Y. Takemura et al., CONSTITUENTS OF DOMESTIC CITRUS PLANTS .27. 2 NEW ACRIDONE ALKALOIDS FROM THE ROOTS OF MARSH GRAPEFRUIT, Heterocycles, 43(11), 1996, pp. 2483-2486
Two new acridone alkaloids, margrapine-(A) under bar and -(B) under ba
r were isolated from the roots of Marsh grapefruit (Citrus paradisi Ma
cf.). Their structures were characterized on the basis of spectroscopi
c evidence.