反应详情

A mixture of 2M NaOH (0.09 mL, 0.18 mmol) and methyl (6-{4-[({5-[(2-fluorophenyl)amino]-1,3,4-oxadiazol-2-yl}carbonyl)amino]piperidin-1-yl}pyridin-3-yl)acetate (Intermediate 102) (41 mg, 0.09 mmol) in MeOH (1 mL) was stirred for 16 h then acidified with 2M HCl and concentrated by evaporation. The residue purified by preparative HPLC to give the title compound (1 mg) as a gum; 1H NMR (CD3OD) δ 1.78-1.63 (m, 3H), 2.11-2.00 (m, 2H), 3.35-3.25 (m, 2H), 3.55 (s, 2H), 4.23-4.07 (m, 3H), 7.07-6.99 (m, 1H), 7.15-7.07 (m, 2H), 7.30-7.23 (m, 1H), 7.79 (s, 1H), 7.89-7.83 (m, 1H), 7.99-7.91 (m, 1H); MS m/e MH+ 441.

1. concentrationconcentrated by evaporation
2. customThe residue purified by preparative HPLC