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Review

Cannabinoid receptor 2 (CB2) agonists and antagonists: a patent update

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Pages 843-856 | Received 18 Mar 2016, Accepted 19 May 2016, Published online: 07 Jun 2016
 

ABSTRACT

Introduction: Modulation of the CB2 receptor is an interesting approach for pain and inflammation, arthritis, addictions, neuroprotection, and cancer, among other possible therapeutic applications, and is devoid of central side effects.

Areas covered: This review highlights the novel scaffolds for CB2 ligands and the diverse therapeutic applications for CB2 modulators disclosed in patents published since 2012.

Expert opinion: Structural diversity of CB2 modulator scaffolds characterized the patent literature. Several CB2 agonists reached clinical Phase II for pain management and inflammation. Other therapeutic applications need to be explored such as neuroprotection and/or neurodegeneration.

Article highlights

  • The number of patent applications on CB2 modulators during these last 4 years is maintained compared to the period 2009-2012.

  • Patents of pharmaceutical companies are in general more oriented to claim large and structurally diverse series of CB2 agonists.

  • Academic researchers are generally focussing on new therapeutic applications of CB2 modulators.

  • The efficacy of CB2 selective agonists in the clinic for pain management and inflammation still needs to be proved.

This box summarizes key points contained in the article.

Declaration of interest

This work was supported by Spanish grants from the Spanish Ministry MINECO (SAF2012-40075-C02-02 and SAF2015-68580-C2) and from the Madrid Autonomic Community CAM S2010/BMD-2308. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

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