Progress on the chemistry of dibenzocyclooctadiene lignans.

Potential antimalarial candidates from African plants: An in vitro approach using Plasmodium falciparum☆

Biaryls in nature: a multi-facetted class of stereochemically, biosynthetically, and pharmacologically intriguing secondary metabolites.

Phenolic constituents from Mikania micrantha

Konyanin: a new lignan from hapuophyllum vulcaniclm

The aerial parts of HAPLOPHYLLUM TUBERCULATUM collected in Sudan have yielded the furoquinoline alkaloid skimmianine, the lignan justicidin-A, and 5,7,4′-trihydroxy-6-methoxy-3-O-glucosyl flavone. Skimmianine was identified by direct comparison with authentic material; justicidin-A by analysis of spectral data and by examination of lanthanide induced shifts in the PMR spectrum; and 5,7,4′-trihydroxy-6-methoxy-3-O-glucosyl flavone by spectral analysis of the original isolate and of its hydrolysis product.

P. G. Waterman

Papers

Alkaloid, lignan and flavonoid constituents of Haplophyllum tuberculatum from Sudan.