Viologen linked acridine based molecule and process for the preparation thereof
申请人:COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH of India
公开号:US20030045538A1
公开(公告)日:2003-03-06
The present invention provides a series of novel bifunctional molecules based on viologen linked acridine, bisacridine and bisacridinium salts of the general formula 1 (1a, 1b, 1c and 1d) and or pharmaceutically acceptable derivatives thereof, which can be used as phototherapeutic and catalytic photoactivated DNA cleaving agents. These molecules are very stable and exhibit high solubility in buffer at physiological conditions. They undergo strong binding with DNA through intercalation and groove binding interactions and show remarkably high affinity for poly(dA).poly(dT) sequences. Upon photoactivation, they cleave DNA catalytically and selectively at guanine (G) sites in duplex DNA exclusively through cosensitization mechanism with a preference for 5′-G over 3′-G. They induce unusally high specificity of cleavage at G site of the AG two base bulge sequences. Accordingly, the viologen linked acridine based molecules described herein are extremely useful as probes for DNA structures and catalytic photoactivated DNA cleaving agents in biological applications.
VIOLOGEN LINKED ACRIDINE BASED MOLECULE AND PROCESS FOR THE PREPARATION THEREOF
申请人:COUNCIL OF SCIENTIFIC AND
INDUSTRIAL RESEARCH
公开号:EP1373250B1
公开(公告)日:2006-08-30
US6630481B2
申请人:——
公开号:US6630481B2
公开(公告)日:2003-10-07
[EN] VIOLOGEN LINKED ACRIDINE BASED MOLECULE AND PROCESS FOR THE PREPARATION THEREOF<br/>[FR] MOLECULE A BASE D'ACRIDINES LIEES PAR VIOLOGENE ET LEUR PROCEDE DE PREPARATION
申请人:COUNCIL SCIENT IND RES
公开号:WO2002079191A1
公开(公告)日:2002-10-10
Bifunctional molecules based on viologen linked acridines or derivatives thereof, which can be used as phototherapeutical and catalytic photoactivated DNA clevaing agents, a process for the process for the preparation thereof and pharmaceutically acceptable derivatives thereof.
Control of Electron-Transfer and DNA Binding Properties by the Tolyl Spacer Group in Viologen Linked Acridines
作者:Joshy Joseph、Nadukkudy V. Eldho、Danaboyina Ramaiah
DOI:10.1021/jp027248q
日期:2003.5.1
2b, respectively, suggesting thereby that the viologen moiety quenches the fluorescence of the acridine chromophore efficiently when compared to the case of the pyridinium moiety. From the intermolecular electron-transfer studies, it was observed that the singlet and triplet excited states of the acridine chromophore are capable of donating an electron to the viologen moiety. DNA binding studies indicated