MONOTERPENES OF SOME ARTEMISIA AND TANACETUM SPECIES GROWN IN ENGLAND

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Abstract
The monoterpene fractions from the leaf oils of twenty five Artemisia species and four Tanacetum species grown in England have been analysed by gas–liquid chromatography and the main components have been isolated and characterised. Thujane and camphane derivatives (particularly thujones and camphor) and 1,8–cineole were the major and most widespread structural types in both genera; and menthane, carane and pinane derivatives and acyclic terpenses were in nearly every case either absent or present in small proportions. The Tanacetum species showed a pattern of monoterpenes that was quite different from that of typical Chrysanthemum species, and are best classified on these phytochemical grounds in a separate genus rather than being renamed Chrysanthemums as some authorities have suggested.

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