aGraduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
bWestern Australian Museum, Perth, WA 6000, Australia
Abstract:
Six new cytotoxic bis-3-alkylpyridine alkaloids with an azoxy moiety, pyrinadines B–G (1–6), have been isolated from an Okinawan marine sponge Cribrochalina sp., and the structures were elucidated by spectroscopic data and chemical means.