Inhibition of hog liver folylpolyglutamate synthetase by 5-substituted 5,8-dideaza analogs of folic acid bearing a terminal L-ornithine residue
作者:John B. Hynes、Shyam K. Singh、Oliver Fetzer、Barry Shane
DOI:10.1021/jm00100a013
日期:1992.10
3, as well as N alpha-[5-(trifluoromethyl)-5,8-dideazaisopteroyl]-L-ornithine, 4, and its 5-fluoro and 5-chloro analogues. Both of the compounds containing a 5-(trifluoromethyl) group (3 and 4) were found to be excellent inhibitors of homogeneous hog liver folylpolyglutamate synthetase, having Ki values in the same range as N alpha-(5-chloro-5,8-dideazapteroyl)-L-ornithine, 2, (approximately 10 nM)
使用多步合成序列已制备了五个新的Nα-(5,8-二氮杂叠氮酰基)-L-鸟氨酸。这些包括Nα-[5-(三氟甲基)-5,8-二叠氮杂戊酰基] -L-鸟氨酸3,以及Nα-[5-(三氟甲基)-5,8-二叠氮杂异蝶酰基] -L-鸟氨酸4 ,以及它的5-氟和5-氯类似物。发现含有5-(三氟甲基)基团的两种化合物(3和4)都是均一猪肝叶酰聚谷氨酸合成酶的优异抑制剂,其Ki值与Nα-(5-氯-5,8-双二氮杂异戊酰基)-L-鸟氨酸2(约10 nM)。但是,2的桥反异构体的抑制作用比2少60倍。