5-Arylthio Substituted 2-Amino-4-oxo-6-methylpyrrolo[2,3-d]pyrimidine Antifolates as Thymidylate Synthase Inhibitors and Antitumor Agents
作者:Aleem Gangjee、Rajesh Devraj、John J. McGuire、Roy L. Kisliuk
DOI:10.1021/jm00022a015
日期:1995.10
4-mercaptobenzoate or 4-mercaptopyridine to 2-(pivaloylamino)-6-methyl-3,4-dihydro-4-oxo-7H-pyrrolo[2,3-d]pyri midine (17) in the presence of iodine. For the synthesis of 5 the ester obtained from the reaction was deprotected and coupled with diethyl L-glutamate followed by saponification. Compound 5 was a potent inhibitor of human and bacterial TS with IC50 values of 42 and 21 nM, respectively. Compound 6 was
胸苷酸合酶(TS)的经典抗叶酸抑制剂通常需要减少的叶酸摄取系统,以发挥其抗肿瘤作用。另外,这些类似物通过叶酰聚-γ-谷氨酸合成酶(FPGS)被聚谷氨酰化,这防止了类似物从细胞中流出,并通常增加了它们对TS的抑制能力。叶酸吸收系统和FPGS的功能受损是这种抗叶酸药物耐药的潜在原因。我们设计并合成了经典的6-5环稠合类似物N- [4-[(2-氨基-6-甲基-3,4-二氢-4-氧代-7H-吡咯并[2,3- d]嘧啶- (5-基)硫代]-苯甲酰基] -L-谷氨酸(5)和非经典的6-5环稠合类似物2-氨基-6-甲基-5-(吡啶-4-基硫代)-3,4-二氢作为TS抑制剂和抗肿瘤剂的-4-oxo-7H-pyrrolo [2,3- d]嘧啶(6)。类似物5和6的合成是通过将4-巯基苯甲酸乙酯或4-巯基吡啶的钠盐氧化加成至2-(新戊酰氨基)-6-甲基-3,4-二氢-4-氧代-7H-吡咯烷酮而实现的[2,3-d]