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Neo-clerodane insect antifeedants fromScutellaria galericulata

Authors
Journal
Phytochemistry
0031-9422
Publisher
Elsevier
Publication Date
Volume
29
Issue
6
Identifiers
DOI: 10.1016/0031-9422(90)85018-b
Keywords
  • Scutellaria Galericulata
  • Labiatae
  • Skullcap
  • Neo-Clerodane Diterpenoids
  • Jodrellin B
  • Jodrellin T
  • 14
  • 15-Dihydrojodrellin T
  • Galericulin
  • Insect Antifeedant.

Abstract

Abstract Four neo-clerodane diterpenoids have been isolated from aerial material of Scutellaria galericulata. Three compounds, jodrellin T, 14,15-dihydrojodrellin T and galericulin, are novel structures. The fourth, jodrellin B has been previously isolated from Scutellaria woronowii. Jodrellin B is amongst the most potent neo-clerodane antifeedants so far described, 14,15-dihydrojodrellin T is also active. Chemical structures were rigorously determined by spectroscopic methods.

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