Optically Active Acetotriglycerides from the Lipids of a Scale Insect, <i>Icerya purchasi</i> MASKELL (Hemiptera: Margarodidae)

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  • HASHIMOTO Akira
    Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture
  • KITAOKA Shozaburo
    Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture

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  • イセリヤカイガラムシから光学活性アセトグリセリドの分離
  • イセリヤカイガラムシ カラ コウガク カッセイ アセトグリセリド ノ ブンリ

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Abstract

Optically active acetotriglycerides were isolated from the lipids of a scale insect, Icerya purchasi. The hydrogenated Icerya acetotriglycerides gave a plain, negative opticalrotatory dispersion curve. Comparison of the triglycerides with those of known configuration in the optical-rotatory behavior showed that the Icerya acetotriglycerides were essentially (S)-1, 2-diacyl-3-acetin. The constituent acetotriglyceride acids, other than acetic, were ordinary long-chain fatty acids. Stearic, oleic and linoleic acids were present in abundance in the 2-position.

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