Abstract
Leaf extracts from different Sri Lankan provenances of Clausena indica were compared by HPLC linked with diode array detection. Remarkable chemical differences towards different types of amides were observed between the collections from the northern dry semi-evergreen forests and the central montane rainforests. Apart from the already known phenethyl cinnamide, four new tryptamine derived amides were detected with different acid moieties: the cinnamic acid amides named balasubramide and prebalamide and the isovaleric acid amides named madugin and methylmadugin. Balasubramide is characterised by an eightmembered lactam ring. All structures were established by spectral analyses.
Published Version
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