Effect of 1-Substitution on Tetrahydroisoquinolines as Selective Antagonists for the Orexin-1 Receptor
摘要:
Selective blockade of the orexin-1 receptor (OX1) has been suggested as a potential approach to drug addiction therapy because of its role in modulating the brain's reward system. We have recently reported a series of tetrahydroisoquinoline-based OX1 selective antagonists. Aimed at elucidating structure-activity relationship requirements in other regions of the molecule and further enhancing OX1 potency and selectivity, we have designed and synthesized a series of analogues bearing a variety of substituents at the 1-position of the tetrahydroisoquinoline. The results show that an optimally substituted benzyl group is required for activity at the OX1 receptor. Several compounds with improved potency and/or selectivity have been identified. When combined with structural modifications that were previously found to improve selectivity, we have identified compound 73 (RTIOX-251) with an apparent dissociation constant (K-e) of 16.1 nM at the OX1 receptor and >620-fold selectivity over the OX2 receptor. In vivo, compound 73 was shown to block the development of locomotor sensitization to cocaine in rats.
[EN] TETRAHYDROPROTOBERBINE COMPOUNDS AND USES THEREOF IN THE TREATMENT OF NEUROLOGICAL, PSYCHIATRIC AND NEURODEGENERATIVE DISEASES<br/>[FR] COMPOSÉS TÉTRAHYDROPROTOBERBINES ET LEURS UTILISATIONS DANS LE TRAITEMENT DE MALADIES NEUROLOGIQUES, PSYCHIATRIQUES ET NEURODÉGÉNÉRATIVES
申请人:MILLER JAMES JACKSON
公开号:WO2013020229A1
公开(公告)日:2013-02-14
Tetrahydroprotoberbine (THPB) compounds and their use in the treatment of neurological, psychiatric and neurodegenerative diseases is provided. The compounds include d-govadine, l-govadine and racemic govadine, as well as d-THPBs of general formula (I). Enantioselective processes for preparing compounds of formula (I), and d- and l-govadine are also provided.(I)
TETRAHYDROPROTOBERBINE COMPOUNDS AND USES THEREOF IN THE TREATMENT OF NEUROLOGICAL, PSYCHIATRIC AND NEURODEGENERATIVE DISEASES
申请人:MILLER James Jackson
公开号:US20150306092A1
公开(公告)日:2015-10-29
Tetrahydroprotoberbine (THPB) compounds and their use in the treatment of neurological, psychiatric and neurodegenerative diseases is provided. The compounds include d-govadine, l-govadine and racemic govadine, as well as d-THPBs of general formula (I). Enantioselective processes for preparing compounds of formula (I), and d- and l-govadine are also provided.(I)