The diastereoisomeric forms of N-(4-[2-(2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]-pyrimidin-6-yl) ethyl]benzoyl)-L-glutamic acid are antineoplastic agents. The compounds are prepared by separation of the diastereoisomeric form of the correspondingly protected glutamic derivatives and hydrolytic or hydrogenolytic removal of carboxylic acid and/or amino protecting groups. Typical embodiments are the (R,S) and (S,S) forms of N-(4-[2-(2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl)e thyl]benzoyl)-L-glutamic acid.
N-(4-[2-(2-
氨基-
4-羟基-5,6,7,8-四氢
吡啶并[2,3-d]-
嘧啶-6-基)乙基]苯甲酰)-
L-谷氨酸的对映异构体形式是
抗肿瘤药物。这些化合物通过分离相应保护的谷
氨酸衍
生物的对映异构体形式,并
水解或氢解去除
羧酸和/或
氨基保护基来制备。典型的实施形式是N-(4-[2-(2-
氨基-
4-羟基-5,6,7,8-四氢
吡啶并[2,3-d]
嘧啶-6-基)乙基]苯甲酰)-
L-谷氨酸的(R,S)和(S,S)形式。