反应详情

The product from Example 26D (87.5 mg, 0.155 mmol), 2-methylpropanal (17 μl, 0.186 mmol), acetic acid (11 μl, 0.181 mmol), and sodium triacetoxyborohydride (53 mg, 0.248 mmol) were processed as described in Example 27 to provide the title compound (50 mg, 52%). 1H NMR (CDCl3) δ 8.72 (s, 2H), 7.78 (s, 2H), 7.29-7.06 (m, 10H), 5.20 (s, 4H), 4.77 (br s, 2H), 3.83 (br s, 2H), 2.88 (dd, 2H), 2.70 (m, 2H), 2.42 (m, 4H), 2.15 (d, 2H), 0.83 (d, 6H); MS (ESI+) m/z 622 (M+H)+.