Spiperone: Influence of Spiro Ring Substituents on 5-HT2A Serotonin Receptor Binding
摘要:
Spiperone (1) is a widely used pharmacological tool that acts as a potent dopamine D-2, serotonin 5-HT1A, and serotonin 5-HT2A antagonist. Although spiperone also binds at 5-HT2C receptors, it is one of the very few agents that display some (ca. 1000-fold) binding selectivity for 5-HT2A versus 5-HT2C receptors and, hence, might serve as a useful template for the development of novel 5-HT2A antagonists if the impact of its various substituent groups on binding was known. In the present investigation we focused on the 1,3,8-triazaspiro[4.5]decanone portion of spiperone and found that replacement of the N-1-phenyl group with a methyl group only slightly decreased affinity for cloned rat 5-HT2A receptors. However, N-1-methyl derivatives displayed significantly reduced affinity for 5-HT1A, 5-HT2C, and dopamine D-2 receptors. Several representative examples were shown to behave as 5-HT2 antagonists. As such, N-1-alkyl analogues of spiperone may afford entry into a novel series of 5-HT2A-selective antagonists.
Spiperone: Influence of Spiro Ring Substituents on 5-HT2A Serotonin Receptor Binding
摘要:
Spiperone (1) is a widely used pharmacological tool that acts as a potent dopamine D-2, serotonin 5-HT1A, and serotonin 5-HT2A antagonist. Although spiperone also binds at 5-HT2C receptors, it is one of the very few agents that display some (ca. 1000-fold) binding selectivity for 5-HT2A versus 5-HT2C receptors and, hence, might serve as a useful template for the development of novel 5-HT2A antagonists if the impact of its various substituent groups on binding was known. In the present investigation we focused on the 1,3,8-triazaspiro[4.5]decanone portion of spiperone and found that replacement of the N-1-phenyl group with a methyl group only slightly decreased affinity for cloned rat 5-HT2A receptors. However, N-1-methyl derivatives displayed significantly reduced affinity for 5-HT1A, 5-HT2C, and dopamine D-2 receptors. Several representative examples were shown to behave as 5-HT2 antagonists. As such, N-1-alkyl analogues of spiperone may afford entry into a novel series of 5-HT2A-selective antagonists.
SUBSTITUIERTE 1,3,8-TRIAZA-SPIRO(4,5)-DECAN-4-ON-DERIVATE ALS VORSTUFEN ZUR HERSTELLUNG VON PHARMAZEUTIKA
申请人:CIS BIO INTERNATIONAL
公开号:EP0745082A1
公开(公告)日:1996-12-04
[DE] SUBSTITUIERTE 1,3,8-TRIAZA-SPIRO(4,5)-DECAN-4-ON-DERIVATE ALS VORSTUFEN ZUR HERSTELLUNG VON PHARMAZEUTIKA<br/>[EN] SUBSTITUTED 1,3,8-TRIAZA-SPIRO(4,5)-DECAN-4-ONE DERIVATIVES USEFUL AS PRELIMINARY STAGES IN THE PRODUCTION OF PHARMACEUTICALS<br/>[FR] DERIVES SUBSTITUES DE 1,3,8-TRIAZA-SPIRO(4,5)-DECAN-4-ONE UTILES COMME PROGENITEURS DE PRODUITS PHARMACEUTIQUES
申请人:——
公开号:WO1995022544A2
公开(公告)日:1995-08-24
[EN] Compounds having the general formula (I) are useful as preliminary stages in the production of new pharmaceuticals. Said pharmaceuticals are useful as neuroleptic or analgesic agents or as pharmaceuticals in nuclear medicine. [FR] Des composés ayant la formule générale (I) sont utiles comme progéniteurs de nouveaux produits pharmaceutiques. Ces produits pharmaceutiques sont utilisés comme agents neuroleptiques ou analgésiques ou comme produits pharmaceutiques en médecine nucléaire. [DE] Die Erfindung betrifft Verbindungen der allgemeinen Formel (I) als Vorstufen zur Herstellung neuer Pharmazeutika. Die genannten Pharmazeutika werden verwendet als Neuroleptika, Analgetika oder als Pharmaka in der Nuklearmedizin.