Two new pyrrolidine alkaloids from the red alga .

Two new pyrrolidine alkaloids, acanthophoraines B () and C (), together with five known ones (-) were isolated from the red alga . Their structures were elucidated by extensive spectroscopic methods and single-crystal X-ray diffraction analysis. The absolute configuration of was established by ECD calculation.

A new thiodiketopiperzaine from the marine sponge sp.

A new thiodiketopiperzaine, tedanizaine A (), together with six known ones, were isolated from the marine sponge sp. Their structures were determined by spectroscopic analyses. The absolute configuration of was established by ECD calculation.