反应详情

Following the procedure as described in Example 271 and making variations as required to replace 6-(adamantan-1-ylmethoxy)-5-cyclopropylnicotinic acid with 4-(adamantan-1-ylmethoxy)-3,5-dichlorobenzoic acid and to replace 2-methoxyethanesulfonamide with methyl sulfonamide. Purification by silica gel column chromatography (2:1 hexanes:ethyl acetate (+0.2% acetic acid v/v)) gave the title compound as a colorless solid (0.72 g, 74%): 1H NMR (300 MHz, DMSO-d6) δ 12.20 (br s, 1H), 8.01 (s, 2H), 3.55 (s, 2H), 3.33 (s, 3H), 1.99-1.91 (m, 3H), 1.72-1.57 (m, 12H); MS (ES−) m/z 430.1, 432.1 (M−1).

1. customPurification by silica gel column chromatography (2:1 hexanes