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The essential oil of the aerial parts of Aristolochia indica Linn. (Anstolochiaceae) from South-India was analyzed by gas chromatographic-spectroscopic (GC-FID and GC-MS) and olfactoric methods to identify those compounds responsible for the characteristic odor as well as partly for the folk medicinal use of this plant. Especially sesqui- and monoterpenes were found to be dominating constituents of this essential oil, such as: β-caryophyllene, α-humulene, ishwarone, caryophyllene oxide I, ishwarol, ishwarane and aristolochene as well as linalool and α-terpinolene.The odor impression of the sample is described and the possible biological activity of some single volatiles shortly discussed.

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Abstract:The regioselective alkylation of an oxonaphthalene-annelated pyrrole system is reported. The regioselectivity of alkylation can be controlled by the selection of the solvent.

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