反应详情

The title compound was prepared following the method for preparing Intermediate 6 except that 3-amino-3-(3,4-dimethoxy-phenyl)-propionic acid was substituted with 3-amino-3-(3-methoxy-4-cyclopentyloxy-phenyl)propionic acid. 1H NMR (CDCl3): δ 6.78-6.88 (m, 3H), 4.69-4.73 (m, 1H), 4.34 (t, 1H, J=5 Hz), 3.82 (s, 3H), 3.66 (s, 3H), 2.62 (d, 2H, J=5 Hz), 1.75-1.92 (m, 8H), 1.58 (s, 2H).