结构类型3和4的4 H -3,1-苯并恶嗪-4-酮可通过环化反应获得。通过Wohl-Ziegler溴化和随后与亚磷酸三烷基酯的Michaelis-Arbuzow反应来实现膦酸酯基团的引入。对离体的左心房,回肠标本和Langendorff心脏的药理研究以及对麻醉大鼠的体内循环研究显示,膦酸酯4具有钙拮抗作用。而2-(芳基乙烯基)苯并恶嗪酮引起明显的负性变力作用,化合物3e 对平滑肌组织表现出松弛作用,并显着增加了通过Langendorff心脏的冠状动脉血流量。
The syntheses and SAR studies of various quinazolinone compounds are described for the dual inhibition of Pgp and MRP1 in multidrug resistance. (C) 2002 Elsevier Science Ltd. All rights reserved.
2-Aryl-substituted 4<i>H</i>-3,1-benzoxazin-4-ones as novel active substances for the cardiovascular system
作者:Ulrich Rose
DOI:10.1002/jhet.5570280836
日期:1991.12
4H-3,1-Benzoxazin-4-ones of the structural types 3 and 4 are accessible by cyclization reactions. The introduction of the phosphonate group was achieved by way of Wohl-Ziegler bromination and subsequent Michaelis-Arbuzow reaction with a trialkyl phosphite. Pharmacological investigations on isolated left atria, ileum specimens, and Langendorff hearts as well as in vivo circulatory studies on anesthetized
结构类型3和4的4 H -3,1-苯并恶嗪-4-酮可通过环化反应获得。通过Wohl-Ziegler溴化和随后与亚磷酸三烷基酯的Michaelis-Arbuzow反应来实现膦酸酯基团的引入。对离体的左心房,回肠标本和Langendorff心脏的药理研究以及对麻醉大鼠的体内循环研究显示,膦酸酯4具有钙拮抗作用。而2-(芳基乙烯基)苯并恶嗪酮引起明显的负性变力作用,化合物3e 对平滑肌组织表现出松弛作用,并显着增加了通过Langendorff心脏的冠状动脉血流量。
Design, Synthesis, and Pharmacological Characterization of <i>N</i>-(4-(2 (6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1<i>H</i>)yl)ethyl)phenyl)quinazolin-4-amine Derivatives: Novel Inhibitors Reversing P-Glycoprotein-Mediated Multidrug Resistance
P-glycoprotein (P-gp)-mediated multidrug resistance (MDR) is a principal obstacle for successful cancer chemotherapy. A novel P-gp inhibitor with a quinazoline scaffold, 12k, was considered to be the most promising for in-depth study. 12k possessed high potency (EC50 = 57.9 ± 3.5 nM), low cytotoxicity, and long duration of activity in reversing doxorubicin (DOX) resistance in K562/A02 cells. 12k also