D-Psicose → HCID 71257244, compound

Participants

Reaction Steps

Following the general procedure-1 Tert-butyl 4-{7-fluoro-2-[2-fluoro-4-(methylsulfonyl)phenyl]benzo[d]oxazol-5-yl}-5,6-dihydropyridine-1(2H)-carboxylate (180 mg) obtained from intermediate 31 (600 mg, 1.38 mmol) and tert-butyl 4-(trifluoromethylsulfonyloxy)-5,6-dihydropyridine-1(2H)-carboxylate (456 mg, 1.38 mmol). Tert-butyl 4-{7-fluoro-2-[2-fluoro-4-(methylsulfonyl)phenyl]benzo[d]oxazol-5-yl}-5,6-dihydropyridine-1(2H)-carboxylate (150 mg, 0.30 mmol) dissolved in MeOH and added Pd/C (71 mg). This mixture was stirred in an auto clave in hydrogen atmosphere at 55 Psi for 12 h. Reaction mixture filtered through celite and washed the cetile with MeOH. Methanol was removed on rotavapour to obtain the titled compound (100 mg) as a brown solid. M.P.: 188-192.4° C. 1H-NMR (δ ppm, CDCl3, 400 MHz): 8.47 (t, J 7.12, 1H), 7.89 (t, J 7.6, 2H), 7.49 (s, 1H), 7.07 (d, J 11.2, 1H), 4.28 (bs, 2H), 3.13 (s, 3H), 2.90-2.72 (m, 3H), 1.95-1.85 (m, 2H), 1.72-1.56 (m, 2H). 1.49 (s, 9H).

Provenance & Evidence