Sanguinaria canadensis structure

A specific aspect of the chemistry of QBA deals with dimeric derivatives possesshig two djhydrobenzophenanthridine moieties coimected by a bridge involving carbon-carbon bonds. In 1970, Tin-Wa and co-workers isolated a new alkaloid from Sanguinaria canadensis with a molecular mass of 720 [22]. Later, they estabUsbed its structure as optically active l,3-bis(dihydrosangumarinyl)acetone (31), called (+)-sanguidimerine [23]. 

Figure 7. General structural types of Sanguinaria Canadensis alkaloids...

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