Novel approach for chemotype hopping based on annotated databases of chemically feasible fragments and a prospective case study: new melanin concentrating hormone antagonists

J Med Chem. 2009 Apr 9;52(7):2076-89. doi: 10.1021/jm8016199.


A novel strategy for chemotype hopping, based on annotated databases of chemically feasible fragments and their oriented functionalization, is presented. A three-dimensional (3D) similarity analysis of project-oriented functionalized scaffolds provides a prioritized proposal for synthesis with the most appropriate linkers and optimal regiochemistry on R-groups. This strategy maximizes the potential of proprietary and commercially available compounds. A retrospective and prospective case study, on melanin concentrating hormone (MCH) antagonists, showing the impact on the drug discovery process of this new strategy by maintaining primary activity and improving key ADME/Tox property while enhancing intellectual property (IP) position is demonstrated.

MeSH terms

  • Central Nervous System Agents / chemistry
  • Databases, Factual*
  • Drug Discovery*
  • Hypothalamic Hormones / antagonists & inhibitors*
  • Hypothalamic Hormones / chemistry
  • Melanins / antagonists & inhibitors*
  • Melanins / chemistry
  • Models, Molecular
  • Pharmaceutical Preparations / chemical synthesis
  • Pharmaceutical Preparations / chemistry*
  • Pituitary Hormones / antagonists & inhibitors*
  • Pituitary Hormones / chemistry
  • Pyrazines / chemical synthesis
  • Pyrazines / chemistry
  • Quantitative Structure-Activity Relationship*
  • Receptors, Pituitary Hormone / antagonists & inhibitors
  • Receptors, Pituitary Hormone / chemistry
  • Solvents / chemistry
  • Static Electricity
  • Stereoisomerism
  • Water / chemistry


  • Central Nervous System Agents
  • Hypothalamic Hormones
  • Melanins
  • Pharmaceutical Preparations
  • Pituitary Hormones
  • Pyrazines
  • Receptors, Pituitary Hormone
  • Solvents
  • melanin-concentrating hormone receptor
  • Water
  • melanin-concentrating hormone