Synthesis and biological evaluation of new 6-hydroxypyridazinone benzisoxazoles: Potential multi-receptor-targeting atypical antipsychotics
摘要:
In recent years, multi-targeting directed ligands have attracted great interest as possible new atypical antipsychotics. Combinations of dopamine and serotonin receptor ligands within single molecules might afford new therapeutic opportunities. Herein, we describe the synthesis of a novel series of 6-hydroxypyridazinone benzisoxazoles and their binding behaviors to different receptors in terms of atypical antipsychotic behaviors. The most potent compound (46) exhibited excellent affinities for certain receptors (D-2, K-i = 0.5 +/- 0.07 nM; 5-HT1A, K-i = 5.9 +/- 0.8 nM; 5-HT2A, K-i = 0.3 +/- 0.01 nM; 5-HT6, K-i = 0.5 +/- 0.04 nM) and combined with low affinities for the H-1, 5-HT2C, and adrenergic alpha(1) receptors. In contrast to risperidone, compound 46 exhibited a high cataleptic threshold; this may be useful in the development of a novel class of drugs treating schizophrenia. (C) 2016 Elsevier Masson SAS. All rights reserved.
framework, a new series of potentσ1receptor ligands associated with pharmacological antineuropathic pain activity was synthesized and is described in this article. In vitro receptor binding studies revealed highσ1receptor affinity (Ki σ1 = 1.4 nM) and excellent selectivity over not only σ2 receptor (1366-fold) but also other CNS targets (adrenergic, μ-opioid, sertonerigic receptors, etc.) for 2-(3,4-d
In recent years, multi-targeting directed ligands have attracted great interest as possible new atypical antipsychotics. Combinations of dopamine and serotonin receptor ligands within single molecules might afford new therapeutic opportunities. Herein, we describe the synthesis of a novel series of 6-hydroxypyridazinone benzisoxazoles and their binding behaviors to different receptors in terms of atypical antipsychotic behaviors. The most potent compound (46) exhibited excellent affinities for certain receptors (D-2, K-i = 0.5 +/- 0.07 nM; 5-HT1A, K-i = 5.9 +/- 0.8 nM; 5-HT2A, K-i = 0.3 +/- 0.01 nM; 5-HT6, K-i = 0.5 +/- 0.04 nM) and combined with low affinities for the H-1, 5-HT2C, and adrenergic alpha(1) receptors. In contrast to risperidone, compound 46 exhibited a high cataleptic threshold; this may be useful in the development of a novel class of drugs treating schizophrenia. (C) 2016 Elsevier Masson SAS. All rights reserved.
Ru(II)-Catalyzed C–H Activation and Annulation Reaction via Carbon–Carbon Triple Bond Cleavage
作者:Rashmi Prakash、Bidisha R. Bora、Romesh C. Boruah、Sanjib Gogoi
DOI:10.1021/acs.orglett.8b00643
日期:2018.4.20
An unprecedented Ru(II)-catalyzed C–H activation and annulation reaction, which proceeds via C–C triple bond cleavage, is reported. This reaction of 2-phenyldihydrophthalazinediones with alkynes, which works most efficiently in the presence of bidented ligand 1,3-bis(diphenylphosphino)propane, affords good yields of substituted quinazolines.