The invention pertains to derivatives of N-[4-(N-[2-amino-4(3H)-oxo-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-ylmethyl]amino)benzoyl]-L-glutamic acid of the formula:
wherein
R¹ is hydrogen, methyl, ethyl, or R⁵CO-;
R2ʹ and R3ʹ are hydrogen or a carboxylic acid protecting group;
R4ʹ is hydrogen or an amino protecting group; and
R⁵ is hydrogen or alkyl and the configuration about the carbon atom designated * is L, which derivatives are antineoplastic agents, to their preparation and use, and to intermediates useful in their preparation.
本发明涉及 N-[4-(N-[2-
氨基-4(3H)-氧代-5,6,7,8-四氢
吡啶并[2,3-d]
嘧啶-6-基甲基]
氨基)苯甲酰基]-
L-谷氨酸的衍
生物,其式如下:
其中
R¹是氢、甲基、乙基或R⁵CO-;
R2ʹ和 R3ʹ是氢或
羧酸保护基团;
R4ʹ 是氢或
氨基保护基;以及
R⁵是氢或烷基,围绕碳原子的构型 * 是 L,这些衍
生物是抗肿瘤剂,它们的制备和使用,以及制备过程中有用的中间体。