6-[({1-[2-(7-Methoxy-2-oxoquinoxalin-1(2H)-yl)ethyl]piperidin-4-yl}amino)methyl]-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one → 7-methoxy-1-(2-(4-((3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)methylamino)piperidin-1-yl)ethyl)quinoxalin-2(1H)-one hydrochloride

Participants

Reaction Steps

To 3 mL of a methanol solution containing 202 mg of 7-methoxy-1-(2-(4-((3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)methylamino)piperidin-1-yl)ethyl)quinoxalin-2(1H)-one, 1 mL of 4 mol/L hydrogen chloride/ethyl acetate was added, and the solvent was removed under reduced pressure, ethyl acetate was added, and the resulting solid was filtered to give 209 mg of 7-methoxy-1-(2-(4-((3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)methylamino)piperidin-1-yl)ethyl)quinoxalin-2(1H)-one hydrochloride as a pale yellow powder.

Provenance & Evidence