Tricyclic phenothiazine and phenoselenazine derivatives as potential multi-targeting agents to treat Alzheimer's disease
作者:Gary Tin、Tarek Mohamed、Nyasha Gondora、Michael A. Beazely、Praveen P. N. Rao
DOI:10.1039/c5md00274e
日期:——
A group of tricyclic phenothiazines (6a, 6b and 7a–l) and phenoselenazines (12a, 12b and 13a–l) was designed, synthesized and evaluated as multi-targeting ligands aimed at the cholinergic, amyloid and oxidative stress pathways of Alzheimer's disease. The phenothiazine derivative 7j (2-chloro-10H-phenothiazin-10-yl-(4-methoxyphenyl)methanone) was identified as the best dual, non-selective cholinesterase
设计,合成和评估了一组三环吩噻嗪(6a,6b和7a-1)和吩硒嗪(12a,12b和13a-1),作为针对阿尔茨海默氏病的胆碱能,淀粉样蛋白和氧化应激途径的多目标配体。吩噻嗪衍生物7j(2-氯-10 H-吩噻嗪-10-基-(4-甲氧基苯基)甲酮)被确定为最佳的双重非选择性胆碱酯酶抑制剂(AChE IC 50 = 5.9±0.6μM; BuChE IC 50 = 5.3±0.5μM),而在相应的吩硒嗪系列中,13j(2-氯-10 H-phenoselenazin-10-yl-((4-methoxyphenyl)methanone)表现出良好的非选择性胆碱酯酶抑制作用(AChE IC 50 = 5.8±0.4μM; BuChE IC 50 = 4.9±0.5μM)。有趣的是,N-10未取代的吩噻嗪6a(AChE IC 50 = 7.3±0.6μM; BuChE IC 50 = 5.8±0.5μM;Aβ1–42聚集抑制率=
Selective reversible inhibition of human butyrylcholinesterase by aryl amide derivatives of phenothiazine
作者:Sultan Darvesh、Robert S. McDonald、Katherine V. Darvesh、Diane Mataija、Sarah Conrad、Geraldine Gomez、Ryan Walsh、Earl Martin
DOI:10.1016/j.bmc.2007.06.060
日期:2007.10
Evidence suggests that specific inhibition of butyrylcholinesterase may be an appropriate focus for the development of more effective drugs to treat dementias such as Alzheimer's disease. Butyrylcholinesterase is a co-regulator of cholinergic neuro-transmission and its activity is increased in Alzheimer's disease, and is associated with all neuropathological lesions in this disease. Some selective butyrylcholinesterase inhibitors have already been reported to increase acetylcholine levels and to reduce the formation of abnormal amyloid found in Alzheimer's disease. Synthesized N-(10)-aryl and N-(10)-alkylaryl amides of phenothiazine are specific inhibitors of butyrylcholinesterase. In some cases, inhibition constants in the nanomolar range are achieved. Enzyme specificity and inhibitor potency of these molecules can be related to molecular volumes, steric and electronic factors. Computed logP values indicate high potential for these compounds to cross the blood-brain barrier. Use of such butyrylcholinesterase inhibitors could provide direct evidence for the importance of this enzyme in the normal nervous system and in Alzheimer's disease. (C) 2007 Elsevier Ltd. All rights reserved.
Preparation of phenothiazine derivatives as possible anthelmintics
作者:Alexander Mackie、A. Anthony Cutler
DOI:10.1039/jr9540002577
日期:——
<i>N</i>-Benzoylated Phenoxazines and Phenothiazines: Synthesis, Antiproliferative Activity, and Inhibition of Tubulin Polymerization
作者:Helge Prinz、Behfar Chamasmani、Kirsten Vogel、Konrad J. Böhm、Babette Aicher、Matthias Gerlach、Eckhard G. Günther、Peter Amon、Igor Ivanov、Klaus Müller
DOI:10.1021/jm200436t
日期:2011.6.23
synthesized and evaluated for antiproliferativeactivity, interaction with tubulin, and cell cycle effects. Potent inhibitors of multiple cancer cell lines emerged with the 10-(4-methoxybenzoyl)-10H-phenoxazine-3-carbonitrile (33b, IC50 values in the range of 2–15 nM) and the isovanillic analogue 33c. Seventeen compounds strongly inhibited tubulinpolymerization with activities higher than or comparable