20143-42-4Relevant academic research and scientific papers
Synthesis, biological evaluation, and structure-activity relationships of potent noncovalent and nonpeptidic cruzain inhibitors as anti-Trypanosoma cruzi agents
Ferreira, Rafaela S.,Dessoy, Marco A.,Pauli, Ivani,Souza, Mariana L.,Krogh, Renata,Sales, Ana I. L.,Oliva, Glaucius,Dias, Luiz C.,Andricopulo, Adriano D.
supporting information, p. 2380 - 2392 (2014/04/17)
The development of cruzain inhibitors has been driven by the urgent need to develop novel and more effective drugs for the treatment of Chagas' disease. Herein, we report the lead optimization of a class of noncovalent cruzain inhibitors, starting from an inhibitor previously cocrystallized with the enzyme (Ki = 0.8 μM). With the goal of achieving a better understanding of the structure-activity relationships, we have synthesized and evaluated a series of over 40 analogues, leading to the development of a very promising competitive inhibitor (8r, IC50 = 200 nM, Ki = 82 nM). Investigation of the in vitro trypanocidal activity and preliminary cytotoxicity revealed the potential of the most potent cruzain inhibitors in guiding further medicinal chemistry efforts to develop drug candidates for Chagas' disease.
Synthesis and biological evaluation of new quinoxaline derivatives of ICF01012 as melanoma-targeting probes
El Aissi, Radhia,Liu, Jianrong,Besse, Sophie,Canitrot, Damien,Chavignon, Olivier,Chezal, Jean-Michel,Miot-Noirault, Elisabeth,Moreau, Emmanuel
supporting information, p. 468 - 473 (2014/06/09)
The aim of this study was the synthesis and pharmacokinetic selection of a best melanin-targeting ligand for addressing anticancer agents to pigmented melanoma. Seven quinoxaline carboxamide derivatives were synthesized and radiolabeled with iodine-125. Biodistribution studies of compounds [ 125I]1a-g performed in melanoma-bearing mice tumor showed significant tumor uptake (range 2.43-5.68%ID/g) within 1 h after i.v. injection. Fast clearance of the radioactivity from the nontarget organs mainly via the urinary system gave high tumor-to-blood and tumor-to-muscle ratios. Given its favorable clearance and high tumor-melanoma uptake at 72 h, amide 1d was the most promising melanoma-targeting ligand in this series. Compound 1d will be used as building block for the design of new melanoma-selective drug delivery systems.
Copper-catalyzed one-pot synthesis of 2H-1,4-benzoxazin-3-(4H)-ones from 2-(o-haloaryloxy)acyl chlorides and primary amines
Hu, Qunxian,Xia, Ziming,Fan, Ling,Zheng, Jiening,Wang, Xiaoxia,Lv, Xin
, p. 129 - 142 (2012/05/04)
A facile and efficient Cu(I)-catalyzed one-pot synthesis of 2H-1,4-benzoxazin-3-(4H)-one derivatives has been developed. The condensation between 2-(o-haloaryloxy)acyl chlorides and primary amines followed by Cu(I)-catalyzed intramolecular C-N bond coupling afforded a variety of 2H-1,4-benzoxazin-3-(4H)-ones in good to excellent yields. Diversified substitutents on the 4-position could be conveniently introduced. ARKAT-USA, Inc.
