Teurilene and thyrsiferyl 23-acetate, meso and remarkably cytotoxic compounds from the marine red alga Laurencia obtusa (Hudson) Lamouroux

Article abstract of DOI:10.1016/S0040-4039(00)94885-8

Two new cyclic ethers consisting of a squalene carbon skeleton have been isolated from the red alga L. obtusa. The absolute stereostructure of teurilene was elucidated by the X-ray crystallographic method, and the structure of thyrsiferyl 23-acetate was established from spectral and chemical evidence.