Absolute configuration of the lignan oleiferins from Virola oleifera
作者:Anna Maria A.P. Fernandes、Lauro E.S. Barata、Pedro H. Ferri
DOI:10.1016/s0031-9422(00)97110-3
日期:1994.5
The assignment of the absolute configuration for the lignan-7-ols, (7R,8S,8'R)-oleiferins A-C, was established by acid catalysed Friedel-Crafts-type cyclization for the known 2,7'-cyclolignans and chemical analyses.
Chemistry of saururus cernuus IV: cyclooctadiene systems derived from austrobailignan-5
作者:Sunil K. Chattopadhyay、Koppaka V. Rao
DOI:10.1016/s0040-4020(01)90001-8
日期:——
neolignan from was converted to a dibenzocyclooctadiene derivative by using two new reagents. The compound was further functionalized by the use of DDQ to mono- and dialcohols. Acid treatment of the monoalcohols led to oxidative demethylenation. The diols were converted to an epoxide and other rearranged products. The stereochemistry of the mono- and dialcohols was established based on nmr and cd spectral