Inhibitors of human purine nucleoside phosphorylase. Synthesis of pyrrolo[3,2-d]pyrimidines, a new class of purine nucleoside phosphorylase inhibitors as potentially T-cell selective immunosuppressive agents. Description of 2,6-diamino-3,5-dihydro-7-(3-thienylmethyl)-4H-pyrrolo[3,2-d]pyrimidin-4-one (CI-972)
作者:Jagadish C. Sircar、Catherine R. Kostlan、Richard B. Gilbertsen、Mary K. Bennett、Mi K. Dong、W. J. Cetenko
DOI:10.1021/jm00087a015
日期:1992.5
Purine nucleoside phosphorylase (PNP) is a purine-metabolizing enzyme in the purine cascade and has been a target for drug design for sometime. A series of potent human PNP inhibitors, pyrrolo[3,2-d]pyrimidines (9-deazaguanines), has been synthesized and evaluated in the enzyme assay and in the cell line assay using MOLT-4 (T-cell) and MGL-8 (B-cell) lymphoblasts for selectivity. One of the compounds
嘌呤核苷磷酸化酶(PNP)是嘌呤级联反应中的嘌呤代谢酶,在一段时间内一直是药物设计的目标。已经合成了一系列有效的人类PNP抑制剂吡咯并[3,2-d]嘧啶(9-脱氮鸟嘌呤),并在酶检测和细胞系检测中使用MOLT-4(T细胞)和MGL- 8(B细胞)淋巴母细胞具有选择性。发现一种化合物2,6-二氨基-3,5-二氢-7-(3-噻吩甲基)-4H-吡咯并[3,2-d]嘧啶-4-酮(11c; CI-972)成为Ki = 0.83 microM的PNP的中度有效,竞争性和可逆抑制剂。还发现它对MOLT-4淋巴母细胞具有选择性的细胞毒性(IC50 = 3.0 microM),但对MGL-8淋巴母细胞没有细胞毒性,并进行了进一步评估。化合物11c(CI-972)正在临床中开发。