(R)-3-methyl-3-(2-methyl-5-nitro-4-oxoquinazolin-3(4H)-yl)piperidine-2,6-dione 在
钯 氢气 、 silica gel 、 Acetonitrile methylene chloride 作用下,
以
甲醇乙酸乙酯 为溶剂,
反应 3.0h,
以providing (R)-3-(5-amino-2-methyl-4-oxoquinazolin-3(4H)-yl)-3-methylpiperidine-2,6-dione as an off-white solid (0.16 g 44% yield)的产率得到(R)-3-(5-amino-2-methyl-4-oxoquinazolin-3(4H)-yl)-3-methylpiperidine-2,6-dione