Aeridin, a Phenanthropyran derivative from Wattakaka volubilis l. f.

A phenanthropyran derivative 2, 7 – dihydroxy -l, 3 -dimethoxy – 9, 10dihydrophenanthropyran was isolated from the whole plant of Wattakaka volubilis L. f. The isolation of Aeridin (2, 7 – dihydroxy -l, 3 -dimethoxy – 9, 10-dihydrophenanthropyran) was carried out by column chromatography and reversed phase HPLC and structure was elucidated by 1D and 2D NMR analyses.