Design, Synthesis, and Biological Evaluation of New Peripheral 5HT2A Antagonists for Nonalcoholic Fatty Liver Disease
摘要:
Nonalcoholic fatty liver disease (NAFLD) is increasingly prevalent worldwide, causing serious liver complications, including non-alcoholic steatohepatitis. Recent findings suggest that peripheral serotonin (5-hydroxytryptamine, 5HT) regulates energy homeostasis, including hepatic lipid metabolism. More specifically, liver-specific 5HT(2A)( )knockout mice exhibit alleviated hepatic lipid accumulation and hepatic steatosis. Here, structural modifications of pimavanserin (CNS drug), a 5HT(2A) antagonist approved for Parkinson's disease, led us to synthesize new peripherally acting SHTZA antagonists. Among the synthesized compounds, compound 14a showed good in vitro activity, good liver microsomal stability, 5HT subtype selectivity, and no significant inhibition of CYP and hERG. The in vitro and in vivo blood-brain barrier permeability study proved that 14a acts peripherally. Compound 14a decreased the liver weight and hepatic lipid accumulation in high-fat-diet-induced obesity mice. Our study suggests new therapeutic possibilities for peripheral 5HT(2A) antagonists in NAFLD.
[EN] A PRODUCTION METHOD OF 1-(4-FLUOROBENZYL)-3-(4-ISOBUTOXYBENZYL)-1-(1-METHYLPIPERIDIN- 4-YL)UREA AND ITS DEUTERATED ANALOGS<br/>[FR] PROCÉDÉ DE PRODUCTION DU 1-(4-FLUOROBENZYL)-3-(4-ISOBUTOXYBENZYL)-1-(1-MÉTHYLPIPÉRIDINE-4-YL)URÉE ET DE SES ANALOGUES DEUTÉRÉS
申请人:ZENTIVA KS
公开号:WO2017054786A1
公开(公告)日:2017-04-06
The present invention relates to an improved production method of 1-(4-fluorobenzyl)-3-(4--isobutoxybenzyl)-1-(1--methylpiperidin-4-yl)urea (Pimavanserin), an inverse agonist of the serotonin 5-HT2A receptor of formula (I). Crude pimavanserin prepared by this method contains a very low quantity of the disubstituted impurity.
Provided is a method for preparing pimavanserin including reacting an intermediate compound represented by Formula (II) with N-(4-fluorobenzyl)-1-methylpiperidin-4-amine or a salt thereof, or reacting an intermediate compound represented by Formula (IV) with 4-isobutoxybenzylamine or a salt thereof, wherein L represents a heteroaryl group, —OR
1
or halogen, and wherein R
1
represents C
1
to C
10
alkyl or aryl. The present disclosure provides the method for preparing pimavanserin without the use of isocyanate intermediate.