42224-53-3Relevant articles and documents
Design, Synthesis, Drug-Likeness Studies and Bio-Evaluation of Some New Chalconeimines
Rudrapal, Mithun,Sowmya, Mullapudi P. K.
, p. 814 - 821 (2019)
Newly designed chalconeimines were synthesized, characterized and evaluated for their in vitro antioxidant and antibacterial effectiveness. Results of antioxidant activity assay reveal that all the tested compounds possess good to moderate antioxidant activity which is lower in comparison to that of a standard drug (gallic acid). On the other hand, all the synthesized compounds were found to exhibit a considerably wider spectrum of antibacterial activity, but it was also narrower in comparison to that of a standard drug (ciprofloxacin). Elucidation of structure—activity relationships revealed that electron donating groups (-OH, -OCH3) contribute more to antioxidant potency, whereas electron withdrawing groups (-Cl) impart better antibacterial effectiveness. Moreover, results of drug-likeness studies indicate that a reasonable correlation exists between the drug-like properties and antioxidant activity of the synthesized chalconeimines.
Synthesis of sulfonamides bearing 1,3,5-triarylpyrazoline and 4-thiazolidinone moieties as novel antimicrobial agents
Thach, Thi-Dan,Le, Thi Tuong-Vi,Nguyen, Huu Thien-An,Dang, Chi-Hien,Dang, Van-Su,Nguyen, Thanh-Danh
, p. 158 - 162 (2020/05/08)
Two series of sulfonamides were synthesized from 4-hydrazinylben-zenesulfonamide as the key starting material. 1,3,5-Triarylpyrazoline sulfonamides (2a-i) were obtained by cyclocondensation of various chalcones in 53-64 % yields, while 4-thiazolidinone derivatives (4a-e) were synthesized by cyclocondensation between mercaptoacetic acid and different phenylhydrazones in 43-62 % yields. The synthesized compounds were characterized based on FTIR, 1H-NMR, 13C-NMR and HRMS data. The sulfonamides were evaluated for their in vitro antimicrobial activities against four bacterial strains (E. coli, P. aeruginosa, B. subtillis and S aureus), two filamentous fungal strains (A. Niger and F. oxysporum) and two yeast strains (C. albicans and S. cerevisiae). Seven pyrazolines, 2a-c and 2e-h, exhibited significant inhibition of different microbial strains. Among them, compound 2b displayed good antifungal activity against A. Niger (MIC value at 12.5 μg mL-1) over the reference drug.
One-Pot Allylation-Intramolecular Vinylogous Michael Addition-Isomerization Cascade of o-Hydroxycinnamates and Congeners: Synthesis of Substituted Benzofuran Derivatives
Harish, Battu,Subbireddy, Manyam,Obulesu, Owk,Suresh, Surisetti
supporting information, (2019/03/19)
A unique intramolecular vinylogous Michael addition leading to the synthesis of heterocycles has been disclosed. Base-promoted one-pot sequential O-allylation of o-hydroxy-cinnamates or -cinnamonitrile or -chalcones with γ-bromocrotonates followed by an intramolecular conjugate addition of vinylogous Michael donors resulted in the formation of highly substituted benzofuran derivatives in good to excellent yields. The intramolecular event followed by two [1,3]-H shifts leading to aromatization appears to be the key to the success of this unprecedented transformation.
