Dansyl—Naphthalimide Dyads As Molecular Probes: Effect of Spacer Group on Metal Ion Binding Properties
作者:Balaraman H. Shankar、Danaboyina Ramaiah
DOI:10.1021/jp207895y
日期:2011.11.17
(PET) processes, both of which decrease with the increase in spacer length. Depending on the spacer group, these dyads interact selectively with divalent Cu2+ and Zn2+ ions, as compared to other mono- and divalent metal ions. Jobs plot analysis showed that these dyads form 2:3 complexes with Cu2+ ions, while 1:1 complexes were observed with Zn2+ ions. The association constants for the Zn2+ and Cu2+ complexes
Design, synthesis, and identification of a novel napthalamide-isoselenocyanate compound NISC-6 as a dual Topoisomerase-IIα and Akt pathway inhibitor, and evaluation of its anti-melanoma activity
作者:Deepkamal N. Karelia、Ugir Hossain Sk、Parvesh Singh、A.S. Prakasha Gowda、Manoj K. Pandey、Srinivasa R. Ramisetti、Shantu Amin、Arun K. Sharma
DOI:10.1016/j.ejmech.2017.04.052
日期:2017.7
Synthesis and anti-melanoma activity of novel naphthalimide isoselenocyanate (NISC) and naphthalimide selenourea (NSU) analogs are described. The novel agents were screened for growth inhibition of different human melanoma cell lines including those having BRAFV600E mutation (UACC903, 1205Lu, and A375M) and BRAFWT (CHL-1). In general, the NISC analogs (4a-d) were more effective in inhibiting the cell
dyads 3 connected by different length polymethylene chains were synthesized and studied as fluorescent supramolecular receptors in metal ion binding. The photophysical properties were evaluated and compared with separated chromophores. The electronic absorption spectra of dyads 3 showed no interaction between chromophores in the ground state. The fluorescence quantum yields were lower in dyads 3 in comparison
the photophysical properties of the light-emitting subunit. The coordination of genuine transition metal ions (FeII, CoII, NiII, CuII) causes the emission intensity to decrease in all the investigated systems, while ZnII or CdII induce a fluorescence enhancement (system 2) or the formation of a new band in the emission spectra (systems 3–5) which can be ascribed to an intramolecular excimeric species