Pyrrolidonyl and Pyridyl Alkaloids in Lymantria dispar

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Deml, Reinhold:
Pyrrolidonyl and Pyridyl Alkaloids in Lymantria dispar.
In: Zeitschrift für Naturforschung C. Bd. 58 (2003) . - S. 860-866.
ISSN 1865-7125

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Abstract

The occurrence and metabolism of nicotine and related N-containing compounds in bodyfluids of the gipsy moth were addressed. Thin layer chromatographic studies clearly showedthe simultaneous presence of GABA and 2-pyrrolidone but not of GABamide in the larvalhaemolymph and osmeterial secretion of Lymantria dispar as well as in the correspondingbody fluids of the saturniids, Saturnia pavonia and Attacus atlas. Furthermore, feeding andinjection experiments using alkylated precursors and combined gas chromatography/massspectrometry gave evidence of the transformation of 2-pyrrolidone to nicotine and of nicotinicacid to nicotinamide in caterpillars of L. dispar. Based on these results, on the earlierdescribed variation of the secondary-compound patterns of L. dispar during its development,and on literature data, metabolic pathways for the hitherto detected pyridyl and pyrrolidonylalkaloids in Lymantriidae (and possibly Saturniidae) are proposed.