Arylethynylacridines: electrochemiluminescence and photophysical properties
作者:Arumugasamy Elangovan、Hsing-Hua Chiu、Shu-Wen Yang、Tong-Ing Ho
DOI:10.1039/b410829a
日期:——
Electrogenerated chemiluminescence (ECL) of six new ethyne-based acridine derivatives (1–6) has been studied. The new acridine derivatives were synthesized by cross-coupling of 9-chloroacridine and corresponding donor-substituted phenylethynes under modified Sonogashira conditions. The donor groups were varied in the order of increasing steric hindrance and donor strength at the donor site. The solution phase photophysical properties and ECL of these compounds were studied comparatively in acetonitrile solvent. The UV-Visible spectra of compounds 1–5 exhibit closely the same maxima. Density functional theory (DFT) has been invoked to analyze and understand the unexpected UV-Visible absorption behavior. Compounds with weak electron donors produce excimer ECL irrespective of steric hindrance at the donor site, while the compound with a stronger donor gives rise to ECL that is blue-shifted with respect to its photoluminescence spectrum. All except one of these compounds also exhibit solid state fluorescence which may be useful for solid state devices such as organic light emitting diodes (OLEDs) and as laser dyes. The observed properties are discussed with reference to the structure of the compounds synthesized.
[EN] METHODS AND COMPOSITIONS FOR TREATING VIRAL INFECTIONS IN HONEYBEES<br/>[FR] MÉTHODES ET COMPOSITIONS POUR LE TRAITEMENT D'INFECTIONS VIRALES CHEZ DES ABEILLES DOMESTIQUES
申请人:ISRAEL STATE
公开号:WO2016005979A1
公开(公告)日:2016-01-14
A method of increasing survival of viral infected honeybees, reducing viral load or protecting the honeybees from death, wherein said virus is a ssRNA virus, comprising administering to the honeybees an antiviral effective amount of an acridine derivative.
Design, synthesis and evaluation of novel 9-arylalkyl-10-methylacridinium derivatives as highly potent FtsZ-targeting antibacterial agents
作者:Di Song、Nan Zhang、Panpan Zhang、Na Zhang、Weijin Chen、Long Zhang、Ting Guo、Xiaotong Gu、Shutao Ma
DOI:10.1016/j.ejmech.2021.113480
日期:2021.10
incidence of antibiotic resistance, new antibacterial agents having novel mechanisms of action hence are in an urgent need to combat infectious diseases caused by multidrug-resistant (MDR) pathogens. Four novel series of substituted 9-arylalkyl-10-methylacridinium derivatives as FtsZinhibitors were designed, synthesized and evaluated for their antibacterialactivities against various Gram-positive and Gram-negative
Photocatalyzed Decarboxylative Thiolation of Carboxylic Acids Enabled by Fluorinated Disulfide
作者:Mikhail O. Zubkov、Mikhail D. Kosobokov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1021/acs.orglett.2c00549
日期:2022.4.1
of carboxylicacids using a disulfide reagent having tetrafluoropyridinyl groups is described. The light-mediated process is performed using an acridine-type photocatalyst. Primary, secondary, tertiary, and heteroatom-substituted carboxylicacids can be thiolated, and the method can be applied to the late-stage modification of a range of naturally occurring compounds and drugs. The fluorinated pyridine