HCID 86683486, compound → HCID 53373088, compound

Participants

Reaction Steps

Tert-butyl 4-(4-(7-(6-cyano-5-methylpyridin-3-yl)-8-oxo-6-thioxo-5,7-diazaspiro[3.4]octan-5-yl)phenoxy)piperidine-1-carboxylate (prepared by reaction of 5-(5-(4-hydroxyphenyl)-8-oxo-6-thioxo-5,7-diazaspiro[3.4]octan-7-yl)-3-methylpicolinonitrile (Compound 77) with tert-butyl 4-hydroxypiperidine-1-carboxylate, according to Example 16, 300 mg, 0.55 mmol) was stirred in 2M HCl/methanol (1.5 mL) at room temperature overnight. The mixture was concentrated and purified by column chromatography, eluting with 10% MeOH/DCM to provide 230 mg of 3-methyl-5-(8-oxo-5-(4-(piperidin-4-yloxy)phenyl)-6-thioxo-5,7-diazaspiro[3.4]octan-7-yl)picolinonitrile as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.72 (d, 1H), 8.14 (d, 1H), 7.30 (d, 2H), 7.13 (d, 2H), 4.53-4.42 (m, 1H), 3.94-3.86 (m, 1H), 3.02-2.83 (m, 3H), 2.66-2.50 (m, 5H), 2.49-2.33 (m, 3H), 2.11-1.80 (m, 3H), 1.60-1.33 (m, 3H). LCMS [M+1]+ 448.1.

Provenance & Evidence