Chiral discrimination in binding of enantiomers of 2-(aminoalkoxy)-substituted 4-(2-thienyl)pyrimidines and 4,6-bis(2-thienyl)pyrimidines with duplex DNA
摘要:
Thienylpyrimidines substituted at position 2 of the pyrimidine with a chiral aminoalkoxy group were synthesized. Upon interaction with duplex DNA, the unfused heteroaromatic system of these compounds intercalates with DNA base pairs and the protonated side chain is located in the major groove. The S-enantiomers bind more strongly than their R-counterparts with enantiomeric discrimination, as measured by a ratio of binding constants K-S/K-R, ranging from 1.2 to 2.4. (c) 2005 Elsevier Ltd. All rights reserved.
Structure-Activity Relationship Studies of CNS Agents, Part 25: 4,6-Di(heteroaryl)-2-(N-methylpiperazino)pyrimidines as New, Potent 5-HT2A Receptor Ligands: A Verification of the Topographic Model
作者:Maria J. Mokrosz、Lucjan Strekowski、Wei Xing Kozak、Beata Duszyńska、Andrzej J. Bojarski、Aleksandra Kłodzinska、Agnieszka Czarny、Marek T. Cegła、Anna Dereń-Wesołek、Ewa Chojnacka-Wójcik、Stefan Dove、Jerzy L. Mokrosz
DOI:10.1002/ardp.19953280906
日期:——
A series of new 4,6‐di(heteroaryl)pyrimidines containing an N‐methylpiperazino group (6–13) or an ethylenediamine chain (15–20) in position 2 were synthesized and their 5‐HT1A and 5‐HT2A receptor affinities were determined. It was shown that the substituent effects on the 5‐HT2A affinity are additive and could be described quantitatively. In a behavioral model it was also demonstrated that 6–11 are