クロクサアリLasius fuliginosus Latreilleの大顎腺に含まれる抗菌活性物質の単離と同定

抄録

In the mandibular gland of Lasius fuliginosus, several terpenoids were contained. It was found that some of the contents inhibited the spore germination of the plant pathogenic fungi, Colletotrichum lagenarium by a TLC plate bioassay. The antifungal contents were extracted with n-hexane from the heads of workers. The main compound was eluded into 10% ether/hexane when the contents were chromatographed on a silica gel. The isolated compound was analyzed by using gas chromatography, gas chromatography-mass spectrometruy, 1^H-NMR, and 13^C-NMR. From these spectra the main antifungal compound was identified to be a new one, 3-formyl-7, 11-dimethyl-(2E, 6Z, 10)-dodecatrienal(FDDal). FDDal completely inhibited the spore germination of C. lagenarium at 1 ppm, and that of four species of insect pathogenic fungi at 10 ppm.