Y. Takemura et al., STRUCTURE OF MARSHDIMERIN AND BISOSTHENON-B, 2 NEW BICOUMARINS FROM THE ROOTS OF MARSH GRAPEFRUIT, Heterocycles, 45(6), 1997, pp. 1169-1172
The structures of two dimeric coumarins named marshdimerin (1) and bis
osthenon-B (2) from the roots of Marsh grapefruit (Citrus paradisi Mac
f.) were elucidated on the basis of their spectral data.