O-((2S,3R,4R,5S,6S)-3,4,5-trimethoxy-6-methyl-tetrahydropyran-2-yl)-hydroxylamine → 4-[1-(4-Trifluoromethoxyphenyl)-1H-imidazol-4-yl]-benzaldehyde O-((2S,3R,4R,5S,6S)-3,4,5-trimethoxy-6-methyl-tetrahydropyran-2-yl)-oxime

Participants

Reaction Steps

A solution of 4-[1-(4-trifluoromethoxyphenyl)-1H-imidazol-4-yl]-benzaldehyde (50 mg, 0.15 mmol) and O-(2S,3R,4R,5S,6S)-(3,4,5-trimethoxy-6-methyl-tetrahydropyran-2-yl)-hydroxylamine (45 mg, 0.20 mmol) were combined in 5 mL of dry EtOH, and the solution heated at reflux under a N2 atmosphere for 12 h. The resulting solution was concentrated in vacuo and purified by chromatography (Biotage, 1:1:1 Hexanes/EtOAc/DCM) to furnish 35 mg (44%) of Compound 26 as a white solid. 1H NMR (300 MHz, CDCl3) δ 8.15 (s, 1H), 7.90 (s, 1H), 7.85 (d, J=6 Hz, 2H), 7.68 (d, J=6 Hz, 2H), 7.60 (s, 1H), 7.68 (s, 1H), 7.50 (d, J=6 Hz, 2H), 7.38 (d, J=6 Hz, 2H), 3.77 (dd, J=3.2, 2.0 Hz, 1H), 3.68 (dd, J=9.6, 6.2 Hz, 1H), 3.59 (s, 3H), 3.56 (s, 3H), 3.55 (s, 3H), 3.51 (m, 1H), 3.21 (t, J=9.3 Hz, 1H), 1.33 (d, J=6.1 Hz, 3H); MS 536.1 (M+H); mp 178° C. Anal. Calcd. for C16H10F3N3O2: C, 59.01; H, 5.50; N, 7.65. Found: C, 58.86; H, 5.58; N, 7.63.

Provenance & Evidence