“…Previous phytochemical investigations of the plant have described the isolation of an alkaloid named spiganthine (Hegnauer, 1966) and isoquinoline, actinidine, choline and acylated cholines and flavonoids (Wagner et al, 1986). Other minor constituents, chemically related to the alkaloids rianodine and spiganthine, were isolated and evaluated for their activity on the papillary cardiac muscle of guinea-pigs, inducing delay of the latency to contraction qualitatively similar to that obtained with ryanodine and spinganthine, but with different potencies (Hübner et al, 2001).…”