5'-Methylspiro[chromane-4,2'-imidazole]-4',6-diamine → N-(4'-amino-5'-methylspiro[chroman-4,2'-imidazole]-6-yl)-5-(but-2-ynyloxy)picolinamide

Participants

Reaction Steps

The title compound (15 mg, 16% yield) was prepared as described for Example 13a starting from 5-(but-2-ynyloxy)picolinic acid (Intermediate 19, 45 mg, 0.24 mmol) and 5′-methylspiro[chroman-4,2′-imidazole]-4′,6-diamine (Intermediate 30, 54.7 mg, 0.24 mmol): 1H NMR (500 MHz, CDCl3) δ ppm 1.87 (t, 3 H), 2.03 (m, 1 H), 2.30 (m, 1 H), 2.39 (m, 3 H), 4.50 (m, 1 H), 4.62 (m, 1 H), 4.76 (m, 2 H), 6.92 (d, 1 H), 6.98 (m, 1 H), 7.41 (dd, 1 H), 7.49 (m, 1 H), 8.18 (d, 1 H), 8.28 (d, 1 H), 9.61 (s, 1 H); MS (ES+) m/z 404 [M+H]+.

Provenance & Evidence