Natural products are becoming increasingly important in chemoprevention and for cancer therapy. Silene viscidula (S. viscidula), a traditional Chinese herb, has long been used as an anti-inflammatory and neuroleptic agent. However, the anticancer activity of S. viscidula has remained unclear. In
The chemical investigation of Cucubalus baccifer L. afforded three new norsesquiterpenoids, cucubalol, cucubalactone and drummondol-11-O-beta-D-glucopyranoside together with two known related compounds, drummondol and 5,7[E]-megastigmadiene-3 beta,4 alpha,9 xi-triol. Their structures were