1. Academic Validation
  2. Inhalation by design: novel ultra-long-acting β(2)-adrenoreceptor agonists for inhaled once-daily treatment of asthma and chronic obstructive pulmonary disease that utilize a sulfonamide agonist headgroup

Inhalation by design: novel ultra-long-acting β(2)-adrenoreceptor agonists for inhaled once-daily treatment of asthma and chronic obstructive pulmonary disease that utilize a sulfonamide agonist headgroup

  • J Med Chem. 2010 Sep 23;53(18):6640-52. doi: 10.1021/jm1005989.
Paul A Glossop 1 Charlotte A L Lane David A Price Mark E Bunnage Russell A Lewthwaite Kim James Alan D Brown Michael Yeadon Christelle Perros-Huguet Michael A Trevethick Nicholas P Clarke Robert Webster Rhys M Jones Jane L Burrows Neil Feeder Stefan C J Taylor Fiona J Spence
Affiliations

Affiliation

  • 1 Department of Worldwide Medicinal Chemistry, Pfizer Global Research and Development, Sandwich Laboratories, Ramsgate Road, Kent CT139NJ, UK. paul.glossop@pfizer.com
Abstract

A novel series of potent and selective sulfonamide derived β(2)-adrenoreceptor agonists are described that exhibit potential as inhaled ultra-long-acting bronchodilators for the treatment of asthma and chronic obstructive pulmonary disease. Analogues from this series mediate very long-lasting smooth muscle relaxation in guinea pig tracheal strips. The sulfonamide agonist headgroup confers high levels of intrinsic crystallinity that could relate to the acidic sulfonamide motif supporting a zwitterionic form in the solid state. Optimization of pharmacokinetic properties was achieved through targeted introduction of a phenolic moiety to support rapid phase II clearance, thereby minimizing systemic exposure following inhalation and reducing systemically mediated adverse events. Compound 38 (PF-610355) is identified as a clinical candidate from this series, with in vivo duration of action studies confirming its potential for once-daily use in humans. Compound 38 is currently in advanced phase II clinical studies.

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