Synthesis of Classical and Nonclassical, Partially Restricted, Linear, Tricyclic 5-Deaza Antifolates
作者:Aleem Gangjee、Yibin Zeng、John J. McGuire、Roy L. Kisliuk
DOI:10.1021/jm0202369
日期:2002.11.1
to DHFR inhibitory activity as well as to antitumor activity compared to MTX or 5-deaza MTX. However, the classical analogue 3 was a better substrate for folypolyglutamate synthetase (FPGS) than MTX. These results show that a classical 5-deaza folate partially restricted via a bridge between the N10 and C7 positions retains FPGS substrate activity and that the antitumor activity of classical tricyclic
设计并合成了7种新颖的2,4-二氨基-5-脱氮基6,3,8,9-四氢吡啶并[3,4-g]蝶啶衍生物3-9,在N7位具有不同的苄基和苯甲酰基取代基,经典和非经典,部分受限制的线性三环5-deaza抗叶酸剂。目的是研究通过5-脱氮氨甲蝶呤(MTX)的N10到C7位置的乙基桥对C6-C9(tau(1))和C9-N10(tau(2))键进行构象限制的作用)对不同来源的二氢叶酸还原酶(DHFR)的抑制力以及抗肿瘤活性。大多数目标化合物的合成方法是简洁的五步全合成,以构建三环核2,2,4-二氨基-5-脱氮基-7H-6,7,8,9-四氢吡啶并[3,4-g ]蝶啶(23),然后将N7氮进行区域选择性烷基化。生物学结果表明,对经典类似物N- [4-[(2,4-diamino-5-deaza-6,7,8,9-tetrahydropyrido [3,4-g] pteridin-7-yl)的部分构象修饰与MTX或5-脱氮MTX相比,)甲基]苯甲酰基]