JOURNAL 844


Records of Natural Products
VOLUME & ISSUE
Year: 2019 Issue: 1 January-February
PAGES
p.81 - 84
STATISTICS
Viewed 1396 times.
AUTHORS
    Takahiro Ishii, Yuto Shinjo, Miyu Miyagi, Hiroshi Matsuura, Tsuyoshi Abe, Norio Kikuchi and Minoru Suzuki
PDF OF ARTICLE

GRAPHICAL ABSTRACT


ABSTRACT


Three known secondary metabolites were isolated from the organic extract of Laurencia intricata. Their structures were identified by NMR and MS experiments and comparison with the literature data. An aromadendrane sesquiterpene, (+)-cyclocolorenone showed strong repellent activity against the maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) adults. It had the same activity as natural insecticides, pyrethrins, with a ED 50 value of 2.0 m g/cm 2. This is the first report of insect repellent activity of (+)-cyclocolorenone. The results suggest that the red alga Laurencia is a promising source of bioactive compounds which can be used as potential biocontrol agents for stored-product insects.

KEYWORDS
  • Cyclocolorenone
  • insect repellent activity
  • Sitophilus zeamais
  • Laurencia intricata

SUPPORTING INFORMATION


Supporting Information
Download File 66-RNP-1802-221-SI.pdf (872.42 KB)