Bioassay-guided fractionation of an EtOAc extract of the leaves of Rosa laevigata afforded two new 19-oxo-18,19-seco-ursane-type triterpenes (1 and 3), a new ursane-type nortriterpene (2), a new ...

Two new taxoids, taxumairol Q (1) and 13-O-acetyl wallifoliol (2), have been isolated from the leaves and twigs of Taxus sumatrana. Taxuspine F and wallifoliol (10) have been isolated for the first ...

ZHI-MIN LI and HUI-SHEN SHEN; ZHI-MIN LI. School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China. Search for more papers by this author and ...