Essential oil ofArtemisia scoparia
The chemical composition of the essential oil of oriental wormwood growing in Kazathstan has been investigated. Of the components of the oil, 28 have been identified, and the structure of an acetylenic hydrocarbon has been refined.
Chemical examination ofArtemisia scoparia Waldst. and Kit
Summary and Conclusion1.From the flowering heads and seeds ofArtemisia scoparia, which is the only species ofArtemisia growing in the plains of India, a lactone and an essential oil have been obtained in yields of 0·92 and 0·75 per cent. respectively.2.The lactone, which has been named “Scoparin”, has been found to have the molecular formula C16H20O5. It contains an α: β-unsaturation, one ketonic group and two methoxyl groups.3.A number of derivatives of the lactone have been prepared and analysed.
Essential Oils and Their Constituents XXXI. Cyperenone—a New Sesquiterpene Ketone From Oil of Cyperus scarosius
A new sesquiterpene ketone (C 15 H 22 O; 2,4-dinitrophenylhydrazone, m.p. 227.5°) was isolated from the essential oil of Cyperus scarosius R.Br. On hydrogenation it gave a dihydro compound, and on deoxidation it yielded the tricyclic hydrocarbon cyperene. The ketone was synthesized from cyperene by chromic acid oxidation. It is assigned structure I and named cyperenone in view of its relationship to cyperene.