Improved synthesis and antitumor evaluation of 5,8-dideazaisofolic acid and closely related analogs
作者:J. B. Hynes、Y. C. S. Yang、J. E. McGill、S. J. Harmon、W. L. Washtien
DOI:10.1021/jm00368a023
日期:1984.2
A new synthetic route to 5,8-dideazaisofolic acid (IAHQ) is described which precludes the possibility of contamination due to its 4-amino counterpart 5,8-dideazaisoaminopterin. Substitution of D-glutamic acid in this synthetic scheme gave D-IAHQ. The 9-formyl, 9-methyl, 5-methyl, and 5,9-dimethyl modifications of IAHQ were also prepared. These compounds, together with several structurally related or
描述了一种新的合成途径,即5,8-二叠氮基异叶酸(IAHQ),由于其4-氨基对应物5,8-二叠氮基异氨基蝶呤而避免了污染的可能性。在该合成方案中用D-谷氨酸取代得到D-IAHQ。还制备了IAHQ的9-甲酰基,9-甲基,5-甲基和5,9-二甲基修饰。研究了这些化合物以及几种结构上相关或异构的类似物对四种人胃肠道腺癌细胞系体外生长的抑制作用。通常,在9和10位具有正常叶酸构型的化合物比其反向桥异构体具有更高的活性。D-IAHQ抗肿瘤活性的缺乏提供了有关IAHQ作用机理的间接证据。