The cardiac effects of asclepin, a new glycoside from the plant Asclepias curassavica, were studies in vitro (isolated atrium and heart of guineapig) and in vivo (anaesthetized cat) and were compared with g-strophanthin, digoxin, digitoxin, or digitoxigenin, resp. Asclepin showed a marked positive
A new cardenolide, 12beta,14beta-dihydroxy-3beta,19-epoxy-3alpha-methoxy-5alpha-card-20(22)-enolide (6), and a new doubly linked cardenolide glycoside, 12beta-hydroxycalotropin (13), together with eleven known compounds, coroglaucigenin (1), 12beta-hydroxycoroglaucigenin (2), calotropagenin (3),