Method for preparing N-(4-(((2,4-diamino-6-pteridinyl)-methyl)methylamino)benzoyl)glutamic acid and analogues thereto
申请人:Farmos Group Ltd.
公开号:EP0048000A2
公开(公告)日:1982-03-24
The invention relates to a method for preparing pteridine derivatives of the general formula I
wherein R' is NH2 or OH, R2 is NH2 or NHR5, wherein R5 is lower alkyl, R3 is H or lower alkyl, m is an integer up to 4, n is an integer 0, 1, 2, 3, 4, R4 is hydrogen, lower alkyl, halogen or trifluormethyl, and R' is H or lower alkyl, in L, D, or D,L-form, wherein a compound of the general formula II
wherein R', R2, R3, R4, m and n are as defined above, and, if required, R3 in the meaning hydrogen is protected with a protecting group such as an acetyl or trifluoroacetyl group, is reacted with a compound of the general formula III
wherein R7 is lower alkyl, whereafter, if required, a protected amino group NR3 is deprotected and R'7 is, if desired, hydrolysed to yield a compound of formula I wherein R7 is hydrogen.
The pteridine derivatives according to the present invention are antineoplastic, agents useful in the treatment of acute leukemia and other cancerous diseases.
本发明涉及一种制备通式 I 的蝶啶衍生物的方法。
其中R'为NH2或OH,R2为NH2或NHR5,其中R5为低级烷基,R3为H或低级烷基,m为至多4的整数,n为0、1、2、3、4的整数,R4为氢、低级烷基、卤素或三氟甲基,R'为H或低级烷基,以L、D或D,L形式存在,其中通式II的化合物
其中 R'、R2、R3、R4、m 和 n 如上所定义,必要时,表示氢的 R3 用保护基如乙酰基或三氟乙酰基保护,与通式 III 的化合物反应
其中 R7 为低级烷基,然后,如果需要,被保护的氨基 NR3 被脱保护,如果需要,R'7 被水解,得到式 I 的化合物,其中 R7 为氢。
根据本发明的蝶啶衍生物是抗肿瘤药物,可用于治疗急性白血病和其他癌症疾病。