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Apoptosis is one of the most critical forms of defense against cancer, and the induction of apoptosis by dietary polyphenols represents significant potential for cancer preventive activity. The present study examined polyphenols extracted from selected native Australian fruits--Illawarra plum
S(R)()-Podolactone D (1), a new norditerpene dilactone having a methylsulfoxide moiety, was isolated from the leaves of Podocarpus macrophyllus D. Don var. maki Endl. along with known podolactone D (2, S(S)()-podolactone D). The structures and absolute configurations of compounds 1 and 2 were
Fourteen new bisnor- and norditerpene dilactones, makilactones E-R, having a 7alpha : 8alpha-epoxy-9,11-enolide substructure, were isolated from a methanolic extract of the root and the bark of Podocarpus macrophyllus D. DON (Podocarpaceae) with thirteen known bisnor- and norditerpenoids, and the