| marianins a and b, prenylated phenylpropanoids from mariannaea camptospora. | marianins a (1) and b (2), two new prenylated phenylpropanoids, were isolated from the culture extract of the fungus mariannaea camptospora. structures of marianins were elucidated by interpretation of nmr and other spectroscopic data. 1 is a 5-methylcoumarin bearing two prenyloxy groups, while 2 is an orcinol derivative substituted with a 3,3-dimethyl-4-pentenoyl chain. 2 is possibly derived from 1 through a claisen rearrangement of the prenyl group, followed by lactone hydrolysis and decarboxy ... | 2011 | 21488655 |