反应详情

[(3R,4S)-4-Amino-1,1-dioxo-tetrahydrothiophen-3-yl]-[(S)-3-(4-fluorobenzyl)-piperidin-1-yl]-methanone (50 mg, 141 μmol) and [5-acetyl-4-methylthiazol-2-yl]-carbamic acid phenyl ester (43 mg, 155 μmol) were dissolved in N,N-dimethylformamide (1 mL) and treated with triethylamine (22 μL, 155 μmol). The mixture was stirred at room temperature for 94 h , and then concentrated. The residue was purified by flash column chromatography (4% methanol/dichloromethane containing 0.4% aqueous ammonium hydroxide) to provide a white solid (41 mg, 55%). 1H NMR (300 mHz, CD3OD) δ7.16 (m, 2H), 6.95 (m, 2H), 4.74 (m, 1H), 4.32 (m, 1H), 4.1-3.8 (m, 2H), 3.6-3.5 (m, 2H), 3.4-3.2 (m, 2H), 3.2-2.8 (m, 2H), 2.54 (s, 3H), 2.5 (m, 2H), 2.46+2.44 (2s, 3H), 1.75 (m, 3H), 1.43 (m, 1H), 1.23 (m, 1H), ESI MS: (M+H)+=537.4.

1. concentrationconcentrated
2. customThe residue was purified by flash column chromatography (4% methanol/dichloromethane containing 0.4% aqueous ammonium hydroxide)