2,4-Diamino- and 2-amino-4-hydroxy- derivatives of N-(4-[2-(pyrido[2,3-d]pyrimidin-6-yl)alkyl]benzoyl)-L-glutamic acids, and the corresponding 5,6,7,8-tetrahydro compounds are antineoplastic agents. The compounds are prepared by hydrolytic or hydrogenolytic removal of carboxylic acid protecting groups from the correspondingly protected glutamic acid derivatives. A typical embodiment is N-)4-[2-(2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl)e thyl]benzoyl)-L-glutamic acid.
2,4-二
氨基和2-
氨基-
4-羟基-N-(4-[2-(
吡啶并[2,3-d]
嘧啶-6-基)烷基]苯甲酰)-
L-谷氨酸衍
生物及其相应的5,6,7,8-四氢化合物是抗肿瘤剂。这些化合物是通过从相应保护的谷
氨酸衍
生物中
水解或氢解
羧酸保护基制备而成的。一个典型的实施例是N-)4-[2-(2-
氨基-
4-羟基-5,6,7,8-四氢
吡啶[2,3-d]
嘧啶-6-基)乙基]苯甲酰)-
L-谷氨酸。