A further aporphine type alkaloid obtained from the callus tissue of Stephania
cepharantha, this alkaloid is the dimethoxy analogue of the preceding base. It also
forms orange needles and gives a bright orange fluorescence. The ultraviolet
spectrum in EtOH has absorption maxima at 213, 244, 303, 315 and 440 nm with
a shoulder at 273 nm.
ChEBI: Cepharadione B is an isoquinoline alkaloid. It is functionally related to an aporphine.
Akasu, Itokawa, Fujita, Tetrahedron Lett., 3609 (1974)