Method for preparing N-(4-(((2,4-diamino-6-pteridinyl)-methyl)methylamino)benzoyl)glutamic acid
申请人:——
公开号:EP0048002A3
公开(公告)日:1982-06-23
The invention relates to a method for preparing N-[4-[[(2,4-diamino-6-pteridinyl)methyl]-methylamino]benzoyl]-glutamic acid (methotrexate), wherein diethyl N-[4-methylamino)benzoyl]glutamate of formula II
is alkylated with 2,4-diamino-6-chloromethylpteridine hydro chloride of formula I
in a polar aprotic solvent in the presence of potassium iodide whereafter the resulting hydroiodide of diethyl N-[4-[[(2,4 diamino-6-pteridinyl)methyl]methylamino]benzoyl] glutamate of formula III
is hydrolyzed, either directly or after neutralization to III, to yield N-[4-[[(2,4-diamino-6-pteridinyl)methyl]methylamino]-benzoyl]glutamic acid (methotrexate) of formula V
Methotrexate (N-[4-[[(2,4-diamino-6-pteridinyl)methyl)-- methylamino]-benzoyl]glutamic acid) is a well known antineoplastic agent useful in the treatment of acute leukemia and other cancerous diseases.
本发明涉及一种制备 N-[4-[[(2,4-二氨基-6-蝶啶基)甲基]-甲基氨基]苯甲酰基]-谷氨酸(甲氨喋呤)的方法,其中式 II 的 N-[4-甲基氨基]苯甲酰基谷氨酸二乙酯
与式 I 的 2,4-二氨基-6-氯甲基蝶啶氢氯化物烷基化
在极性非烷基溶剂中,在碘化钾存在下,生成式 III 的 N-[4-[[(2,4-二氨基-6-蝶啶基)甲基]甲基氨基]苯甲酰]谷氨酸二乙酯的氢碘化物
直接水解或与 III 中和后水解,生成式 V 的 N-[4-[[(2,4-二氨基-6-蝶啶基)甲基]甲氨基]苯甲酰基]谷氨酸(甲氨蝶呤
甲氨蝶呤(N-[4-[[(2,4-二氨基-6-蝶啶基)甲基]-甲基氨基]-苯甲酰基]谷氨酸)是一种众所周知的抗肿瘤药物,可用于治疗急性白血病和其他癌症疾病。