Figure 1.
Structure of 4 cardiotonic steroids: cardenolides (ouabain and digoxin) having 5-membering lactone ring in 17-th position of steroid core; bufadienolides (marinobafagenin and bufalin) with 6-membering lactone ring in this position.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.