Hydrochloric Acid → HCID 136347347, compound

Participants

Reaction Conditions

Reaction Steps

To the solution of the product of Example 345 (0.015 g, 0.032 mmol) in tetrahydrofuran (0.4 mL) was added triethylamine (0.022 mL, 0.160 mmol), and 1,8-diazabicyclo[5.4.0]undec-7-ene (0.020 mL, 0.129 mmol). The mixture was cooled to 0° C. and nicotinoylchloride hydrochloride (0.007 g, 0.035 mmol) was added. The mixture was stirred for 2.5 hours and then warmed to 23° C. and stirred for 2.5 hours. Additional 1,8 diazabicyclo[5.4.0]undec-7-ene (0.010 mL, 0.068 mmol) and nicotinoylchloride hydrochloride (0.006 g, 0.032 mmol) were added and the mixture was stirred at 23° C. for 15 hours. Added additional nicotinoyl chloride hydrochloride (0.006 g, 0.032 mmol) and stirred at 23° C. for 6 hours. A few drops of N,N-dimethylformamide were added to increase solubility. Added additional nicotinoyl chloride hydrochloride (0.006 g, 0.032 mmol) and stirred at 23° C. for 72 hours. Hydrochloric acid (4 M in dioxane) (0.095 mL, 0.370 mmol) was added and the reaction mixture was concentrated under reduced pressure. The resulting solid was then washed with diethyl ether and water. The solid was dissolved in 1% triethylamine/dichloromethane and purified by preparative thin layer chromatography eluting with 5%(5% triethylamine/methanol)/dichloromethane. The silica gel was washed with 10% (5% triethylamine/methanol)/dichloromethane to give the triethylamine salt of the title compound (0.0068 g, 31%). 1HNMR(500 MHz, DMSO-d6) δ 1.17 (t, J=7.32 Hz, 9 H) 3.09 (q, J=7.32 Hz, 6 H) 4.60 (d, J=4.88 Hz, 2 H) 5.44 (bs, 2 H) 7.00 (bs, 1 H) 7.12 (m, 1 H) 7.26 (m, 5 H) 7.46 (m, 1H) 7.53 (dd, J=7.63, 4.58 Hz, 1 H) 8.12 (d, J=7.32 Hz, 1 H) 8.26 (m, J=7.93 Hz, 1 H) 8.72 (d, J=3.66 Hz, 1 H) 8.86 (bs, 1 H) 9.09 (s, 1 H) 9.16 (bs, 1 H).

Provenance & Evidence