21715-13-9Relevant academic research and scientific papers
Heat Resistance and Electrophysical Characteristics of Polyheteroarylenes and Ferroelectric–Polymer Film Composites Based on Them
Bol’shakov, M. N.,Chigirev, D. A.,Lebedeva, G. K.,Marfichev, A. Yu.,Rudaya, L. I.,Shagaiko, Yu. V.,Sokolova, I. M.
, p. 188 - 196 (2020)
Abstract: Structurally related poly(amido-o-hydroxy amides) derived from 5,5-methylenebis(2-aminophenol) with tetramethylsiloxane and heteroaromatic (benzoxazole and benzotriazole) fragments incorporated in the second amine component or formed by polyheterocyclization of the corresponding prepolymers were prepared. The effect of modifying fragments introduced into the base poly(o-hydroxy amide) on the heat resistance of powders and films and of films of photosensitive compounds based on the synthesized polymers with the naphthoquinone diazide component was analyzed. The electrophysical parameters of the polymer films and film composites with a nanodispersed ferroelectric filler, (PZT: ceramic powder with the composition Pb0.81Sr0.04Na0.075Bi0.075(Zr0.58 Ti0.42)O3, Russian brand PZT-1), prepared on the basis of modified polymer binders, were determined. Introduction of 20 mol % sulfur-containing fragments into the polymer binder ensures a 50–65?C increase in the heat resistance for all types of films without increasing the level of the dielectric loss for the composite coatings.
Design, synthesis and biological evaluation of benz-fused five-membered heterocyclic compounds as tubulin polymerization inhibitors with anticancer activities
Komuraiah, Buduma,Ren, Yichang,Xue, Mingming,Cheng, Binbin,Liu, Jin,Liu, Yao,Chen, Jianjun
, p. 1109 - 1116 (2021/03/16)
A series of benz-fused five-membered heterocyclic compounds were designed and synthesized as novel tubulin inhibitors targeting the colchicine binding site. Among them, compound 4d displayed the highest antiproliferative activity against four cancer cell lines with an IC50 value of 4.9?μM in B16-F10 cells. Compound 4d effectively inhibited tubulin polymerization in vitro (IC50 of 13.1?μM). Further, 4d induced cell cycle arrest in G2/M phase. Finally, 4d inhibited the migration of cancer cells in a dose-dependent manner. In summary, these results suggest that compound 4d represents a new class of tubulin inhibitors deserving further investigation.
