Triethylamine → (E)-2-oxo-6-(3-oxo-3-(4-(thiazol-2-ylmethyl)-5,6-dihydropyridin-1(2H)-yl)prop-1-en-1-yl)-2,4-dihydro-1H-spiro[[1,8]naphthyridine-3,4'-piperidine]-1'-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of (E)-6-(3-oxo-3-(4-(thiazol-2-ylmethyl)-5,6-dihydro pyridin-1(2H)-yl)prop-1-en-1-yl)-1H-spiro[[1,8]naph-thyridine-3,4′-piperidin]-2(4H)-one 2,2,2-trifluoroacetate (Compound 34) (150 mg, 0.26 mmol) in DMSO (2 mL) were added triethylamine (110 mg, 1.04 mmol) and phenyl carbamate (44 mg, 0.32 mmol) at 20-35° C. and the reaction mixture was allowed to stir at 20-35° C. for 16 h. Then the reaction mixture was poured into ice water (50 mL), obtained solid was filtered, washed with water and dried under vacuum to get the desired compound as a yellow solid (40 mg, 31%); 1H NMR (400 MHz, DMSO-d6) δ 10.71 (s, 1H), 8.37 (d, J=2.0 Hz, 1H), 8.10 (s, 1H), 7.71 (d, J=3.4 Hz, 1H), 7.61 (d, J=3.4 Hz, 1H), 7.45 (d, J=15.2 Hz, 1H), 7.28-7.14 (m, 1H), 5.93 (s, 2H), 5.68-5.65 (m, 1H), 4.28-4.20 (m, 1H), 4.08-4.02 (m, 1H), 3.76-3.72 (m, 3H), 3.66-3.62 (m, 1H), 3.60-3.52 (m, 2H), 3.18 (t, J=10.0 Hz, 2H), 2.95 (s, 2H), 2.20-2.06 (m, 2H), 1.76-1.66 (m, 2H), 1.34-1.24 (m, 2H); ES-MS: 493.3 (M+1)+.

Provenance & Evidence