Methotrexate analog. 32. Chain extension, .alpha.-carboxyl deletion, and .gamma. carboxyl replacement by sulfonate and phosphate. Effect on enzyme binding and cell-growth inhibition
作者:Andre Rosowsky、Ronald A. Forsch、Richard G. Moran、William Kohler、James H. Freisheim
DOI:10.1021/jm00402a012
日期:1988.7
acid side chains in place of glutamate were synthesized and tested as inhibitors of folylpolyglutamate synthetase (FPGS) from mouse liver. The aminophosphonoalkanoic acid analogues were also tested as inhibitors of dihydrofolate reductase (DHFR) from L1210 murine leukemia cells and as inhibitors of the growth of MTX-sensitive (L1210) and MTX-resistant (L1210/R81) cells in culture. The optimal number
合成了甲氨蝶呤(MTX)和氨基蝶呤(AMT)与氨基膦酸侧链,氨基链烷磺酸和氨基链烷膦酸侧链代替谷氨酸的类似物,并作为小鼠肝脏叶酰聚谷氨酸合成酶(FPGS)的抑制剂进行了测试。还测试了氨基膦酸链烷酸类似物作为L1210鼠白血病细胞中二氢叶酸还原酶(DHFR)的抑制剂,以及培养中MTX敏感(L1210)和MTX耐药(L1210 / R81)细胞生长的抑制剂。发现AMT的氨基膦酰基链烷酸类似物中的CH 2基团的最佳数目对于酶抑制和细胞生长抑制都是两个,但是对于对抗FPGS的活性尤其关键。与先前研究的高半胱氨酸和2-氨基-4-膦酰基丁酸类似物相比,α-羧基的缺失也导致抗-FPGS活性降低。在没有α-羧基的MTX的氨基链烷磺酸类似物中,由于羧酰胺和磺酸酯部分之间的CH2基团数量从一变为四个,因此抗FPGS活性较低,并且变化很小。在类似的MTX氨基烷烃膦酸类似物中,抗FPGS活性也很低,在羧酰胺和膦酸