Copper(II) chloride mediated synthesis and DNA photocleavage activity of 1-aryl/heteroaryl-4-substituted-1,2,4-triazolo[4,3-a]quinoxalines
摘要:
A new class of photonucleases, 1-aryl/heteroaryl-4-substituted-1,2,4-triazolo[4,3-a]quinoxalines (4) was synthesized in a facile and efficient manner via copper(II) chloride mediated oxidative intramolecular cyclization of 2-(arylidenehydrazino)-3-substituted-quinoxalines (3). DNA cleavage potency of compounds 4a-d (40 mu g each) was quantitatively evaluated on supercoiled plasmid Phi X174 under UV irradiation (312 nm, 15 W) without any additive. Compound 4c was found to be the most efficient DNA photocleaver which had converted supercoiled DNA (form I) into the relaxed DNA (form II) at 30 jig and the DNA photocleavage activity increases with increase in concentration of 4c. (C) 2011 Elsevier Masson SAS. All rights reserved.
[EN] (1,2,4)TRIAZOLO[4,3-A]QUINOXALINE DERIVATIVES AS INHIBITORS OF PHOSPHODIESTERASES<br/>[FR] DÉRIVÉS DE (1,2,4)TRIAZOLO[4,3-A]QUINOXALINE UTILISÉS COMME INHIBITEURS DES PHOSPHODIESTÉRASES
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2012104293A1
公开(公告)日:2012-08-09
The invention relates to (1,2,4)triazolo[4,3-a]quinoxaline derivatives of Formula (I) which are inhibitors of phosphodiesterase 2 and/or 10, useful in treating central nervous system diseases.
(1,2,4)TRIAZOLO[4,3-A]QUINOXALINE DERIVATIVES AS INHIBITORS OF PHOSPHODIESTERASES
申请人:Lankau Hans-Joachim
公开号:US20120302564A1
公开(公告)日:2012-11-29
The invention relates to (1,2,4)triazolo[4,3-a]quinoxaline derivatives which are inhibitors of phosphodiesterase 2 and/or 10, useful in treating central nervous system diseases.
A new class of photonucleases, 1-aryl/heteroaryl-4-substituted-1,2,4-triazolo[4,3-a]quinoxalines (4) was synthesized in a facile and efficient manner via copper(II) chloride mediated oxidative intramolecular cyclization of 2-(arylidenehydrazino)-3-substituted-quinoxalines (3). DNA cleavage potency of compounds 4a-d (40 mu g each) was quantitatively evaluated on supercoiled plasmid Phi X174 under UV irradiation (312 nm, 15 W) without any additive. Compound 4c was found to be the most efficient DNA photocleaver which had converted supercoiled DNA (form I) into the relaxed DNA (form II) at 30 jig and the DNA photocleavage activity increases with increase in concentration of 4c. (C) 2011 Elsevier Masson SAS. All rights reserved.