28 ランブータンのシアノリピッド : 単離と構造決定合成およびその殺虫活性について

概要

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Cyanolipids are a unique group of plant lipids classified into four types I-IV, characteristic to seed oil of Sapindaceous plants. This interesting class of lipids has never been purified completely and structual discussions have always been carried out using mixtures, since most of the cyanolipid mixtures behave like a homogeneous component on chromatographic or spectral study. We have succeeded the first purification of the major three kinds of type II cyanolipids N-IIb, N-IIc, and N-IId of Nepherium lappaceum by using reverse phase HPLC, and established the full structure to be 1b, 1c, and 1d, respectively. Recent discovery of the insecticidal activity of cyanolipids prompted us to design a general synthesis of this class of natural products. Thus, a very simple procedure using phase-transfer catalyst (solid-liquid) has been developed, and three kinds of the type II (1b, 1c, and 1d) and three kinds of the type III (2b, 2e, and 2f) lipids have been prepared together with more than twenty artificial analogs. Biological examinations of these synthetic products are examined using hatched larvae of insect pests of American cotton field.
天然有機化合物討論会の論文
1983-09-15