New anti-malarial phenylpropanoid conjugated iridoids from Morinda morindoides.

A new phenylpropanoid conjugated iridoid together with four known congeners was isolated from Morinda morindoides, used for the therapy of malaria traditionally in some African countries, as anti-malarial principles through bioassay-guided separation. Furthermore, their absolute stereostructures were unambiguously established by a combination of modified Mosher's method and chemical correlation.

Artoindonesianin C, a new xanthone derivative from Artocarpus teysmanii.

A new xanthone derivative, artoindonesianin C (1), was isolated from Artocarpus teysmanii, together with two known prenylated flavonoids, cycloartobiloxanthone and artonin J. The structure of artoindonesianin C (1) was determined on the basis of MS and NMR evidence and by comparison with known related compounds.