Synthesis and In Vitro Antitumor Activity of New Deaza Analogues of the Nonpolyglutamatable Antifolate <i>N</i><sup>α</sup>-(4-Amino-4-deoxypteroyl)-<i>N</i><sup>δ</sup>-hemiphthaloyl-<scp>l</scp>-ornithine (PT523)
作者:Chitra M. Vaidya、Joel E. Wright、Andre Rosowsky
DOI:10.1021/jm010518t
日期:2002.4.1
of CCRF-CEM human leukemic lymphoblasts, the IC(50) of 2 and 6 was 0.69 +/- 0.044 nM and 1.3 +/- 0.35 nM, respectively, as compared with previously reported values 4.4 +/- 0.10 nM for aminopterin (AMT) and 1.5 +/- 0.39 nM for PT523. In a spectrophotometric assay of dihydrofolate reductase (DHFR) inhibition using dihydrofolate and NADPH as the cosubstrates, the previously unreported compounds 2 and the
公开了合成Nα-[4- [2-(2,4-二氨基喹唑啉-6-基)乙基]苯甲酰基]-Nδ-半邻苯二甲酰基-L-鸟氨酸的细节(2)和N( α)-[4- [5-(2,4-二氨基萜啶-6-基)戊-1-yn-4-基]苯甲酰基]-Nδ-半邻苯二甲酰基-L-鸟氨酸(6)作为N的类似物α-(4-氨基-4-脱氧蝶酰基)-Nδ-半邻苯二甲酰基-L-鸟氨酸(1,PT523),一种不可聚谷氨酸的抗叶酸药物,目前正处于临床前发展阶段。在针对CCRF-CEM人白血病淋巴母细胞培养物的72小时生长抑制分析中,与先前报道的值4.4相比,2和6的IC(50)分别为0.69 +/- 0.044 nM和1.3 +/- 0.35 nM。氨基蝶呤(AMT)的+/- +/- 0.10 nM和PT523的1.5 +/- 0.39 nM。在使用二氢叶酸和NADPH作为共底物的分光光度法测定二氢叶酸还原酶(DHFR)抑制作用的情况下,与先前报道的3