Potent and selective N-(4-sulfamoylphenyl)thiourea-based GPR55 agonists
摘要:
To date, many known G protein-coupled receptor 55 (GPR55) ligands are those identified among the cannabinoids. In order to further study the function of GPR55, new potent and selective ligands are needed. In this study, we utilized the screening results from PubChem bioassay AID 1961 which reports the results of Image-based HIS for Selective Agonists of GPR55. Three compounds, CID1792579, CID1252842 and CID1011163, were further evaluated and used as a starting point to create a series of nanomolar potency GPR55 agonists with N-(4-sulfamoylphenyl)thiourea scaffold. The GPR55 activity of the compounds were screened by using a commercial beta-arrestin PathHunter assay and the potential compounds were further evaluated by using a recombinant HEK cell line exhibiting GPR55-mediated effects on calcium signalling. The designed compounds were not active when tested against various endocannabinoid targets (CB1R, CB2R, FAAH, MGL, ABHD6 and ABHD12), indicating compounds' selectivity for the GPR55. Finally, structure activity relationships of these compounds were explored. (C) 2015 Elsevier Masson SAS. All rights reserved.
We have developed catalytic allylation reactions of sulfonylimidates using allylic alcohols as allylating reagents. Stoichiometric amounts of neither activators nor bases are required in this reaction.
N-acylpyrroles were synthesized via olefin ring-closingmetathesis of diallylamines and in situ oxidative aromatization in the presence of the ruthenium Grubbs catalyst and a suitable copper catalyst. In the presence of Cu(OTf)2 and CuBr2, the reaction afforded N-sulfonyl- and N-acylpyrroles, respectively, in one pot. Under an oxygen atmosphere, the reaction went smoothly without the need of hydroperoxide
Metal‐Catalyzed Organic Reactions by Resonant Acoustic Mixing**
作者:Lori Gonnet、Cameron B. Lennox、Jean‐Louis Do、Ivani Malvestiti、Stefan G. Koenig、Karthik Nagapudi、Tomislav Friščić
DOI:10.1002/anie.202115030
日期:2022.3.21
ResonantAcousticMixing (RAM) enables mechanochemical organic synthesis that avoids milling or crushing media, as well as bulk solvents. The RAM methodology enables significant simplification and improvement of mechanochemical olefin metathesis, the first mechanochemical strategy for ene-yne metathesis, and permits the direct, 200-fold scaling-up of the mechanochemical synthesis of pharmaceutically
There is provided a process for the preparation of a compound of formula I, (I), or a pharmaceutically acceptable derivative thereof, wherein A, B, G, R
1
, R
2
, R
3
, R
4
and R
41
to R
46
have meanings given in the description, which process comprises the dehydrative cyclisaton of a compound of formula II, (II).
We describe the development of a mechanochemical approach for Ru-catalyzed olefinmetathesis, including cross-metathesis and ring-closing metathesis. The method uses commercially available catalysts to achieve high-yielding, rapid, room-temperature metathesis of solid or liquid olefins on a multigram scale using either no or only a catalytic amount of a liquid.