Discovery of the ROCK inhibitor netarsudil for the treatment of open-angle glaucoma

Bioorg Med Chem Lett. 2016 May 15;26(10):2475-2480. doi: 10.1016/j.bmcl.2016.03.104. Epub 2016 Apr 1.

Abstract

Inhibition of Rho kinase (ROCK) to improve fluid outflow through the trabecular meshwork and lower intraocular pressure is a strategy for the development of new anti-glaucoma agents. Alpha-aryl-beta-amino isoquinoline analogs were identified as potent ROCK inhibitors. Compounds that provided a longer duration of intraocular pressure reduction in Dutch Belted rabbits also inhibited norepinephrine transporter. Ester 60 improved bioavailability of its parent ROCK inhibitor, 29 (Ki=0.2nM) and demonstrated an effective and sustained IOP reduction for 24h after dosing. From these studies, netarsudil (a.k.a. AR-13324) was discovered and is currently in clinical trials for the treatment of glaucoma and ocular hypertension.

Keywords: AR-13324; Glaucoma; Intraocular pressure (IOP); Rho kinase (ROCK); Trabecular meshwork.

MeSH terms

  • Animals
  • Benzoates / pharmacology*
  • Disease Models, Animal
  • Drug Evaluation, Preclinical / methods
  • Glaucoma, Open-Angle / drug therapy*
  • Humans
  • Intraocular Pressure / drug effects
  • Molecular Structure
  • Norepinephrine Plasma Membrane Transport Proteins / antagonists & inhibitors
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry*
  • Protein Kinase Inhibitors / pharmacology*
  • Rabbits
  • Serotonin Plasma Membrane Transport Proteins / metabolism
  • Structure-Activity Relationship
  • Trabecular Meshwork / drug effects
  • beta-Alanine / analogs & derivatives*
  • beta-Alanine / pharmacology
  • rho-Associated Kinases / antagonists & inhibitors*

Substances

  • Benzoates
  • Norepinephrine Plasma Membrane Transport Proteins
  • Protein Kinase Inhibitors
  • SLC6A2 protein, human
  • SLC6A4 protein, human
  • Serotonin Plasma Membrane Transport Proteins
  • beta-Alanine
  • ROCK2 protein, human
  • rho-Associated Kinases
  • netarsudil