Abstract
Two isocoumarin derivatives, one new, erythricin (1) and a known erythrocentaurin (2) were isolated from the whole plant of Centaurium pulchellum Druce. The 13C-NMR data of compound 2 are described. The structures of compounds 1, 2 were elucidated on the basis of spectral analysis including 2D-NMR experiments. Antibacterial and brine shrimp lethality assays are also described on the fractions of the plant extract.
Acknowledgement
We are grateful to Professor Dr M. Iqbal Choudhry, Acting Director, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi, for spectral analysis.