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.
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.
A number of derivatives of the lactone have been prepared and analysed.