Occurrence of the insecticidal 16,17-didehydro-16(E)-stemofoline in Stemona collinsae.
The occurrence of two alkaloids, 16,17-didehydro-16(E)-stemofoline and its isomer at C-4, 16,17-didehydro-4(E)-16(E)-stemofoline, were found together with a known insecticidal compound, stemofoline, in Stemona collinsae. The 16,17-didehydro-16(E)-stemofoline displayed higher insecticidal and antifeedant activities against the diamondback moth larvae than stemofoline.
Jiwajinda
S
S
Central Laboratory and Greenhouse Complex, Kasetsart University, Nakhon-Pathom, Thailand. rdiswj@nontri.ku.ac.th
Hirai
N
N
Watanabe
K
K
Santisopasri
V
V
Chuengsamarnyart
N
N
Koshimizu
K
K
Ohigashi
H
H
D000818:Animals; D006576:Heterocyclic Compounds, 4 or More Rings / Q000032:analysis* / Q000378:metabolism* / Q000633:toxicity; D007306:Insecticides / Q000032:analysis* / Q000633:toxicity; D007814:Larva; D019668:Liliaceae / Q000737:chemistry*; D015394:Molecular Structure; D009036:Moths; D010936:Plant Extracts / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D013785:Thailand
C430219:16,17-didehydrostemofoline; D006576:Heterocyclic Compounds, 4 or More Rings; D007306:Insecticides; D010936:Plant Extracts; C430220:stemofoline