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Identification of saturated and unsaturated 1-methoxyalkanes from the Thai millipede Orthomorpha communis as
Aem Nuylert1,2, Yasumasa Kuwahara1, Tipparat Hongpattarakere3
1Asano Active Enzyme Molecular Project, JST, ERATO, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan.
Abstract:
Mixtures of saturated and unsaturated 1-methoxyalkanes (alkyl methyl ethers, representing more than 45.4% of the millipede hexane extracts) were newly identified from the Thai polydesmid millipede, Orthomorpha communis, in addition to well-known polydesmid defense allomones (benzaldehyde, benzoyl cyanide, benzoic acid, mandelonitrile, and mandelonitrile benzoate) and phenolics (phenol, o- and p-cresol, 2-methoxyphenol, 2-methoxy-5-methylphenol and 3-methoxy-4-methylphenol). The major compound was 1-methoxy-n-hexadecane (32.9%), and the mixture might function as "raincoat compounds" for the species to keep off water penetration and also to prevent desiccation.