Cepharadione B

BeschreibungA 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.