Further anti-feedant neo-clerodanes from Teucrium tomentosum.
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.
Aravind
Sivasubramanian
S
Department of Chemistry, University of Minho, Braga 4710-057, Portugal. drarvi@hotmail.com
Balachandran
J
J
Ramanujam Ganesh
Munuswamy
M
Krishna Kumari
Gadepalli Narasimha
GN
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*
D045785:Diterpenes, Clerodane; D007306:Insecticides; D010936:Plant Extracts; D012997:Solvents; D000096:Acetone