反应详情

Use conditions analogous to those described in Step E of Examples 1A and 1B to couple (±)-2-[3-(tert-butyl-dimethyl-silanyloxymethyl)-2,5-bis-methoxymethoxy-phenyl]-cyclopentanecarboxylic acid methoxy-methyl-amide (0.622 g, 1.25 mmol) and 1-bromo-4-methoxymethoxy-benzene (0.543 g, 2.50 mmol). Purify the material by silica gel chromatography eluting with Hex:EtOAc (90:10) to afford the subtitled product (0.549 g, 76%) as an oil. 1H NMR (CDCl3) δ 0.02 (s, 3H), 0.04 (s, 3H), 0.90 (s, 9H), 1.72-1.77 (m, 1H), 1.91-2.12 (m, 4H), 2.21-2.30 (m, 1H), 3.38 (s, 3H), 3.43 (s, 3H), 3.59 (s, 3H), 3.80-3.87 (m, 1H), 4.18-4.25 (m, 1H), 4.55 (dd, J=13.6, 44.7 Hz, 2H), 4.89 (dd, J=5.9, 7.5 Hz, 2H), 4.95 (dd, J=6.6, 20.3 Hz, 2H), 5.12 (dd, J=6.8, 7.9 Hz, 2H), 6.61 (d, J=3.0 Hz, 1H), 6.75 (d, J=3.0 Hz, 1H), 6.81 (d, J=8.9 Hz, 2H), 7.63 (d, J=8.9 Hz, 2H).

1. customPurify the material by silica gel chromatography
2. washeluting with Hex