反应详情

温度

60 °C

To ethyl 2-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-5-(3-phenoxypropyl)thiazole-4-carboxylate in 1:1 MeOH and THF (2 mL) was added LiOH (5 mg, 0.21 mmol) dissolved in water (2 mL). The reaction mixture was stirred at 60° C. for 1 hour. The reaction mixture was concentrated under reduced pressure. To this crude material was added water and MeOH and allowed to sit overnight. The resulting precipitate was filtered and washed with water. To this solid was added water and acetonitrile and lyophilized to give 12 mg of the desired product 2-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-5-(3-phenoxypropyl)thiazole-4-carboxylic acid (24). 1H NMR (400 MHz, DMSO) δ 8.62 (s, 1H), 7.60 (s, 2H), 7.51-7.33 (m, 3H), 7.27 (t, J=8.0, 3H), 7.17 (t, J=7.7, 2H), 6.92 (dd, J=7.5, 14.2, 5H), 4.03 (t, J=6.4, 3H), 3.95 (s, 2H), 3.42 (d, J=7.8, 4H), 2.78 (s, 2H), 2.10 (s, 3H), 1.88 (d, J=9.5, 3H).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. additionTo this crude material was added water and MeOH
3. waitto sit overnight
4. filtrationThe resulting precipitate was filtered
5. washwashed with water
6. additionTo this solid was added water and acetonitrile