This work was financially supported by the National Natural Foundation of China (no. 30670213) and Key Scientific Program of China Three Gorges University (no. 2005ZD007). The plant material was ident
Two new aristolane sesquiterpenes, namely, aristolan-10-ol-9-one and aristolan-8-en-1-one, were isolated from the red alga Laurencia similis. Their structures w