ethyl acetate hydrochloride 、
tert-butyl methyl-(2-{pyridin-4-ylmethyl-[3-(1,3,3,5-tetramethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-7-yloxy)propyl]amino}ethyl)carbamate 在
二氯甲烷 、
三氟乙酸 、
methanol-dichloromethane 、 quaternary ammonium carbonate 作用下,
以
乙酸乙酯 为溶剂,
反应 17.0h,
以to thereby obtain 1.44 g (yield: quantitative) of 1,3,3,5-tetramethyl-7-{3-[(2-methyl aminoethyl)pyridin-4-ylmethylamino]propoxy}-1,5-dihydrobenzo[b][1,4]diazepine-2,4-dione as a pale brown oil的产率得到1,3,3,5-Tetramethyl-7-{3-[(2-methyl aminoethyl)pyridin-4-ylmethylamino]propoxy}-1,5-dihydrobenzo[b][1,4]diazepine-2,4-dione