Further evaluation of 5-alkyl-5-deaza antifolates. 5-propyl- and 5-butyl-5-deaza analogues of aminopterin and methotrexate
作者:James R. Piper、Balakrishnan Ramamurthy、Cheryl A. Johnson、Joseph A. Maddry、Glenys M. Otter、Francis M. Sirotnak
DOI:10.1002/jhet.5570320419
日期:1995.7
6-(bromomethyl)-2,4-diamino-5-ethylpyrido[2,3-d]pyrimidine. These antifolates were evaluated for inhibition of dihydrofolate reductase (DHFR) from L1210 cells, their effect on L1210 and S180 tumor cell growth in culture, and carrier-mediated transport through L1210 cell membranes. Inhibitory effect on DHFR was lowered relative to methotrexate in 5-propyl-5-deazaaminopterin and 5-propyl-5-deazamethotrexate
通过扩展先前报道的一般路线,合成经典抗叶酸药物的5-丙基5-脱氮基和5-丁基-5-脱氮基类似物,该一般路线通过2,4-二氨基-5-烷基吡啶并[2,3- d ]嘧啶-进行。 6-腈中间体,然后与N- 4-(氨基苯甲酰基)-L-戊二酸二乙酯还原缩合,得到5-烷基-5-deazaaminopterin类型的二乙酯。N 10-甲基衍生物,即5-烷基-5-脱氮甲氨蝶呤的衍生物,也通过N 10 -H化合物的还原甲基化制备。使用6-(溴甲基)-2,4-二氨基-5-乙基吡啶基[2,3- d]的替代方法制备5-乙基-5-脱氮甲氨蝶呤]嘧啶。评估了这些抗叶酸药物对L1210细胞中二氢叶酸还原酶(DHFR)的抑制作用,它们对培养物中L1210和S180肿瘤细胞生长的影响以及载体介导的通过L1210细胞膜的转运。上DHFR抑制作用相对于氨甲喋呤,5 -丙基-5- deazaaminopterin和5-丙基-5-