(rac)-3-[(2-chloro-5-nitro-pyrimidin-4-yl)-(tetrahydro-pyran-4-yl)-amino]-2-methyl-propanoic acid ethyl ester 在
铁粉 乙酸乙酯 、
水 、
铵 、 Brine 、
magnesium sulfate 、 silica gel 、
ethyl acetate dichloromethane 、 dichloromethane—hexanes 作用下,
以
溶剂黄146 为溶剂,
反应 3.0h,
以to give 1.63 g of (rac)-2-chloro-7-methyl-9-(tetrahydro-pyran-4-yl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VI-45) as white crystalline solid的产率得到(rac)-2-chloro-7-methyl-9-(tetrahydro-pyran-4-yl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one