反应详情

Following the procedure as described in Example 150 step 5 and making variations as required to replace 6-(adamantan-1-ylmethoxy)-5-cyclopropylnicotinic acid with 5-cyclopropyl-2-fluoro-4-((3,5,7-trifluoroadamantan-1-yl)methoxy)benzoic acid and to replace methyl sulfonamide with azetidine-1-sulfonamide. Purification by silica gel column chromatography (1:1 hexanes:ethyl acetate (+0.2% acetic acid v/v)) gave the title compound as a colorless solid (0.10 g, 47%): 1H NMR (300 MHz, DMSO-d6) δ 11.61 (br s, 1H), 7.14 (d, J=8.3 Hz, 1H), 6.94 (d, J=12.7 Hz, 1H), 4.01 (t, J=7.6 Hz, 4H), 3.93 (s, 2H), 2.25-1.99 (m, 9H), 1.80 (s, 6H), 0.93-0.85 (m, 2H), 0.67-0.60 (m, 2H); MS (ES−) m/z 515.1 (M−1).

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