Exploring 3-Benzyloxyflavones as new lead cholinesterase inhibitors: synthesis, structure–activity relationship and molecular modelling simulations
作者:Ehsan Ullah Mughal、Amina Sadiq、Momna Ayub、Nafeesa Naeem、Asif Javid、Sajjad Hussain Sumrra、Muhammad Naveed Zafar、Bilal Ahmad Khan、Fouzia Perveen Malik、Ishtiaq Ahmed
DOI:10.1080/07391102.2020.1803136
日期:2021.11.2
molecular docking studies were carried out. HIGHLIGHTS 3-benzyloxyflavone analogues were designed, synthesized and characterized. The target molecules (1–10) were evaluated for their inhibitory potential against AChE and BChE inhibitory activities. Limited structure-activity relationship was developed based on the different substituent patterns on arylpart. Molecular docking studies were conducted to
Fluorescent flavonoids for endoplasmic reticulum cell imaging
作者:Lucas McDonald、Bin Liu、Alexandra Taraboletti、Kyle Whiddon、Leah P. Shriver、Michael Konopka、Qin Liu、Yi Pang
DOI:10.1039/c6tb02456d
日期:——
characterized. The flavonoids were nearly non-fluorescent in aqueous environment, but exhibited two emission peaks (one λem at 495–536 nm and the other at 570–587 nm) in organicsolvents, which were assigned to the excited normal (N*) and tautomer (T*) emission. When the dyes were examined on oligodendrocyte cells, they were found to selectively accumulate in the endoplasmic reticulum (ER), a eukaryotic
chromophores demonstrating excited-state intramolecular proton transfer (ESIPT). Coupling between the 3-hydroxyflavone branches connected by an electron-donating triphenylamine core is manifested in the red-shifted and asymmetric absorption band of 2, whereas the absorption of 3 is governed by the divided donor strength. Their excited-state charge-transfer (ESCT)-coupled ESIPT dynamics is investigated via
In a quest for the still elusive dual-state emission (DSE), i.e., intenseemissions both in solution and in the solidstate, the luminescence properties of novel boron difluoride complexes with flavonolates bearing substituent(s) at the B ring (R: 4-Ph (2b); 4-OPh (2c); 4-NPh2 (2d); 2,6-Me2 (2e)) have been investigated. The emission intensity and maximum wavelength are strongly influenced by the electronic