Formaldehyde → HCID 10173268, compound

Participants

Reaction Steps

Aq. formaldehyde (0.19 mL) and sodium triacetoxy borohydride (0.526 g) were added to a suspension of N-(4-chlorobenzyl)-2-(((2-hydroxypropyl)-amino)methyl)-7-methyl-4-oxo-4,7-dihydrofuro[2,3-b]pyridine-5-carboxamide (Example 33, 0.500 g) in],2-dichloroethane (50 mL). The reaction mixture was stirred at room temperature for 18 h. A sat. aq. sodium bicarbonate solution (30 mL) was added. The aqueous layer was separated and extracted with CH2Cl2 (4×50 mL). The combined organic layers were dried (MgSO4), filtered, and concentrated in vacuo. The resulting solid was purified by column chromatography (CH2Cl2/methanol; 97/3, 96/4) followed by recrystallization from ethyl acetate to yield 0.301 g of the title compound as a white solid. Physical characteristics. M.p. 152° C.; 1H NMR (400 MHz, DMSO-d6) δ 10.65, 8.55, 7.41-7.32, 6.87, 4.55, 4.35, 3.92, 3.80-3.73, 3.69, 2.36-2.31, 2.28-2.20, 1.04; MS (EST+) m/z 418 (M+H)+.

Provenance & Evidence