Answers are grounded in this paper and cite their sources.
From the toad venom Ch'an Su digitoxigenin (I), periplogenin (IX), and sarmentogenin (XI) were isolated as well as the two new 14, 15 β‐epoxy‐cardenolides III and VI which — regarding their steroid nucleus — are corresponding to cinobufotalin and marinobufagin, respectively.
No takes yet. Share an insight, caveat, or question.
Höriger et al. (1970) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: