Synthesis of 4-substituted 2-(4-methylpiperazino)pyrimidines and quinazoline analogs as serotonin 5-HT<sub>2A</sub>receptor ligands
作者:Jaroslaw Saczewski、Aldona Paluchowska、Jeffrey Klenc、Elizabeth Raux、Samuel Barnes、Shannon Sullivan、Beata Duszynska、Andrzej J. Bojarski、Lucjan Strekowski
DOI:10.1002/jhet.236
日期:2009.11
The addition reaction of lithium reagents 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
将锂试剂加成至2-氯嘧啶或2-氯喹唑啉的4位反应,然后氧化所得的二氢中间产物,是合成4取代2-氯嘧啶或2-氯喹唑啉的有力工具。4-乙烯基衍生物在整个乙烯基上进行共轭亲核加成。通过用4-甲基哌嗪处理,4-取代的2-氯嘧啶或2-氯喹唑啉中氯的亲核取代提供了作为5-羟色胺5-HT 2A受体拮抗剂的化合物。J.杂环化学,(2009)。