Conjugateaddition reaction of various nucleophiles across the vinyl group of 2-chloro-4-vinylpyrimidine, 2-chloro-4-(1-phenylvinyl)pyrimidine and 2-chloro-4-vinyl-quinazoline provides the corresponding 2-chloro-4-(2-substituted ethyl)pyrimidines and 2-chloro-4-(2-substituted ethyl)quinazolines. Treatment of these products, without isolation, with N-methylpiperazine results in nucleophilic displacement
Improved Synthesis of 4-(2-Substituted ethyl)-2-(4-Methylpiperazino)Quinazolines
作者:Elizabeth Raux,、Lucjan Strekowski,
DOI:10.1515/hc.2010.16.2-3.85
日期:2010.6
title compounds is reported. Quinazoline derivatives show a wide variety of biological activities.' In particular, 2-amino substituted quinazolines exhibit activity as anti-inflammatory agents through the interaction with the histamine H4 receptor, function as CCR4 antagonists, and are selective ligands for the 5-HT2A receptor.' An improved procedure for the preparation of 4-(2-substituted ethyl)-2-(4
The present invention is directed to a compound of Formula I or a single isomer thereof; where the compound is optionally as a pharmaceutically acceptable salt, hydrate, solvate or combination thereof, in addition to methods of preparing a Compound of Formula I, and methods of using a Compound of Formula I to treat cancer.
本发明涉及一种式 I 的化合物或其单一异构体;其中该化合物可选为药学上可接受的盐、水合物、溶液或其组合,此外还涉及制备式 I 化合物的方法,以及使用式 I 化合物治疗癌症的方法。
Synthesis and Structure-Activity Relationship Analysis of 5-HT7 Receptor Antagonists: Piperazin-1-yl Substituted Unfused Heterobiaryls
A series of piperazin-1-yl substituted unfused heterobiaryls was synthesized as ligands of the 5-HT7 receptors. The goal of this project was to elucidate the structural features that affect the 5-HT7 binding affinity of this class of compounds represented by the model ligand 4-(3-furyl)-2-(4-methylpiperazin-1-yl)pyrimidine (2). The SAR studies included systematical structural changes of the pyrimidine
The addition reaction of lithiumreagents to the 4 position of 2‐chloropyrimidine or 2‐chloroquinazoline followed by oxidation of the resultant dihydro intermediate product is a powerful tool for the synthesis of 4‐substituted 2‐chloropyrimidines or 2‐chloroquinazolines. 4‐Vinyl derivatives undergo a conjugate nucleophilic addition across the vinyl group. A nucleophilic displacement of chloride in