Discovery of new imidazotetrazinones with potential to overcome tumor resistance
作者:Helen S. Summers、William Lewis、Huw E.L. Williams、Tracey D. Bradshaw、Christopher J. Moody、Malcolm F.G. Stevens
DOI:10.1016/j.ejmech.2023.115507
日期:2023.9
We describe the design, organic synthesis, and characterization, including X-ray crystallography, of a series of novel analogues of the clinically used antitumoragent temozolomide, together with their biological evaluation. The work has resulted in the discovery of a new series of anticancer imidazotetrazines that offer the potential to overcome the resistance mounted by tumors against temozolomide
我们描述了临床使用的抗肿瘤药物替莫唑胺的一系列新型类似物的设计、有机合成和表征(包括 X 射线晶体学),以及它们的生物学评价。这项工作发现了一系列新的抗癌咪唑四嗪,它们有可能克服肿瘤对替莫唑胺的耐药性。合理设计的化合物包含炔丙基烷基化部分和噻唑环作为甲酰胺的等排替代物,易于合成(克级),表现出明确的固态结构,并增强对人类肿瘤细胞系的生长抑制活性,包括表达 MGMT 和 MMR 缺陷的细胞系,具有赋予肿瘤抗性的分子特征。细胞增殖数据通过克隆细胞存活测定得到证实,并进行DNA流式细胞术分析以确定新类似物对细胞周期进展的影响。详细的核磁共振氢谱研究表明,新试剂在溶液中稳定,并证实了其作用机制。炔丙基和噻唑取代基显着提高了效力和理化、药物代谢和渗透性特性,表明应优先考虑噻唑进行进一步的临床前评估。
Verkade; Lieste, Recueil des Travaux Chimiques des Pays-Bas, 1946, vol. 65, p. 912,918
作者:Verkade、Lieste
DOI:——
日期:——
Synthesis of a dysidiolide-inspired compound library and discovery of acetylcholinesterase inhibitors based on protein structure similarity clustering (PSSC)
作者:Michael Scheck、Marcus A. Koch、Herbert Waldmann
DOI:10.1016/j.tet.2008.02.106
日期:2008.5
then subjected to aldol condensation reactions with different aldehydes leading to exocyclic E-configured olefins. Further diversity-increasing transformations on the solid support included Sonogashira, Suzuki, and Heck reactions, Cu-catalyzed conjugate addition and Grignard reactions, alkylation reactions in the α-position to a ketone, Wittig reactions, and reductive animations. In total, 483 compounds