A new convenient synthetic method and preliminary pharmacological characterization of triazinediones as prokineticin receptor antagonists
摘要:
A new efficient synthetic method to obtain prokineticin receptor antagonists based on the triazinedione scaffold is described. In this procedure the overall yield improves from 13% to about 54%, essentially for two factors: 1) N-(chlorocarbonyl) isocyanate is no more used, it represents the yield limiting step with an average yield not exceeding 30%. 2) The Mitsunobu reaction is not involved in the new synthetic scheme avoiding the use of time and solvent consuming column chromatography. All synthesized triazinediones were preliminary pharmacologically screened in vivo for their ability to reduce the Bv8-induced thermal hyperalgesia. In this assay all compounds displayed EC50 values in the picomolar-subpicomolar range, some triazinediones containing a 4-halogen substituted benzyl group in position 5 showed the best activity. The analogues containing a 4-fluorine atom (PC-7) and a 4-bromobenzyl group (PC-25) resulted 10 times more potent than the reference PC-1 that bears a 4-ethylbenzyl group. While the 4-trifluoromethylbenzyl substituted analog (PC-27) was 100 times more potent as compared to PC1. (C) 2014 Elsevier Masson SAS. All rights reserved.
[EN] COMPOUND LIBRARIES OF N-(AMINOCARBONYL)-PIPERIDINE-4-CARBOXAMIDE DERIVATIVES CAPABLE OF BINDING TO G-PROTEIN COUPLED RECEPTORS<br/>[FR] BANQUE DE COMPOSES CONTENANT DES DERIVES DE N-(AMINOCARBONYL)-PIPERIDINE-4-CARBOXAMIDE, CAPABLES DE SE FIXER AUX RECEPTEURS COUPLES A LA PROTEINE G
申请人:BIOFOCUS PLC
公开号:WO2004058259A1
公开(公告)日:2004-07-15
The present invention provides a compound library targeted to receptors with a requirement for a positively charged amine in their structure activity relationships. It is designed to produce both agonists and antagonists and so is expected to be especially useful in producing ligands for orphan receptors. The library is designed around an acylurea coupled to a piperidine moiety. A combination of specific motifs R2 and R1 are appended from the central scaffold and are designed to pick up different interactions at a receptor site. The library comprises or consists of a set of structurally related compounds of general formula (I).
[EN] THIADIAZOLONE DERIVATIVES USEFUL IN THE TREATMENT OF DIABETES<br/>[FR] DÉRIVÉS DE THIADIAZOLONE UTILES DANS LE TRAITEMENT DU DIABÈTE
申请人:BALTIC BIO AB
公开号:WO2013108026A1
公开(公告)日:2013-07-25
According to the invention there is provided a compound of formula I, wherein, R1 to R4 have meanings given in the description, which compounds are useful in the treatment of diabetes.
根据本发明提供了一种I式化合物,其中R1到R4的含义如描述中所给,这些化合物在糖尿病治疗中有用。
Regioselective Synthesis of Benzimidazolones via Cascade C–N Coupling of Monosubstituted Ureas
作者:Johannes B. Ernst、Nicholas E. S. Tay、Nathan T. Jui、Stephen L. Buchwald
DOI:10.1021/ol501531q
日期:2014.7.18
A direct method for the regioselective construction of benzimidazolones is reported wherein a single palladium catalyst is employed to couple monosubstituted urea substrates with differentially substituted 1,2-dihaloaromatic systems. In this method, the catalyst is able to promote a cascade of two discrete chemoselective C-N bond-forming processes that allows the highly selective and predictable formation of complex heterocycles from simple, readily available starting materials.