Synthesis and pharmacological investigation of new N-hydroxyalkyl-2- aminophenothiazines exhibiting marked MDR inhibitory effect

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10 Citations (Scopus)

Abstract

Novel N-hydroxyalkyl-2-aminophenothiazines implying a tetrazole moiety at the alkyl chain have been synthesized by hydroboration-oxidation of dienes followed by Buchwald-Hartwig cross-coupling reaction. Also, some sulfoxide and sulfone derivatives have been prepared by selective oxidations. MDR inhibition studies on rat hepatocyte cell culture revealed that some derivatives exhibit marked biological efficacy exceeding that of the standard verapamil (e.g., 3h, 4h, 16). Selected derivatives were subjected to chemical resolution to provide both enantiomers which were shown of similar activity on P-gp interaction measurements. The new compounds exhibited no toxicity.

Original languageEnglish
Pages (from-to)3760-3779
Number of pages20
JournalBioorganic and Medicinal Chemistry
Volume21
Issue number13
DOIs
Publication statusPublished - Jul 1 2013

Keywords

  • Buchwald-Hartwig cross-coupling reaction
  • MDR inhibition
  • N-Hydroxyalkyl-2-aminophenothiazines
  • Resolution of racemate
  • Sulfoxide and sulfone derivatives

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmaceutical Science
  • Drug Discovery
  • Clinical Biochemistry
  • Organic Chemistry

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