包含苯(BPMA),噻吩(BTMA)和吲哚(BIMA)的二芳基马来酸酐衍生物显示出多种不同的荧光:BIMA的红色发射,BPMA的蓝色聚集诱导发射(AIE)和绿色的聚集引起的猝灭(ACQ)溶液和固态BTMA的双态发射(DSE)。理论计算和晶体结构分析表明,分子内和分子间的相互作用是造成它们不同发射行为的原因。通过修饰BPMA和BPMA的结构,可以首次开发一系列具有全色发射的DSE活性分子。BIMA。有趣的是,BTMA和BPMA显示多刺激响应发光具有高对比度(Δ λ EM > 100纳米)和在二氯甲烷中的一个不寻常的光致变色现象,将其用于构建可重写数据存储器和模拟物分子的逻辑运算(4-至-2编码器和1:2解复用器)。
New heterocycles of 2,3-diaryl-substituted maleic hydrazides
作者:Hsiencheng Shih[]、Renshuay J. Shih、Dennis A. Carson
DOI:10.1002/jhet.631
日期:2011.11
2,3‐Diaryl‐substituted maleicanhydrides were prepared by a modified one‐pot synthesis of Perkin condensation using mixed sodium salts of arylglyoxylic acid and arylacetic acid with aceticanhydride in 1,4‐dioxane. The treatment of these anhydrides with ammonium bicarbonate, or methanolic hydrazine, offered the corresponding 2,3‐diaryl‐substituted maleimides and maleic hydrazides (4,5‐diaryl‐substituted
A series of 2,3-heteroarylmaleimides 9 and polyheterocondensed imides 12 were prepared in good yields and short reaction time using a very efficient procedure consisting in the condensation of the corresponding anhydrides and N,N-diethylethylenediamine and microwave heating. The antiproliferative activity of the novel molecules was tested against human tumor cells (NCI-H460 lung carcinoma) and rat aortic smooth muscle cells (SMCs). The IC50 values for the novel molecules ranged from 0.08 to 13.9 mu M in SMCs, and from 0.84 to 9 mu M in the tumor cell line. The activity pro. le for compounds 9 and 12 is comparable to that obtained for amonafide in NCI-H460, except for fused imides 12b,i which proved to be about 10-fold more potent. Whereas, in rat SMCs, only the compound 12b was shown to be 10-fold more potent than amonafide. Instead 12c is equipotent to amonafide. These results suggest that the extended pi-system and the kind of heteroatom are essential in the binding with the molecular target. (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis, structural, and biological evaluation of bis-heteroarylmaleimides and bis-heterofused imides
作者:Nicola Ferri、Tiziano Radice、Manuela Antonino、Egle Maria Beccalli、Stella Tinelli、Franco Zunino、Alberto Corsini、Graziella Pratesi、Enzio M. Ragg、Maria Luisa Gelmi、Alessandro Contini
DOI:10.1016/j.bmc.2011.08.016
日期:2011.9
Bis-2,3-heteroarylmaleimides and polyheterocondensed imides joined through nitrogen atoms of the N, N'-bis(ethyl)-1,3-propanediamine linker were prepared from substituted maleic anhydrides and symmetrical diamines in good to satisfactory yields and short reaction times using microwave heating. The novel molecules were shown to inhibit proliferation of human tumor cells (NCI-H460 lung carcinoma) and rat aortic smooth muscle cells (SMCs) with variable potencies. Compound 11a, the most potent one of the series, showed IC50 values comparable to those observed for the leading molecule elinafide in both cell lines, but with a higher selectivity toward human tumor cells. Compound 11a affected G1/S phase transition of the cell cycle, showed in vitro DNA intercalating activity and in vivo antitumor activity. A thorough structural analysis of the 11a-DNA complex was also made by mean of NMR and computational techniques. (C) 2011 Elsevier Ltd. All rights reserved.