Discovery of 4,4-disubstituted quinazolin-2-ones as T-type calcium channel antagonists

James C. Barrow, Kenneth E. Rittle, Thomas S. Reger, Zhi Qiang Yang, Phung Bondiskey, Georgia B. McGaughey, Mark G. Bock, George D. Hartman, Cuyue Tang, Jeanine Ballard, Yuhsin Kuo, Thomayant Prueksaritanont, Cindy E. Nuss, Scott M. Doran, Steven V. Fox, Susan L. Garson, Richard L. Kraus, Yuxing Li, Michael J. Marino, Valerie Kuzmick GraufeldsVictor N. Uebele, John J. Renger

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A novel series of quinazolinone T-type calcium channel antagonists have been prepared and evaluated using in vitro and in vivo assays. Optimization of the screening hit 3 by modifications of the 3- and 4-positions of the quinazolinone ring afforded potent and selective antagonists that displayed in vivo central nervous system efficacy in epilepsy and tremor models, as well as significant effects on rat active wake as measured by electrocorticogram.

Original languageEnglish (US)
Pages (from-to)75-79
Number of pages5
JournalACS Medicinal Chemistry Letters
Issue number2
StatePublished - May 13 2010
Externally publishedYes


  • Quinazolin-2-ones
  • T-type calcium channel
  • calcium channel antagonists
  • electrocorticogram
  • epilepsy
  • tremor

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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