41298-85-5Relevant academic research and scientific papers
One pot synthesis of α-N-heteroaryl ketone derivatives from aryl ketones using aqueous NaICl2
Ghodse, Shrikant M.,Hatvate, Navnath T.,Telvekar, Vikas N.
supporting information, (2021/12/08)
A simple and efficient method for the synthesis of α-heteroaryl ketones from aryl ketones and amine using aqueous sodium dichloroiodate is established. This method is mild, operationally simple, has a short reaction time, and easy workup procedure to afford the corresponding α-N-heteroaryl ketone derivatives in moderate to good yield.
Small-Molecule Activator of UNC-51-Like Kinase 1 (ULK1) That Induces Cytoprotective Autophagy for Parkinson's Disease Treatment
Ouyang, Liang,Zhang, Lan,Zhang, Shouyue,Yao, Dahong,Zhao, Yuqian,Wang, Guan,Fu, Leilei,Lei, Peng,Liu, Bo
supporting information, p. 2776 - 2792 (2018/04/23)
UNC-51-like kinase 1 (ULK1), the yeast Atg1 ortholog, is the sole serine-threonine kinase and initiating enzyme in autophagy, which may be regarded as a target in Parkinson's disease (PD). Herein, we discovered a small molecule 33i (BL-918) as a potent activator of ULK1 by structure-based drug design. Subsequently, some key amino acid residues (Arg18, Lys50, Asn86, and Tyr89) were found to be crucial to the binding pocket between ULK1 and 33i by site-directed mutagenesis. Moreover, we found that 33i induced autophagy via the ULK complex in SH-SY5Y cells. Intriguingly, this activator displayed a cytoprotective effect on MPP+-treated SH-SY5Y cells, as well as protected against MPTP-induced motor dysfunction and loss of dopaminergic neurons by targeting ULK1-modulated autophagy in mouse models of PD. Together, these results demonstrate the therapeutic potential to target ULK1, and 33i, the novel activator of ULK1, may serve as a candidate drug for future PD treatment.
Expeditious one-pot synthesis of C3-piperazinyl-substituted quinolines: Key precursors to potent c-Met inhibitors
Wang, Yuanxiang,Ai, Jing,Liu, Gang,Geng, Meiyu,Zhang, Ao
supporting information; scheme or table, p. 5930 - 5933 (2011/10/08)
An effective one-pot synthesis of quinolines bearing diverse C3-piperazinyl functions was developed by using a modified Friedlaender's protocol. The method not only enables the synthesis of our early reported c-Met inhibitor on a large scale, but also provides a way to generate novel multi-substituted quinolines for further structure-activity relationship (SAR) study.
Epoxyethane-/ethynesulfonamides with antifilarial activities degradation kinetics and inhibitory effect on filarial malate dehydrogenase and lactate dehydrogenase
Radembino, Nathalie,Loiseau, Philippe M.,Dessalles, Marie-Christine,Marchat, Laurence,Bories, Christian,Gayral, Philippe,Mahuzier, Georges
, p. 294 - 299 (2007/10/03)
Some eppxyethane-/ethynesulfonamides had shown strong filaricidal activity with inconstant reproducibility as a result of a lack of stability in aqueous solution. The degradation in hydroxylic and aprotic solutions of two epoxyethanesulfonamides and one ethynesulfonamide was investigated using TLC, HPLC, GC and mass spectrometry. For both epoxydes, the degradation rate followed first-order kinetics and was more rapid in hydroxylic than in aprotic solutions. The degradation increased with the temperature whereas it was not modified with and without light exposure. Four kinds of degradation products were found: the first one involved the oxidation of the epoxyde bond, the second the breaking of the N-S bond, the third a desulfonation product and the fourth was not identified. In contrast, the stability of ethynesulfonamide was better than those of epoxyethanesulfonamide. These results suggest that epoxyethanesulfonamides should be kept at + 4 °C before being injected to animals during the study of biological activity. Since epoxyde compounds are known to have inhibitory effects on parasite energy metabolism enzymes, the compounds were evaluated on two major filarial enzymes: lactate dehydrogenase (LDH) and cytoplasmic malate dehydrogenase (MDH). Both epoxyethanesulfonamides showed only a slight inhibitory effect on filarial LDH and MDH confirming the evidence that the main mode of action of these compounds remains to discover. Moreover, ethynesulfonamide and the degradation products of both epoxyethanesulfonamides had no effect on LDH and MDH.
New antifilarial agents. 1. Epoxy sulfonamides and ethynesulfonamides
Brienne,Varech,Leclercq,Jacques,Radembino,Dessalles,Mahuzier,Gueyouche,Bories,Loiseau,Gayral
, p. 2232 - 2239 (2007/10/02)
Two series of 2-substituted 1,2-epoxyethanesulfonamides 2 and ethynesulfonamides 5 were synthesized and evaluated for their antifilarial activity. The trans epoxides 2T were stereospecifically prepared by a Darzens reaction between aldehydes and halomethanesulfonamides. The cis isomers 2c were obtained from ethynesulfonamides 5 by semihydrogenation followed by KOCl epoxidation. 2-Substituted ethynesulfonamides 5 were synthesized from appropriate trans-ethenesulfonamides by a bromination/dehydrobromination sequence. These products, as well as several synthetic intermediates, were evaluated for antifilarial activity against Molinemia dessetae either in vivo in its natural host, the rodent Proechimys oris, or in vitro by a new test using cultures of the infective larvae. Most of the epoxides 2T and acetylenic derivatives 5 bearing a 2-aryl substituent were active in vitro. Among these compounds, four epoxides 2T and one acetylenic derivative 5 showed marked macrofilaricidal activity in vivo without any microfilaricidal activity. The differences between the in vivo and in vitro results may be due, in part, to the low chemical stability of the epoxy sulfonamides 2T. Despite this limitation, the activities observed in this reliable animal model suggest further development and testing of both series 2T and 5 as macrofilaricides.
