52130-32-2Relevant academic research and scientific papers
Synthesis and Biological Evaluation of Dantrolene-Like Hydrazide and Hydrazone Analogues as Multitarget Agents for Neurodegenerative Diseases
Bolognino, Isabella,Giangregorio, Nicola,Tonazzi, Annamaria,Martínez, Antón L.,Altomare, Cosimo D.,Loza, María I.,Sablone, Sara,Cellamare, Saverio,Catto, Marco
, p. 2807 - 2816 (2021/06/27)
Dantrolene, a drug used for the management of malignant hyperthermia, had been recently evaluated for prospective repurposing as multitarget agent for neurodegenerative syndromes, including Alzheimer's disease (AD). Herein, twenty-one dantrolene-like hydrazide and hydrazone analogues were synthesized with the aim of exploring structure-activity relationships (SARs) for the inhibition of human monoamine oxidases (MAOs) and acetylcholinesterase (AChE), two well-established target enzymes for anti-AD drugs. With few exceptions, the newly synthesized compounds exhibited selectivity toward MAO B over either MAO A or AChE, with the secondary aldimine 9 and phenylhydrazone 20 attaining IC50 values of 0.68 and 0.81 μM, respectively. While no general SAR trend was observed with lipophilicity descriptors, a molecular simplification strategy allowed the main pharmacophore features to be identified, which are responsible for the inhibitory activity toward MAO B. Finally, further in vitro investigations revealed cell protection from oxidative insult and activation of carnitine/acylcarnitine carrier as concomitant biological activities responsible for neuroprotection by hits 9 and 20 and other promising compounds in the examined series.
Structure-based discovery of new selective small-molecule sirtuin 5 inhibitors
Liu, Sha,Ji, Sen,Yu, Zhu-Jun,Wang, Hua-Li,Cheng, Xu,Li, Wei-Jian,Jing, Li,Yu, Yamei,Chen, Qiang,Yang, Ling-Ling,Li, Guo-Bo,Wu, Yong
, p. 257 - 268 (2017/12/29)
Human sirtuin 5 (SIRT5) is a protein deacylase regulating metabolic pathways and stress responses and is implicated in metabolism-related diseases. Small-molecule inhibitors for SIRT5 are sought as chemical tools and potential therapeutics. Herein, we proposed a customized virtual screening approach targeting catalytically important and unique residues Tyr102 and Arg105 of SIRT5. Of the 20 tested virtual screening hits, six compounds displayed marked inhibitory activities against SIRT5. For the hit compound 19, a series of newly synthesized (E)-2-cyano-N-phenyl-3-(5-phenylfuran-2-yl)acrylamide derivatives/analogues were carried out structure–activity relationship analyses, resulting in new more potent inhibitors, among which 37 displayed the most potent inhibition to SIRT5 with an IC50 value of 5.59?±?0.75?μM. The biochemical studies revealed that 37 likely acts via competitive inhibition with the succinyl-lysine substrate, rather than the NAD+ cofactor, and it manifested substantial selectivity for SIRT5 over SIRT2 and SIRT6. This study will aid further efforts to develop new selective SIRT5 inhibitors as tools and therapeutics.
Antimalarial agents against both sexual and asexual parasites stages: structure-activity relationships and biological studies of the Malaria Box compound 1-[5-(4-bromo-2-chlorophenyl)furan-2-yl]-N-[(piperidin-4-yl)methyl]methanamine (MMV019918) and analogues
Vallone, Alessandra,D'Alessandro, Sarah,Brogi, Simone,Brindisi, Margherita,Chemi, Giulia,Alfano, Gloria,Lamponi, Stefania,Lee, Soon Goo,Jez, Joseph M.,Koolen, Karin J.M.,Dechering, Koen J.,Saponara, Simona,Fusi, Fabio,Gorelli, Beatrice,Taramelli, Donatella,Parapini, Silvia,Caldelari, Reto,Campiani, Giuseppe,Gemma, Sandra,Butini, Stefania
, p. 698 - 718 (2018/03/24)
Therapies addressing multiple stages of Plasmodium falciparum life cycle are highly desirable for implementing malaria elimination strategies. MMV019918 (1, 1-[5-(4-bromo-2-chlorophenyl)furan-2-yl]-N-[(piperidin-4-yl)methyl]methanamine) was selected from the MMV Malaria Box for its dual activity against both asexual stages and gametocytes. In-depth structure-activity relationship studies and cytotoxicity evaluation led to the selection of 25 for further biological investigation. The potential transmission blocking activity of 25 versus P. falciparum was confirmed through the standard membrane-feeding assay. Both 1 and 25 significantly prolonged atrioventricular conduction time in Langendorff-isolated rat hearts, and showed inhibitory activity of Ba2+ current through Cav1.2 channels. An in silico target-fishing study suggested the enzyme phosphoethanolamine methyltransferase (PfPMT) as a potential target. However, compound activity against PfPMT did not track with the antiplasmodial activity, suggesting the latter activity relies on a different molecular target. Nevertheless, 25 showed interesting activity against PfPMT, which could be an important starting point for the identification of more potent inhibitors active against both sexual and asexual stages of the parasite.
Direct C–H Arylation of Heteroarenes with Aryl Chlorides by Using an Abnormal N-Heterocyclic-Carbene–Palladium Catalyst
Ahmed, Jasimuddin,Sau, Samaresh Chandra,Sreejyothi,Hota, Pradip Kumar,Vardhanapu, Pavan K.,Vijaykumar, Gonela,Mandal, Swadhin K.
supporting information, p. 1004 - 1011 (2017/02/15)
Herein, we report a versatile catalytic system for the direct C–H arylation of heteroarenes with activated aryl chloride substrates. The catalyst works successfully for a variety of heteroarenes and aryl chloride coupling partners under very low catalyst-loading conditions. We have successfully performed the direct C–H arylations of 1-methylpyrrole, 1-methylindole, furan, thiophene, furfural, and N-benzyl-1,2,3-triazole with aryl chloride partners in good yields without the use of any additives. Furthermore, we used this catalytic process to develop a one-pot synthetic protocol for the muscle relaxant dantrolene on a gram scale. Additionally, the present catalytic system can be used to perform consecutive arylations in one pot.
A convenient synthesis of 5-aryl- and 5-heteroaryl-2-furaldehydes by the cross-coupling reaction of organozincs
Kim, Seung-Hoi,Rieke, Reuben D.
experimental part, p. 2657 - 2659 (2010/06/19)
An efficient synthetic route for the preparation of 5-heteroaryl- and 5-aryl-2-furaldehydes has been developed. It has been accomplished by the palladium(0)-catalyzed cross-coupling reaction of heteroarylzinc and arylzinc reagents with 5-bromo-2-furaldehyde under very mild conditions.
Low catalyst loading ligand-free palladium-catalyzed direct arylation of furans: An economically and environmentally attractive access to 5-arylfurans
Dong, Jia Jia,Roger, Julien,Pogan, Franc,Doucet, Henri
experimental part, p. 1832 - 1846 (2011/03/18)
The direct 5-arylation of furans at very low catalyst loading using Pd(OAc)2 as catalyst without added ligand proceed in high yields. Turnover numbers up to 10000 have been obtained for the coupling of several activated aryl bromides. A wide ra
Reactions of 1,5-π-cyclization of gem-difluoro-substituted azomethine ylides involving an aromatic ring
Voznyi,Novikov,Khlebnikov,Kostikov
, p. 689 - 695 (2007/10/03)
Reactions of N-(5-R-furan-2-ylmethylidene)anilines with difluorocarbene proceeds through intermediate azomethine ylides suffering 1,5-π-cyclization to yield 6,6-difluorocyclopropa[b]furo[2,3-c]pyrrole and/or 4,4,6,6- tetrafluorocyclopropa[b]furo[2,3-c]pyr
USE OF THIAZOLIDINONE DERIVATIVES AS ANTIANGIOGENIC AGENTS
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Page/Page column 14, (2008/06/13)
The invention relates to the use of compounds of general formula (I), in which R1, R2 and X are as defined in the description for the preparation of pharmaceutical compositions for the treatment of pathologies in which inhibition of the interaction between HIF-1α and p300 is beneficial, in particular as antiangiogenic medicaments for the therapy of solid tumors.
Phospholipase D inhibitors and uses thereof
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, (2008/06/13)
The invention is directed to thiazolidinones and the use thereof to inhibit phospholipase D (PLD) activity. The invention further relates to methods of treating cancer and inflammatory diseases using thiazolidinones.
Dantrolene analogues revisited: General synthesis and specific functions capable of discriminating two kinds of Ca2+ release from sarcoplasmic reticulum of mouse skeletal muscle
Hosoya, Takamitsu,Aoyama, Hiroshi,Ikemoto, Takaaki,Kihara, Yasutaka,Hiramatsu, Toshiyuki,Endo, Makoto,Suzuki, Masaaki
, p. 663 - 673 (2007/10/03)
The general synthesis of dantrolene analogues with various substituents on its phenyl ring has been developed via palladium-catalyzed cross-coupling reactions, the Stille or Suzuki reaction, as the key step. The effects of synthesized analogues have been evaluated by two kinds of Ca2+ release modes from sarcoplasmic reticulum (SR) of mouse skeletal muscle fibers based on: (1) the measurement of twitch contraction caused by the physiological Ca2+ release (PCR) of intact skeletal muscle and (2) the rate of Ca2+-induced Ca2+ release (CICR) in saponin-treated skinned muscle fibers. Although dantrolene, a lead compound, inhibits both twitch contraction and CICR, some structurally modified analogues exhibit one or the other of these effects. The methoxy congener, GIF-0185, potently inhibits the twitch contraction without affecting the CICR, while GIF-0166 and GIF-0248, the ortho-nitro regioisomer and ortho, ortho-dinitro substituted analogues, respectively, doubly potentiate the CICR exclusively.
