反应详情

A solution of the compound of Example 60 (53 mg, 101 μmol) in ethanol (1 mL) and 1 M aq. NaOH (1 mL) is stirred at rt for 18 h. The ethanol is evaporated, the remaining solution is neutralized by adding 1 N aq. HCl, and the mixture is separated by prep. HPLC to give the title compound (23 mg) as a white solid; LC-MS: tR=0.88 min, [M+H]+=497.08; 1H NMR (CDCl3): δ0.98 (d, J=6.5 Hz, 6H), 1.27 (t, J=7.3 Hz, 3H), 1.93 (hept, J=7.0 Hz, 1H), 2.34 (s, 3H), 2.44 (s, 3H), 2.60 (d, J=7.3 Hz, 2H), 2.65-2.83 (m, 4H), 3.18-3.40 (m, 4H), 3.82-3.96 (m, 2H), 4.52-4.61 (m, 1H), 7.88 (s, 1H), 7.92 (s, 1H), 8.06 (s, 1H), 8.51 (s, 1H).

1. customThe ethanol is evaporated
2. additionby adding 1 N aq. HCl
3. customthe mixture is separated by prep