(S)-methyl 4-(aminooxy)-2-methoxybutanoate 、
(R)-2-amino-7-(2-bromo-4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-pyrido[4,3-d]pyrimidine-5-thione 在
mercury(II) diacetate 作用下,
以
甲苯 为溶剂,
反应 2.0h,
以12%的产率得到(S)-methyl 4-((Z)-((R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-ylidene)aminooxy)-2-methoxybutanoate