Design, synthesis and SAR analysis of novel potent and selective small molecule antagonists of NPBWR1 (GPR7)
摘要:
Novel smallmolecule antagonists ofNPBWR1 (GPR7) are herein reported. A high-throughput screening (HTS) of the Molecular Libraries-Small Molecule Repository library identified 5-chloro-4-(4-methoxyphenoxy)-2-(p-tolyl)pyridazin-3(2H)-one as a NPBWR1 hit antagonist with micromolar activity. Design, synthesis and structure-activity relationships study of the HTS-derived hit led to the identification of 5-chloro-2-(3,5-dimethylphenyl)-4-(4-methoxyphenoxy) pyridazin-3(2H)-one lead molecule with sub-micromolar antagonist activity at the target receptor and high selectivity against a panel of therapeutically relevant off-target proteins. This lead molecule may provide a pharmacological tool to clarify the molecular basis of the in vivo physiological function and therapeutic utility of NPBWR1 in diverse disease areas including inflammatory pain and eating disorders. (C) 2012 Elsevier Ltd. All rights reserved.
K-10 effectively catalyzed the condensation and substitution reactions. The approach was based on the direct cyclization of phthalaldehydicacid and opianic acid with substituted hydrazines. The reactions provided excellent yields and high selectivities in very short time (5-35 minutes). phthalazinones - phthalaldehydicacid - opianic acid - hydrazines - montmorillonite K-10 - microwave heating
On the application of the extended Fujita–Nishioka equation to polysubstituted systems. A kinetic study of the rearrangement of several poly-substituted Z-arylhydrazones of 3-benzoyl-5-phenyl-1,2,4-oxadiazole into 2-aryl-4-benzoylamino-5-phenyl-1,2,3-triazoles in dioxane/water
or penta-substituted Z-arylhydrazones of 3-benzoyl-5-phenyl-1,2,4-oxadiazole (1a–18a) into the relevant 2-aryl-4-benzoylamino-5-phenyl-1,2,3-triazoles (1b–18b) have been determined in 1:1 (v:v) dioxane/water in a wide range of pS+ (3.80–12.50) at different temperatures. The kinetic data obtained have been correlated with those previously collected for the rearrangement of ortho-, meta- and para-substituted
‘One-pot’ synthesis of 4-substituted 1,5-diaryl-1H-pyrazole-3-carboxylates via lithium tert-butoxide-mediated sterically hindered Claisen condensation and Knorr reaction
作者:Jian-An Jiang、Wei-Bin Huang、Jiao-Jiao Zhai、Hong-Wei Liu、Qi Cai、Liu-Xin Xu、Wei Wang、Ya-Fei Ji
DOI:10.1016/j.tet.2012.11.012
日期:2013.1
A concise ‘one-pot’ synthesis of a variety of 4-substituted 1,5-diaryl-1H-pyrazole-3-carboxylates has been developed in moderate to good yields with excellent regioselectivity. Less cost lithium tert-butoxide has been identified as a base for sterically hindered Claisencondensation to efficiently generate the labile 3-substituted 4-aryl-2,4-diketoesters. Furthermore, extensive studies lead to a ‘one-pot’
Alumina-promoted synthesis of N-aryl-1,2,4-triazoles from substituted hydrazines and imides
作者:William C. Neuhaus、Gustavo Moura-Letts
DOI:10.1016/j.tetlet.2016.09.086
日期:2016.11
Herein we report the highly efficient, environmentally friendly alumina-promoted synthesis of N-aryl-1,2,4-triazoles with a wide variety of substitution patterns from commercially available hydrazines with symmetrical and unsymmetrical imides. Aromatic hydrazines with a variety of substitution patterns provided the corresponding 1,2,4-triazoles in very high yields. Unsymmetrical imides with a wide
The present invention relates to 2,3,4,9-tetrahydro-1 H-carbazoles of the general formula I,
in which Q, X, W, R1, R2, R3, R4 and R5 have the meaning as defined in the description.
The compounds according to the invention are effective FSH antagonists and can be used for example for fertility control in men or in women, or for the prevention and/or treatment of osteoporosis.