已经开发出铜催化的用于将乙苯脱氢成苯乙烯衍生物的反应方案。该反应过程在温和的反应条件下进行得很好,为生物学和药学上重要的分子(如乙烯基砜)的快速组装提供了实用而有效的策略。在存在N-磺酰基苯并[ d ]咪唑的情况下,通过连续的β-消除作用将简单的烷基芳烃官能化,具有广泛的底物范围和良好的官能团耐受性。
[EN] BENZO RING DERIVATIVE WITH Β2 RECEPTOR AGONIST AND M3 RECEPTOR ANTAGONIST ACTIVITIES AND USE THEREOF IN MEDICINE<br/>[FR] DÉRIVÉ DE CYCLE BENZÈNE À ACTIVITÉS AGONISTIQUE DU RÉCEPTEUR Β2 ET ANTAGONISTIQUE DU RÉCEPTEUR M3, ET UTILISATION MÉDICALE DE CELUI-CI<br/>[ZH] 具有β2受体激动及M3受体拮抗活性的苯并环衍生物及其在医药上的用途
A series of 6,11-ethanobenzo[b]quinolizinium derivatives was synthesized through the Diels-Alder reaction between azoniaanthracne and the corresponding 1,1-disubstituted olefin. After a systematic investigation for achieving rapid synthesis, it was found that the reaction is accelerated in polar media such as H2O and trifluoroethanol. In particular, excellent acceleration was effected by microwave irradiation. The new fluorine-substituted ligands thus obtained exhibited potential affinity toward NMDA receptors. (C) 1998 Elsevier Science Ltd. All rights reserved.
4,5,9,10-Tetrahydro-1,4-ethanobenz[b]quinolizine as a prodrug for its quinolizinium cation as a ligand to the open state of the TCP-binding site of NMDA receptors
A new derivative of 4,5,9,10-tetrahydro-1,4-ethanobenz[b]quinolizine (2) has been designed as a prodrug for its quinolizinium cation (1) that is a potent antagonist of the TCP-binding site of NMDA receptors at the open state. The C-11-labeled 2 showed high accumulation of radioactivity in the brain in an in vivo biodistribution study. The speculation of 2 as a prodrug of 1 has been proven by the fact that 1 was observed in a high ratio to 2 in an analysis by RP-HPLC of the brain homogenates. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis and evaluation of18F- and11C-labelled 9,10-ethanobenzo[b]quinolizinium derivatives for imaging of the NMDA receptor at the TCP-binding site
Derivatives of 9,10-ethanobenzo[b]quinolizinium are potent antagonists for the TCP-site of the NMDA receptor. Two fluoroethyl-substituted analogues were labelled with fluorine-18 by displacement of the tosylate with [F-18]fluoride, followed by a Diels-Alder reaction. A methoxy-substituted analogue labelled with carbon-ii was obtained by O-methylation of the corresponding hydroxy precursor with [C-11]iodomethane. In biodistribution studies in mice with these three radioligands, it was found that they have little ability to penetrate the blood-brain barrier.