3 years ago

Synthesis of novel and functionally selective non-competitive muscarinic antagonists as chemical probes

Synthesis of novel and functionally selective non-competitive muscarinic antagonists as chemical probes
Alena Randakova, John M. Boulos, John F. Boulos, Jelena Momirov, Jan Jakubik
Muscarinic receptors are known to play important biological roles and are drug targets for several human diseases. In a pilot study, novel muscarinic antagonists were synthesized and used as chemical probes to obtain additional information of the muscarinic pharmacophore. The design of these ligands made use of current orthosteric and allosteric models of drug–receptor interactions together with chemical motifs known to achieve muscarinic receptor selectivity. This approach has led to the discovery of several non-competitive muscarinic ligands that strongly bind at a secondary receptor site. These compounds were found to be non-competitive antagonists that completely abolished carbachol activation in functional assays. Several of these compounds antagonized functional response to carbachol with great potency at M1 and M4 than at the rest of receptor subtypes. Synthesis of various functionally selective muscarinic antagonists that bind to all five receptor subtypes with similar affinity. Complete inhibition of the orthosteric antagonist [3H]NMS suggests steric interaction between tested compounds and [3H]NMS, while antagonism of carbachol-induced functional response suggests non-competitive interaction as potency of functional antagonism pKB is greater than affinity of the compounds pKI.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/cbdd.13059

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.