title: Further anti-feedant neo-clerodanes from Teucrium tomentosum.
abstract: Reinvestigation of the acetone extract of Teucrium tomentosum yielded a new neo-clerodane diterpenoid, teuctomin (1), along with 6-O-acetyl-teucmicropodin (2), teugracilin-A (3), 6alpha-hydroxyteuscordin (4) and 6alpha-acetoxyteuscordin (5). The structure of the new compound was elucidated comprehensively using 1D and 2D NMR methods. Compounds showed effective antifeedancy against Plutella xylostella at 10 microg cm(-2) of leaf area.
authors.affiliation: Department of Chemistry, University of Minho, Braga 4710-057, Portugal. drarvi@hotmail.com
authors.forename: Sivasubramanian
authors.initials: S
authors.lastname: Aravind
authors.forename: J
authors.initials: J
authors.lastname: Balachandran
authors.forename: Munuswamy
authors.initials: M
authors.lastname: Ramanujam Ganesh
authors.forename: Gadepalli Narasimha
authors.initials: GN
authors.lastname: Krishna Kumari
mesh_terms: D000096:Acetone; D000818:Animals; D045785:Diterpenes, Clerodane / Q000302:isolation & purification* / Q000494:pharmacology*; D005247:Feeding Behavior / Q000187:drug effects*; D007306:Insecticides / Q000302:isolation & purification* / Q000494:pharmacology*; D008968:Molecular Conformation; D009036:Moths / Q000502:physiology*; D010936:Plant Extracts / Q000737:chemistry; D012997:Solvents; D031367:Teucrium / Q000737:chemistry*
chemical_list: D045785:Diterpenes, Clerodane; D007306:Insecticides; D010936:Plant Extracts; D012997:Solvents; D000096:Acetone