ChemInform Abstract: Constituents of the Essential Oil of Strobilanthes auriculatus.

Abstract

260ChemInform Abstract The new natural products (II) and (III) are among 23 identified constituents of the title oil, containing a surprisingly high amount of (-)-isoborneol (I) and related compounds (> 82%). The structure of (IIa) is confirmed by a reinvestigation of the synthesis of the parent diol.

Chemical and Biological Studies on TwoHelichrysumSpecies of Greek Origin

“…italicum were identified and quantified. The major components were geraniol (35.59%), geranyl acetate (14.69%), and nerolidol (11.86%); On comparison with the oil obtained from H. italicum (12) grown in Yugoslavia, the oils of the two plants are found to be quite different. The main volatile components of subsp.…”

“…Helichrysum italicum has been studied in the past for its polar constituents (9, 10, ii); as far as we know there is only one report in the literature on the essentail oil chemistry of H. italicum (12) As a part of a systematic research on the chemical composition and biological properties of the essential oils of the Greek flora, we report in this study the essential oil compositions of H. amorginum and H. italicum. The aerial parts of the plants were submitted for 3 hours to steam distillation (16) and the obtained oils were dried over anhydrous sodium sulfate and stored at 4-6°C.…”

Chemical and Antibacterial Studies of twoHelichrysumSpecies of Greek Origin1

“…The only recent literature report on essential oil compositions come from the Mediterranean taxa of H. italicum (10) (11), and from the two Greek species H. italicum ssp. italicum and H. amorginum from which the latter is endemic (12).…”