d, 1H), 8.52 (t, 1H), 13.33 (s, 1H). LCMS RtM=1.50 min, [M+H]+=403.3.

1. customall volatiles were removed in vacuo
2. customThe crude intermediate was purified by column chromatography (CombiFlash Companion, 12 g SiO2, heptane to EA)
3. dissolutiondissolved in DCM (1 ml)
4. waitTFA (1 ml), kept for 1 h at rt
5. concentrationconcentrated
6. customPurification by preparative HPLC (Waters Sunfire Prep C18 OBD 5 um, 100×19 mm
7. waitA: H2O+0.1% TFA, B: MeCN+0.1% TFA, 6-36% B in 10 min