Journal of Natural Products 1998-Dec
New sesquiterpenes from Crossopetalum tonduzii.
Numai utilizatorii înregistrați pot traduce articole
Log In / Înregistrare
Linkul este salvat în clipboard
Cuvinte cheie
Abstract
Five new sesquiterpenes (1-5) with a dihydro-beta-agarofuran skeleton were isolated from Crossopetalum tonduzii. Their structures were elucidated by means of 1H and 13C NMR spectroscopic studies, including homonuclear and heteronuclear correlation experiments (COSY, ROESY, HMQC, and HMBC). The absolute configurations of 1 and 2 were determined by CD studies and chemical correlation. Compounds 1-3 were assayed against Spodoptera littoralis in an election test and showed low insect-antifeedant activity.