Synthesis and Biological Activity of Folic Acid and Methotrexate Analogues Containing <scp>l</scp>-<i>threo</i>-(2<i>S,</i>4<i>S</i>)-4-Fluoroglutamic Acid and <scp>dl</scp>-3,3-Difluoroglutamic Acid
作者:Barry P. Hart、William H. Haile、Nicholas J. Licato、Wanda E. Bolanowska、John J. McGuire、James K. Coward
DOI:10.1021/jm950515e
日期:1996.1.1
L-threo-gamma-fluorofolic acid (3t) are reported. Compounds 1t and 3t have no substrate activity with folylpoly-gamma-glutamate synthetase isolated from CCRF-CEM human leukemia cells, and compound 1t inhibits human dihydrofolate reductase at similar levels as methotrexate. The synthesis of DL-3,3-difluoroglutamic acid (6) and its incorporation into DL-beta,beta-difluorofolic acid (4) are also reported
报道了L-苏-γ-氟甲蝶呤(1t)和L-苏-γ-氟叶酸(3t)的立体有择合成。化合物1t和3t对从CCRF-CEM人白血病细胞中分离的叶酰聚-γ-谷氨酸合成酶没有底物活性,化合物1t在与甲氨蝶呤相似的水平上抑制人二氢叶酸还原酶。还报道了DL-3,3-二氟谷氨酸的合成(6)及其掺入DL-β,β-二氟叶酸(4)。与叶酸相比,化合物4作为人CCRF-CEM叶酰聚-γ-谷氨酸合成酶的底物更好(V / K =约高7倍)。因此,用4-氟谷氨酸和3,3-二氟谷氨酸代替甲氨蝶呤和叶酸的谷氨酸部分导致叶酸和抗叶酸具有改变的多谷氨酰化活性。