175204-39-4Relevant academic research and scientific papers
Development of Potent 3-Br-isoxazoline-Based Antimalarial and Antileishmanial Compounds
Basilico, Nicoletta,Conti, Paola,Coser, Consuelo,Galbiati, Andrea,Parapini, Silvia,Tamborini, Lucia,Taramelli, Donatella,Zana, Aureliano
supporting information, p. 1726 - 1732 (2021/11/01)
Starting from the structure of previously reported 3-Br-isoxazoline-based covalent inhibitors of P. falciparum glyceraldehyde 3-phosphate dehydrogenase, and with the intent to improve their metabolic stability and antimalarial activity, we designed and synthesized a series of simplified analogues that are characterized by the insertion of the oxadiazole ring as a bioisosteric replacement for the metabolically labile ester/amide function. We then further replaced the oxadiazole ring with a series of five-membered heterocycles and finally combined the most promising structural features. All the new derivatives were tested in vitro for antimalarial as well as antileishmanial activity. We identified two very promising new lead compounds, endowed with submicromolar antileishmanial activity and nanomolar antiplasmodial activity, respectively, and a very high selectivity index with respect to mammalian cells.
SO2F2-Mediated one-pot cascade process for transformation of aldehydes (RCHO) to cyanamides (RNHCN)
Ding, Chengrong,Ge, Shuting,Wei, Junjie,Zhang, Guofu,Zhao, Yiyong
, p. 17288 - 17292 (2020/05/18)
A simple, mild and practical cascade process for the direct conversion of aldehydes to cyanamides was developed featuring a wide substrate scope and great functional group tolerability. This method allows for transformations of readily available, inexpensive, and abundant aldehydes to highly valuable cyanamides in a pot, atom, and step-economical manner with a green nitrogen source. This protocol will serve as a robust tool for the installation of the cyanamide moiety in various complicated molecules.
A cascade process for directly converting nitriles (RCN) to cyanamides (RNHCN) via SO2F2-activated Tiemann rearrangement
Zhang, Guofu,Zhao, Yiyong,Ding, Chengrong
supporting information, p. 7684 - 7688 (2019/08/30)
A simple, mild and practical process for the direct conversion of nitriles to cyanamides was newly discovered and exhibited a wide substrate scope as well as great functional group-tolerability (36 examples). In this efficient strategy, the in situ generated amidoximes obtained from the reaction of nitriles with hydroxylamine subsequently underwent Tiemann rearrangement, producing the corresponding cyanamides with great isolated yields under SO2F2. Additionally, the control experiments reportedly shed light on the tentative mechanism involved in the formation and elimination of the key intermediate: a sulfonyl ester.
Structure-activity and structure-property relationships of novel Nrf2 activators with a 1,2,4-oxadiazole core and their therapeutic effects on acetaminophen (APAP)-induced acute liver injury
Xu, Li-Li,Wu, Yu-Feng,Wang, Lei,Li, Cui-Cui,Li, Li,Di, Bin,You, Qi-Dong,Jiang, Zheng-Yu
, p. 1376 - 1394 (2018/09/13)
The antioxidant function induced by Nrf2 protects the liver from damage. We found a novel Nrf2 activator named compound 25 via structural modification of compound 1 we previously reported. In vitro, compound 25 induced Nrf2 transport into the nucleus and protected hepatocyte L02 cells from APAP-induced cytotoxicity via activating the Nrf2-ARE signaling pathway. In vivo, 25 exhibited therapeutic effects in a mouse model of acute liver injury induced by acetaminophen (APAP) by up-regulating Nrf2-dependent antioxidases and down-regulating liver injury markers in serum. Together, these results indicated that 25 is a potent Nrf2/ARE activator both in vitro and in vivo. The drug-like properties of compound 25 further revealed its potential for development as a therapeutic drug against acute liver injury.
Indazole-oxadiazole derivative, medicinal composition containing derivative, and application of derivative in tumor prevention
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Paragraph 0099; 0100; 0115; 0116, (2017/07/25)
The invention discloses an indazole-oxadiazole derivative with the structure represented by general formula a shown in the description, or a pharmaceutically acceptable salt or solvate thereof. In the formula, X is O or N, Y is N, Z is N or O, and all groups are as defined in the description. The invention also discloses a medicinal composition adopting the derivative as an active component, and a use of the derivative. Compounds synthesized in the invention have an HIF-1 inhibition effect, and most of the compounds have a substantial HIF-1 inhibition effect, have strong in-vivo and in-vitro anti-HIF-1 effect on human colorectal carcinoma cell strains (HCT116) and other tumor cell strains, and can be used for treating tumor diseases.
Novel potent HIF-1 inhibitors for the prevention of tumor metastasis: discovery and optimization of 3-aryl-5-indazole-1,2,4-oxadiazole derivatives
Sheng, Rong,Li, Shan,Lin, Guanyu,Shangguan, Shihao,Gu, Yongchuan,Qiu, Ni,Cao, Ji,He, Qiaojun,Yang, Bo,Hu, Yongzhou
, p. 81817 - 81830 (2015/10/12)
Hypoxia inducible factor-1 (HIF-1) is the key transcription factor of cellular response to hypoxia and plays a critical role in tumor metastasis. We describe here the discovery and a structure-activity relationship study of a series of 3-aryl-5-indazole-1,2,4-oxadiazole derivatives as novel HIF-1 inhibitors. The two most promising compounds 4g and 4h inhibit HIF-1 transcription with IC50 values of 0.62 and 0.55 μM in vitro, respectively, and they exhibit more efficient HIF-1 inhibition in xenograft tumors than YC-1, a potential anticancer drug targeting HIF-1. In addition, they also remarkably prevent the hypoxia-driven migration of SKOV3 cells in vitro and tumor metastasis in vivo. Further investigation of the mechanism revealed that the two inhibitors could decrease HIF-1α and VEGF expression. These results suggest that our newly synthesized HIF-1 inhibitors 4g and 4h are potential therapeutic agents with which to treat tumor metastasis.
One-pot synthesis of highly substituted polyheteroaromatic compounds by rhodium(III)-catalyzed multiple C-H activation and annulation
Jayakumar, Jayachandran,Parthasarathy, Kanniyappan,Chen, Yi-Hsiang,Cheng, Chien-Hong,Lee, Tai-Hua,Chuang, Shih-Ching
supporting information, p. 9889 - 9892,4 (2014/11/08)
A new method for the synthesis of highly substituted naphthyridine-based polyheteroaromatic compounds in high yields proceeds through rhodium(III)-catalyzed multiple C-H bond cleavage and C-C and C-N bond formation in a one-pot process. Such highly substituted polyheteroaromatic compounds have attracted much attention because of their unique π-conjugation, which make them suitable materials for organic semiconductors and luminescent materials. Furthermore, a possible mechanism, which involves multiple chelation-assisted ortho C-H activation, alkyne insertion, and reductive elimination, is proposed for this transformation.
COMPOUNDS HAVING AN ETHR INHIBITING ACTIVITY - USE OF SAID COMPOUNDS AS DRUGS - PHARMACEUTICAL COMPOSITION AND PRODUCT CONTAINING SAID COMPOUNDS
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Page/Page column 10, (2013/05/21)
The present invention relates to compounds of Formula (I), wherein R1 is chosen among the following radicals : (II); (III); (IV), (V), (VI) (VII) and n= 1 or 2 and m=1 or 2 with the proviso that m=2 when R1 is (VIII). The present invention also relates to the use thereof as drugs, more particularly in the treatment of mycobacterial infections and more particularly in the treatment of tuberculosis.
Synthesis and physicochemical characterization of novel phenotypic probes targeting the nuclear factor-kappa B signaling pathway
Hershberger, Paul M.,Peddibhotla, Satyamaheshwar,Sessions, E. Hampton,Divlianska, Daniela B.,Correa, Ricardo G.,Pinkerton, Anthony B.,Reed, John C.,Roth, Gregory P.
supporting information, p. 900 - 907 (2013/07/11)
Activation of nuclear factor-kappa B (NF-κB) and related upstream signal transduction pathways have long been associated with the pathogenesis of a variety of inflammatory diseases and has recently been implicated in the onset of cancer. This report provi
Ethionamide boosters. 2. Combining bioisosteric replacement and structure-based drug design to solve pharmacokinetic issues in a series of potent 1,2,4-oxadiazole EthR inhibitors
Flipo, Marion,Desroses, Matthieu,Lecat-Guillet, Nathalie,Villemagne, Baptiste,Blondiaux, Nicolas,Leroux, Florence,Piveteau, Catherine,Mathys, Vanessa,Flament, Marie-Pierre,Siepmann, Juergen,Villeret, Vincent,Wohlk?nig, Alexandre,Wintjens, René,Soror, Sameh H.,Christophe, Thierry,Jeon, Hee Kyoung,Locht, Camille,Brodin, Priscille,Déprez, Benoit,Baulard, Alain R.,Willand, Nicolas
experimental part, p. 68 - 83 (2012/03/10)
Mycobacterial transcriptional repressor EthR controls the expression of EthA, the bacterial monooxygenase activating ethionamide, and is thus largely responsible for the low sensitivity of the human pathogen Mycobacterium tuberculosis to this antibiotic.
