Structure of Bisosthenon, a Novel Dimeric Coumarin from Citrus Plants

抄録

Bisosthenon (1), a new dimeric coumarin, was isolated from the roots of some Citrus plants (Rutaceae), and the structure was elucidated to be 1, correspoding to a head-to-head dimer of osthenon (4), which was previously obtained from Citrus plants. The photodimerization of 4 gave 1 as well as two other dimeric products, 2 and 3.