Folate Analogues. 25. Synthesis and Biological Evaluation of N<sup>10</sup>-Propargylfolic Acid and Its Reduced Derivatives
作者:Maryam Ghazala、M Nair、Tahereh Toghiyani、R Kisliuk、Y Gaumont、T Kalman
DOI:10.1021/jm00157a600
日期:1986.7
N10-Propargylfolic acid (2), which is the closest pteridine analogue of the thymidylate synthase inhibitor N10-propargyl-5,8-dideazafolic acid (PDDF), was synthesized starting from diethyl [p-(N-propargylamino)benzoyl]-L-glutamate (5) and N-(3-bromo-2-oxopropyl)phthalimide (8). The 7,8-dihydro derivative of propargylfolic acid served as a synthetic substrate of Lactobacillus casei dihydrofolate reductase
N10-炔丙基叶酸(2)是胸苷酸合酶抑制剂N10-炔丙基-5,8-二氮杂az酸(PDDF)的最接近蝶啶类似物,是从二乙基[p-(N-炔丙基氨基)苯甲酰基] -L合成的-谷氨酸盐(5)和N-(3-溴-2-氧丙基)邻苯二甲酰亚胺(8)。炔丙基叶酸的7,8-二氢衍生物用作干酪乳杆菌二氢叶酸还原酶的合成底物。与PDDF相比,丙草酸及其还原衍生物是干酪乳杆菌胸苷酸合酶的弱抑制剂。炔丙基叶酸酯的所有衍生物均对粪便链球菌的生长具有活性,但是除7,8-二氢炔丙基叶酸外,其余均对干酪乳杆菌没有活性。尽管效力不及PDDF,但在透化的L1210细胞中观察到2对胸苷酸合酶的明显抑制作用。