97727-87-2Relevant articles and documents
Aldoxime- and hydroxy-functionalized chalcones as highly potent and selective monoamine oxidase-B inhibitors
Oh, Jong Min,Rangarajan,Chaudhary, Reeta,Gambacorta, Nicola,Nicolotti, Orazio,Kumar, Sunil,Mathew, Bijo,Kim, Hoon
, (2021/11/16)
A panel of 30 chalcone derivatives, including 19 aldoxime-chalcone ethers (ACE), and 11 hydroxyl?chalcones (HC), previously synthesized using a Pd-catalyzed C–O cross-coupling method were evaluated for their inhibitory activities against monoamine oxidases (MAOs), cholinesterases (ChEs), and β-secretase (BACE-1). HC6 was the most potent inhibitor of MAO-B with an IC50 value of 0.0046 μM and a selectivity index (SI) of 1,113. HC3 also potently inhibited MAO-B (IC50 = 0.0067 μM) and had the highest SI (1,455). ACE7 and ACE15 were also potent MAO-B inhibitors (IC50 = 0.012 and 0.018 μM, respectively), with SIs of 260 and 1,161, respectively. HC3 and HC6 were reversible competitive inhibitors of MAO-B, with Ki values of 0.0036 and 0.0013 μM, respectively. A structure–activity relationship revealed that methyl and fluorine substituents contributed to increasing both inhibition and selectivity. ACE7 was the most effective inhibitor of MAO-A (IC50 = 1.49 μM), followed by ACE3 (IC50 = 3.75 μM). No compounds effectively inhibited AChE, BChE, or BACE-1. A docking simulation showed that the ligand efficiency and docking scores of HC3 and HC6 toward MAO-B were consistent with the experimental IC50 values. These results suggest that HC3 and HC6 can be considered promising candidates for the treatment of neurological disorders.
Chalcone derivative containing thioether triazole, preparation method and application
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Paragraph 0027; 0033; 0034, (2019/06/12)
The invention discloses a chalcone derivative containing thioether triazole, a preparation method and application. The structure formula of the derivative is shown as following B (the formula is shownin the description), where X is 2-O or 4-O, R is phenyl and comprises one or more substituted phenyl and heterocyclyl. The substituted phenyl is halogen at positions 2 to 6, C1-6 alkyl at positions 2to 6, C1-6 alkoxy at positions 2 to 6, nitryl at positions 2 to 6 or amino at positions 2 to 6. The heterocyclyl is furyl, thienyl, pyridyl, 3-methyl-2-pyridine, 5-methyl-2-pyridine, thiazolyl, and 4-methylthiazol-5-yl. The chalcone derivative provided by the invention has relatively good control effect on ralstonia solanacearum and bacteria of rice leaf blight.
Biological activity evaluation and action mechanism of chalcone derivatives containing thiophene sulfonate
Guo, Tao,Xia, Rongjiao,Chen, Mei,He, Jun,Su, Shijun,Liu, Liwei,Li, Xiangyang,Xue, Wei
, p. 24942 - 24950 (2019/08/21)
A series of novel chalcone derivatives containing a thiophene sulfonate group were designed and synthesized. The structures of all title compounds were determined by 1H-NMR, 13C-NMR and HRMS. Antibacterial bioassays indicated that, compound 2l demonstrated excellent antibacterial activities against Xanthomonas axonopodis pv. citri (Xac), with an EC50 value of 11.4 μg mL-1, which is significantly superior to those of bismerthiazol (BT) (51.6 μg mL-1) and thiodiazole-copper (TC) (94.7 μg mL-1). Meanwhile, the mechanism of action of compound 2l was confirmed by using scanning electron microscopy (SEM). In addition, compound 2e showed remarkable inactivation activity against Tobacco mosaic virus (TMV), with an EC50 value of 44.3 μg mL-1, which was superior to that of ningnanmycin (120.6 μg mL-1). Microscale thermophoresis (MST) also showed that the binding of compounds 2e and 2h to Tobacco mosaic virus coat protein (TMV-CP) yielded Kd values of 0.270 and 0.301 μmol L-1, which are better than that of ningnanmycin (0.596 μmol L-1). At the same time, molecular docking studies for 2e and 2h with TMV-CP (PDB code: 1EI7) showed that the compound was embedded well in the pocket between the two subunits of TMV-CP in each case. These results suggested that chalcone derivatives containing a thiophene sulfonate group may be considered as activators in the design of antibacterial and antiviral agents.
