反应详情

To a solution of methyl 2-(5-(4-(4-tert-butylbenzamido)phenyl)thiazole-2-carboxamido)-3-methylbutanoate (110 mg) in THF (2.2 ml) was added 1 M aqueous solution of Lithium hydroxide monohydrate (0.44 ml) and the reaction mixture was stirred at RT for 4 hours. The reaction mixture was acidified with dilute HCl and extracted with EtOAc. The organic layer was separated, dried over Na2SO4, concentrated under vacuum to get off white solid which was crystallized in EtOAc to give the title compound. Yield: 87 mg (81%); 1H NMR (DMSO-d6, 300 MHz): δ 13.02 (bs, 1H), 10.38 (s, 1H), 8.4 (s, 1H), 8.36 (d, 1H), 7.94 (d, 2H), 7.91 (d, 2H), 7.8 (d, 2H), 7.58 (d, 2H), 4.32 (m, 1H), 2.26 (m, 1H), 0.95 (d, 6H); MS (ES+) m/z 480 (M+1).

1. extractionextracted with EtOAc
2. customThe organic layer was separated
3. dry with materialdried over Na2SO4
4. concentrationconcentrated under vacuum
5. customto get off white solid which
6. customwas crystallized in EtOAc