Pyrazolo[4,3-<i>d</i>]pyrimidine Bioisostere of Roscovitine: Evaluation of a Novel Selective Inhibitor of Cyclin-Dependent Kinases with Antiproliferative Activity
作者:Radek Jorda、Libor Havlíček、Iain W. McNae、Malcolm D. Walkinshaw、Jiří Voller、Antonín Šturc、Jana Navrátilová、Marek Kuzma、Martin Mistrík、Jiří Bártek、Miroslav Strnad、Vladimír Kryštof
DOI:10.1021/jm200064p
日期:2011.4.28
a new potent CDK2 inhibitor with pyrazolo[4,3-d]pyrimidine scaffold has been synthesized, characterized, and evaluated in cellular and biochemical assays. 7-Benzylamino-5(R)-[2-(hydroxymethyl)propyl]amino-3-isopropyl-1(2)H-pyrazolo[4,3-d]pyrimidine, compound 7, was prepared as a bioisostere of the well-known CDK inhibitor roscovitine. An X-ray crystal structure of compound 7 bound to CDK2 has been determined
已经建议用小分子抑制细胞周期蛋白依赖性激酶(CDK)作为一种治疗癌症的策略,这是基于许多人类肿瘤中常见的CDK失控。在这里,已经合成了具有吡唑并[4,3- d ]嘧啶骨架的新型有效CDK2抑制剂,并在细胞和生化测定中进行了评估。制备化合物7的7-苄基氨基-5(R)-[2-(羟甲基)丙基]氨基-3-异丙基-1(2)H-吡唑并[4,3- d ]嘧啶,作为孔的生物等排体已知的CDK抑制剂roscovitine。化合物7的X射线晶体结构已确定与CDK2的结合,揭示了与roscovitine相似的结合模式。化合物7的蛋白激酶选择性谱及其生物学效应(细胞周期停滞,视网膜母细胞瘤蛋白的去磷酸化,肿瘤抑制蛋白p53的积累,细胞凋亡的诱导,同源重组的抑制)与CDK作为主要作用方式的抑制作用一致。重要的是,由于吡唑并[4,3- d ]嘧啶7的抗癌活性超过了其生物等排物roscovitine的抗癌活性,因此本文