Acetic Acid → 1-{4-Hydroxy-4-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]piperidin-1-yl}ethanone

Participants

Reaction Steps

To a mixture of acetic acid (9 μL, 0.15 mmol) and Si-carbonyl diimidazole (266 mg, 0.287 mmol) was added a solution of 4-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]piperidin-4-ol (Example 46, 50 mg, 0.115 mmol) and hydroxybenzotriazole (26 mg, 0.17 mmol) dissolved in N,N-dimethylformamide, and the resultant suspension was shaken in a Bohdan block overnight at room temperature. The reaction mixture was filtered and concentrated in vacuo, and the resultant residue was dissolved in DMSO and purified via HPLC (30-64% CH3CN:H2O) to provide 1-{4-hydroxy-4-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]piperidin-1-yl}ethanone. MS ESI: [M+H]+ m/z 478.1. 1H NMR (600 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.81 (d, J=5.2 Hz, 1H), 7.95 (s, 2H), 7.44 (s, 1H), 7.26 (d, J=5.1 Hz, 1H), 7.14 (s, 1H), 6.30 (s, 1H), 4.25-3.99 (m, 1H), 3.73 (m, 1H), 3.41-3.34 (m, 1H), 3.07-2.97 (m, 1H), 2.47 (s, 3H), 2.32 (s, 3H), 2.25-2.14 (m, 1H), 1.93 (m, 2H), 1.75 (m, 1H). rhSYK activity=+++

Provenance & Evidence