New pyrazolo[3,4-b]pyrazines: synthesis and biological activity

Pharmazie. 2000 Aug;55(8):572-6. doi: 10.1002/chin.200047151.

Abstract

Some new pyrazolo[3,4-b]pyrazines and related heterocycles were synthesized and evaluated for their antifungal and antiparasitic activities. The key intermediate, 6-amino-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyrazine-5-carbonitrile (3) was obtained in a one-pot synthesis via the reaction of 5-amino-3-methyl-4-nitroso-1-phenylpyrazole 2 with malononitrile.

MeSH terms

  • Animals
  • Antifungal Agents / chemical synthesis*
  • Antifungal Agents / pharmacology
  • Fungi / drug effects
  • Leishmania / drug effects
  • Magnetic Resonance Spectroscopy
  • Microbial Sensitivity Tests
  • Parasites / drug effects*
  • Pyrazines / chemical synthesis*
  • Pyrazines / pharmacology
  • Pyrazoles / chemical synthesis*
  • Pyrazoles / pharmacology
  • Spectrophotometry, Infrared
  • Trichomonas vaginalis / drug effects

Substances

  • Antifungal Agents
  • Pyrazines
  • Pyrazoles