tert-butyl N-[(2S)-1-[[1-(6,7-dimethoxyquinazolin-4-yl)piperidin-4-yl]methylamino]-4-methyl-1-oxopentan-2-yl]carbamate 在
盐酸 作用下,
以
甲醇 为溶剂,
以98%的产率得到(S)-2-Amino-4-methyl-pentanoic acid [1-(6,7-dimethoxy-quinazolin-4-yl)-piperidin-4-ylmethyl]-amide; hydrochloride