反应详情

2′-Acetylamino-4′-methyl-[4,5′]bithiazolyl-2-carbonyl chloride, prepared as in Step I of Example 13, described above, (200 mg, 0.66 mmol, 1 eq.), is dissolved in THF (8 ml) and DCM (4 ml). 4-Piperidineethanol (Aldrich)(85.6 mg; 0.66 mmol; 1 eq.) and triethylamine (0.19 ml; 1.33 mmol; 2 eq.) are added and the mixture is stirred overnight at rt. Solvents are evaporated and the crude product is crystallized in MeOH, affording Compound (28) as a brown solid (117.2 mg; 43%). 1H NMR (DMSO-d6, 300 MHz) δ 1.05-1.30 (m, 2H), 1.38 (m, 2H), 1.75 (m, 2H), 2.13 (s, 3H), 2.48 (s, 3H), 2.85 (m, 1H), 3.22 (m, 1H), 3.45 (m, 2H), 4.38 (t, J=6 Hz, 1H), 4.42 (m, 1H), 5.15 (m, 1H), 7.97 (s, 1H), 12.16 (s, 1H). M− (ESI): 393.21; M+ (ESI): 395.20. HPLC (method A), Rt: 2.69 min (purity: 95.7%).

1. customSolvents are evaporated
2. customthe crude product is crystallized in MeOH