Teanol, a new brominated sesquiterpene from the Thailand Laurencia mariannensis.

We examined the constitution of Laurencia mariannensis collected from the east coast of Tean Island, Thailand. The structure of a new brominated rearranged cyclolaurane-type sesquiterpene, named teanol (1), is reported. This is the first report on biology and chemistry of the Thailand red algal genus Laurencia (Rhodomelaceae, Ceramiales). Image 1 • The constitution of Laurencia mariannensis collected from Thailand was analyzed. • New brominated rearranged cyclolaurane-type sesquiterpene, teanol was isolated. • First report on biology and chemistry of the Thailand red algal genus Laurencia. [ABSTRACT FROM AUTHOR]