反应详情

温度

40 °C

(2R)-2-[N-(4-Chlorobenzene-sulfonyl)-N-(4-aminobenzyl)amino]-4-methyl-pentanoic acid amide (Example 48, 0.10 g, 0.22 mmol) was dissolved in DMF (5 mL). To this solution was added iodomethane (62 mg, 0.44 mmol), and cesium carbonate (220 mg, 0.66 mmol). The reaction was then stirred at 40° C. for 18 h. The reaction was poured into EtOAc and water. The organic was collected, dried over MgSO4, and concentrated to an oily residue. The residue was further purified (Biotage 40S, loaded in CH2Cl2, eluted in 25% EtOAc/hexanes) to yield a yellow powder (15 mg, 16%). MS (ESI), (M+H)+ 438.1; 1H NMR (DMSO-d6, 500 MHz) δ 7.74 (dd, 2H, J=1.9, 6.7), 7.54 (dd, 2H, J=1.9, 6.8), 7.43 (s, 1H), 7.16 (d, 2H, J=8.6), 7.01 (s, 1H), 6.61 (d, 2H, J=8.8), 4.59 (q, 2H, J=16, 25), 4.34 (dd, 1H, J=5.0, 9.3), 2.85 (s, 6H), 1.27-1.47 (m, 3H), 0.80 (d, 3H, J=5.9), 0.52 (d, 3H, J=6.1).

1. customThe organic was collected
2. dry with materialdried over MgSO4
3. concentrationconcentrated to an oily residue
4. customThe residue was further purified
5. wash(Biotage 40S, loaded in CH2Cl2, eluted in 25% EtOAc/hexanes)