Morpholine → HCID 178489735, compound

Participants

Reaction Steps

To a solution of (R,Z)-2-(2-amino-7-(4-fluoro-2-(6-methoxypyridin-2-yl)phenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-ylideneaminooxy)acetic acid (105d, 0.05 mmol, 22.6 mg) in DMF (0.5 mL) was added HBTU (0.075 mmol, 28 mg), Et3N (0.125 mmol, 17 μL) and morpholine (0.1 mmol, 8.3 μL). The reaction mixture was stirred over night at r.t. and LCMS shows completion of the reaction. Purified by prep LCMS to afford the title compound (R,Z)-2-(2-amino-7-(4-fluoro-2-(6-methoxypyridin-2-yl)phenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-ylideneaminooxy)-1-morpholinoethanone (102, 5.7 mg, 22%) as off white solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.83 (s, 3H) 3.15 (dd, J=17.31, 10.23 Hz, 2H) 3.43-3.51 (m, 2H) 3.63 (d, J=5.31 Hz, 2H) 3.65-3.71 (m, 4H) 3.89 (s, 3H) 4.71 (s, 2H) 4.97 (dd, J=10.36, 3.79 Hz, 1H) 5.96 (br. s., 1H) 6.77 (d, J=8.34 Hz, 1H) 7.03 (d, J=7.07 Hz, 1H) 7.14 (dd, J=9.35, 2.78 Hz, 1H) 7.19 (td, J=8.40, 2.65 Hz, 1H) 7.63 (dd, J=8.84, 5.56 Hz, 1H) 7.68 (dd, J=8.34, 7.33 Hz, 1H). MS (ES) [M+H] calculated for C26H28FN7O4, 522.22; found 522.00.

Provenance & Evidence