(R,S)-9-cyclopentyl-5,7,7-trimethyl-2-(1-(piperidin-4-yl)ethylamino)-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one 、
碘甲烷 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
反应 0.5h,
以10%的产率得到(R,S)-9-cyclopentyl-5,7,7-trimethyl-2-(1-(1-methylpiperidin-4-yl)ethylamino)-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one