反应详情

A yellow solution of (S)-5-(4-(but-3-en-1-yl)-4-methylpiperidin-1-yl)-6-(1-(tert-butoxy)-2-methoxy-2-oxoethyl)-7-methylimidazo[1,2-a]pyridine-2-carboxylic acid sodium salt (40 mg, 0.081 mmol, 1 equiv), 2-allyloxybenzylamine (18 mg, 0.113 mmol, 1.4 equiv), DIPEA (0.042 mL, 0.243 mmol, 3 equiv), and HATU (43 mg, 0.113 mmol, 1.4 equiv) in DMF (0.81 mL) was stirred 2 h. The reaction was then diluted with EtOAc, washed with saturated aqueous NaHCO3, dried (Na2SO4), and concentrated in vacuo. The crude product was purified by flash column chromatography (0-100% EtOAc/hex) to provide the product (30 mg, 60%) as a colorless oil. 1H NMR (400 MHz, CDCl3) [note: appears to be at least two rotamers, only major rotamer transcribed] δ 8.21 (s, 1H), 7.81 (t, J=6.1 Hz, 1H), 7.26-7.16 (m, 2H), 6.97-6.85 (m, 2H), 6.19-6.06 (m, 2H), 5.93-5.82 (m, 1H), 5.47 (dq, J=17.3, 1.5 Hz, 1H), 5.31 (dq, J=10.5, 1.4 Hz, 1H), 5.14-4.95 (m, 2H), 4.72 (d, J=6.0 Hz, 2H), 4.63 (dt, J=5.0, 1.5 Hz, 2H), 3.70 (s, 3H), 3.61-3.48 (m, 2H), 3.07 (d, J=13.8 Hz, 1H), 2.85 (d, J=12.0 Hz, 1H), 2.45 (d, J=1.0 Hz, 3H), 2.17-2.07 (m, 2H), 1.71-1.40 (m, 6H), 1.24 (s, 9H), 1.13 (s, 3H); LCMS (ESI, M+1): 617.4.

1. washwashed with saturated aqueous NaHCO3
2. dry with materialdried (Na2SO4)
3. concentrationconcentrated in vacuo
4. customThe crude product was purified by flash column chromatography (0-100% EtOAc/hex)