使用有效的钯-化合物以高收率合成了一系列新的4-碱基聚吡咯并[1,2- a ]喹喔啉衍生物,生物碱chimanine B的原始和结构类似物以及先前描述的4-烯基吡咯并[1,2- a ]喹喔啉。催化了铃木-宫浦的交叉偶联反应。测试了这些新化合物对三种利什曼原虫属物种的体外抗寄生虫活性。株。生物学结果表明,它对大麦草,墨西哥麦草和多诺氏乳杆菌的前鞭毛体形式具有活性,IC 50范围为1.2至14.7μM。在尝试调查我们的吡咯并[1,2- a]喹喔啉衍生物是一种广谱抗原生动物化合物,对一种布鲁氏锥虫菌株具有活性,还研究了W2和3D7恶性疟原虫菌株。同时,在鼠J774和人HepG2细胞系上评估了这些分子的体外细胞毒性。这些新型合成化合物的结构-活性关系在此进行了讨论。
Polycondensed Heterocycles. VII. A Convenient Synthesis of Pyrrolo[1,2-a]quinoxaline Derivatives by Intramolecular Aromatic Nucleophilic Displacement
作者:G. Campiani、V. Nacci、F. Corelli、M. Anzini
DOI:10.1080/00397919108021054
日期:1991.8
Abstract 4-(4-Methyl-1-piperazinyl)-7-trifluoromethylpyrrolo[1,2-a]quinoxaline (CGS 12066B) and related analogs were prepared in good overall yield through a reaction sequence involving as a key step the intramolecular substitution of aromatic fluoride or nitro groups by a carboxamide moiety.
The present invention relates to a compound selected from these of formula (I): ##STR1## in which A and R.sub.1 are as defined in the description, and medicinal product containing the same which is useful for treating a disorder linked to the 5-HT.sub.3 receptors.
Design and Synthesis of Piperazinylpyridine Derivatives as Novel 5-HT1A Agonists/5-HT3 Antagonists for the Treatment of Irritable Bowel Syndrome (IBS)
作者:Akira Asagarasu、Teruaki Matsui、Hiroyuki Hayashi、Satoru Tamaoki、Yukinao Yamauchi、Michitaka Sato
DOI:10.1248/cpb.57.34
日期:——
We have prepared a series of piperazinylpyridine derivatives for the treatment of irritable bowel syndrome (IBS). These compounds, which were designed by pharmacophore analysis, bind to both serotonin subtype 1A (5-HT1A) and subtype 3 (5-HT3) receptors. The nitrogen atom of the isoquinoline, a methoxy group and piperazine were essential to the pharmacophore for binding to these receptors. We also synthesized furo- and thienopyridine derivatives according to structure–activity relationship analyses. Compound 17c (TZB-20810) had high affinities to these receptors and exhibited 5-HT1A agonistic activity and 5-HT3 antagonistic activity concurrently, and is a promising drug for further development in the treatment of IBS.
Following our search for antimalarial compounds, novel series of piperazinylalcohol pyrrolo[ 1,2-a]quinoxalinederivatives 1-2 were synthesized from 2-nitroaniline or 2-amino-3- nitrophenol and tested for in vitro activity upon the intraerythrocytic stage of W2 and 3D7 Plasmodium falciparum strains. Biological results showed good antimalarial activity with IC50 ranging from 0.3 to 21.1 µM. In attempting
Synthesis of new piperazinyl-pyrrolo[1,2-<i>a</i>]quinoxaline derivatives as inhibitors of <i>Candida albicans</i> multidrug transporters by a Buchwald–Hartwig cross-coupling reaction
作者:Jean Guillon、Shweta Nim、Stéphane Moreau、Luisa Ronga、Solène Savrimoutou、Elisabeth Thivet、Mathieu Marchivie、Attilio Di Pietro、Rajendra Prasad、Marc Le Borgne
DOI:10.1039/c9ra09348f
日期:——
Two series of piperazinyl-pyrrolo[1,2-a]quinoxaline derivatives were prepared via a Buchwald–Hartwig cross-coupling reaction and then evaluated for their ability to inhibit the drug efflux activity of two Candida albicans transporters.