471929-86-9Relevant articles and documents
Structural variations of 1-(4-(phenoxymethyl)benzyl)piperidines as nonimidazole histamine H3 receptor antagonists
Miko, Tibor,Ligneau, Xavier,Pertz, Heinz H.,Arrang, Jean-Michel,Ganellin, C. Robin,Schwartz, Jean-Charles,Schunack, Walter,Stark, Holger
, p. 2727 - 2736 (2004)
Recent bioisoteric replacements in histamine H3 receptor ligands with an exchange of the imidazole moiety by a piperidino group as well as of the trimethylene chain in 4-((3-phenoxy)propyl)-lH-imidazole derivatives (proxifan class) by an α,α′-xylendiyl linker represents the starting point in the development of 1-(4-(phenoxymethyl)benzyl) piperidines as a new class of nonimidazole histamine H3 receptor antagonists. According to different strategies in optimization of imidazole-containing antagonists the central benzyl phenyl ether moiety was replaced by numerous other polar functionalities. Additionally, the ortho- and meta-analogues of the lead were synthesized to determine the influence of the position of the piperidinomethyl substituent. The new compounds were tested in an in vitro binding assay for their affinities for cloned human H3 receptors stably expressed in CHO-K1 cells and for their oral in vivo potencies brain in a functional screening assay in the brain of mice. Additionally, activities of selected compounds were determined in the guinea-pig ileum functional test model. In contrast to the analogues ortho-substituted compounds all other compounds maintained respectable affinities for the human H 3 receptor (-logKi values 6.3-7.5). Despite the results from other classes of compounds the 4-methyl substituted derivatives generally displayed higher affinities than the corresponding 4-chloro substituted compounds. In vivo only the inverse phenyl benzyl ether (3) showed worthwhile antagonist potencies.
IMIDAZO [2, 1-F] [1, 2, 4] TRIAZIN-4-AMINE DERIVATIVES AS TLR7 AGONIST
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, (2020/08/22)
Disclosed herein is an imidazo [2, 1-f] [1, 2, 4] triazin-4-amine derivative or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof useful as a TLR7 agonist, and a pharmaceutical composition comprising the same. Also disclosed herein is a method of treating cancer using the imidazo [2, 1-f] [1, 2, 4] triazin-4-amine derivative or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof as TLR7 agonist.
Design, synthesis and biological evaluation of novel 4-anlinoquinazoline derivatives as EGFR inhibitors with the potential to inhibit the gefitinib-resistant nonsmall cell lung cancers
Wang, Caolin,Xu, Shan,Peng, Liang,Zhang, Bingliang,Zhang, Hong,Hu, Yingying,Zheng, Pengwu,Zhu, Wufu
, p. 204 - 218 (2019/01/03)
A series of quinazoline derivatives with benzylidene hydrazine carboxamide were designed and synthesised as EGFR inhibitors. Most compounds exhibited exceptional anti-proliferative activity against A549, HepG2, MCF-7 and H1975 cells. Furthermore, six compounds demonstrated excellent inhibition activity against EGFRWT with the IC50 value both less than 2 nM. Among the six compounds, 44 exhibited the strongest activity (0.4 nM) and potently inhibited EGFRL858R/T790M (0.1 μM). Excitingly, the most potent compound 14 showed excellent enzyme inhibitory activity with 6.3 nM and 8.4 nM for both EGFRWT and EGFRT790M/L858R. The result of AO single staining and Annexin V/PI staining showed that the compound 14 and 44 could induce remarkable apoptosis of A549 cells. The compound 14 arrested the cell cycle at the S phase and compound 44 arrested the cell cycle at the G0 phase in A549 cells. These preliminary results demonstrate that compound 14 and 44 may be promising lead compound-targeting EGFR.
