71125-95-6Relevant academic research and scientific papers
Insights into the discovery of novel neuroprotective agents: A comparative study between sulfanylcinnamic acid derivatives and related phenolic analogues
Chavarria, Daniel,Fernandes, Carlos,Aguiar, Brandon,Silva, Tiago,Garrido, Jorge,Remi?o, Fernando,Oliveira, Paulo J.,Uriarte, Eugenio,Borges, Fernanda
, (2019)
Exogenous antioxidants may be beneficial therapeutic tools to tackle the oxidative damage in neurodegenerative diseases by regulation of the redox state that is critical for cell viability and organ function. Inspired by natural plant polyphenols, a series of cinnamic acid-based thiophenolic and phenolic compounds were synthesized and their antioxidant and neuroprotective properties were studied. In general, our results showed that the replacement of the hydroxyl group (OH) by a sulfhydryl group (SH) increased the radical scavenging activity and enhanced the reaction rate with 1,1-diphenyl-2-picrylhydrazyl radical (DPPH?) and galvinoxyl radical (GO?). These results correlated well with the lower oxidation potential (Ep) values of thiophenols. However, a lower peroxyl radical (ROO?) scavenging activity was observed for thiophenols in oxygen radical absorbance capacity (ORAC-FL) assay. Furthermore, the introduction of 5-methoxy and 5-phenyl groups in the aromatic ring of 4-thioferulic acid (TFA) 2 and ferulic acid (FA) 1 did not significantly improve their antioxidant activity, despite the slight decrease of Ep observed for compounds 5, 6, and 9. Concerning cinnamic acid amides, the antioxidant profile was similar to the parent compounds. None of the compounds under study presented significant cytotoxic effects in human differentiated neuroblastoma cells. Thiophenolic amide 3 stands out as the most promising thiophenol-based antioxidant, showing cellular neuroprotective effects against oxidative stress inducers (hydrogen peroxide and iron).
Bioisosteric OH- To SH-replacement changes the antioxidant profile of ferulic acid
Chavarria, Daniel,Fernandes, Carlos,Silva, Tiago,Garrido, Jorge,Remi?o, Fernando,Oliveira, Paulo J.,Borges, Fernanda
, p. 9646 - 9654 (2019)
We report the synthesis of 4-thioferulic acid (TFA), a new ferulic acid (FA) derivative, and highlight the differences between the two compounds concerning rate and mechanism of radical scavenging activity, redox potential, acidity of the phenol/thiopheno
Synthesis of Thio-lignan Analogues, Bioequivalent Salvinal without Unfavored Aldehyde
Saito, Yohei,Kobayashi, Yukiko,Yoshida, Nanami,Goto, Masuo,Nakagawa-Goto, Kyoko
, p. 7092 - 7106 (2021/05/29)
The oxygen in the benzofuran (BF) of three antiproliferative natural neolignans, salvinal (1), obovaten (2), and 2-[7-methoxy-2-(4-methoxyphenyl)-3-methylbenzofuran-5-yl]ethanol (3), was replaced with sulfur to form the new biological scaffold benzothioph
Design, synthesis, and biological evaluation of novel combretastatin A-4 thio derivatives as microtubule targeting agents
Stefański, Tomasz,Mikstacka, Renata,Kurczab, Rafa?,Dutkiewicz, Zbigniew,Kucińska, Ma?gorzata,Murias, Marek,Zielińska-Przyjemska, Ma?gorzata,Cichocki, Micha?,Teubert, Anna,Kaczmarek, Mariusz,Hogendorf, Adam,Sobiak, Stanis?aw
supporting information, p. 797 - 816 (2018/01/03)
A series of novel combretastatin A-4 (CA-4) thio derivatives containing different molecular cores, namely α-phenylcinnamic acids (core 1), (Z)-stilbenes (core 2), 4,5-disubstituted oxazoles (core 3), and 4,5-disubstituted N-methylimidazoles (core 4), as cis-restricted analogues were designed and synthesized. They were selected with the use of a parallel virtual screening protocol including the generation of a virtual combinatorial library based on an elaborated synthesis protocol of CA-4 analogues. The selected compounds were evaluated for antiproliferative activity against a panel of six human cancer cell lines (A431, HeLa, MCF7, MDA-MB-231, A549 and SKOV) and two human non-cancer cell lines (HaCaT and CCD39Lu). Moreover, the effect of the test compounds on the inhibition of tubulin polymerization in vitro was estimated. In the series studied here, oxazole-bridged analogues exhibited the most potent antiproliferative activity. Compounds 23a, 23e, and 23i efficiently inhibited tubulin polymerization with IC50 values of 0.86, 1.05, and 0.85 μM, respectively. Thio derivative 23i, when compared to its oxygen analogue 23j, showed a 5-fold higher inhibitory impact on tubulin polymerization. Compounds 23e and 23i, which showed both best cytotoxic and antitubulin activity, were further studied in terms of their effect on cell cycle distribution and proapoptotic activity. Compound 23e induced a statistically significant block of the cell cycle at the G2/M phase in A431, HaCaT, HeLa, MCF-7, MDA-MB-231, and SKOV-3 cells to an extent comparable to that observed in CA-4. In HeLa and SKOV-3 cells incubated with 23i, a concentration-dependent block of the G2/M phase was observed. The proapoptotic effect of 23e and 23i in A431, HaCaT, MCF-7, MDA-MB-231, and SKOV-3 was demonstrated with ELISA assay and double staining with Annexin V-FITC/PI. The results indicated that compound 23e and 23i may serve as novel lead compounds in research on more effective anticancer agents.
Ambient-Temperature Newman-Kwart Rearrangement Mediated by Organic Photoredox Catalysis
Perkowski, Andrew J.,Cruz, Cole L.,Nicewicz, David A.
supporting information, p. 15684 - 15687 (2016/01/09)
The Newman-Kwart rearrangement is perhaps the quintessential method for the synthesis of thiophenols from the corresponding phenol. However, the high thermal conditions required for the rearrangement of the requisite O-aryl carbamothioates often leads to decomposition. Herein, we present a general strategy for catalysis of O-aryl carbamothioates to S-aryl carbamothioates using catalytic quantities of a commercially available organic single-electron photooxidant. Importantly, this reaction is facilitated at ambient temperatures.
ISOXAZOLE DERIVATIVE HAVING AGONISTIC ACTIVITY AGAINST PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR
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Page/Page column 107, (2010/11/23)
A compound of formula (I) : (wherein R1-R10 are each independently hydrogen, halogen, optionally substituted lower alkyl or the like, X1 is -O-, -S-, -NR11- (wherein R11 is hydrogen, lower alkyl or the like), -CR12R13CO-, -(CR12R13)mO-, -O(CR12R13)m- (wherein R12 and R13 are each independently hydrogen or lower alkyl and m is a integer between 1 and 3) or the like, X2 is a bond, -O-, -S-, -NR14- (wherein R14 is hydrogen, lower alkyl or the like, R14 and R6 can be taken together with the neighboring atom to form a ring) or -CR15R16-(wherein R15 and R16 are each independently hydrogen or lower alkyl, R15 and R6 or R10 can be taken together with the neighboring carbon atom to form a ring, R16 and R9 can be joined together to form a bond), X3 is COOR17, C( = NR17)NR18OR19 or the like), a pharmaceutically acceptable salt or a solvate thereof.
Stereochemical considerations and the antiinflammatory activity of 6-amino-6,7,8,9-tetrahydro-5H-benzocyclohepten-5-ols and related derivatives
Wong,Sasso,Jones,Kaminski
, p. 20 - 27 (2007/10/02)
The antiinflammatory activity of a series of 6-amino-6,7,8,9-tetrahydro-5H-benzocyclohepten-5-ols and related derivatives were examined using the reverse passive Arthus reaction (RPAR). The antiinflammatory activity of these compounds was markedly influenced by the stereochemistry of the amino alcohol moiety. The threo diastereomer exhibited activity in the RPAR, while the erythro diastereomer was devoid of any significant antiinflammatory activity. The antiinflammatory activity of the amino alcohols was also significantly influenced by the position and nature of the aromatic substituent. Latentiation of the amino alcohol function resulted in analogues exhibiting antiinflammatory activity equivalent to their amino alcohol precursors. Masking the amino alcohol function as a more stable derivative led to analogues exhibiting an antiinflammatory profile unique to their structural class.
