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Bufadienolide

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Bufadienolide Bufadienolide Lexikon der Biologie Spektrum der Wissenschaft

Bufadienolide is a chemical compound with steroid structure. Its derivatives are collectively known as bufadienolides, including many in the form of bufadienolide glycosides (bufadienolides that contain structural groups derived from sugars). These are a type of cardiac glycoside, the other being the cardenolide glycosides. Both bufadienolides and their glycosides are toxic; specifically, they can cause an atrioventricular block, bradycardia (slow heartbeat), ventricular tachycardia (a type of rapid heartbeat), and possibly lethal cardiac arrest.

Contents

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Etymology

Bufadienolide steroids

The term derives from the toad genus Bufo that contains bufadienolide glycosides, the suffix -adien- that refers to the two double bonds in the lactone ring, and the ending -olide that denotes the lactone structure. Consequently, related structures with only one double bond are called bufenolides, and the saturated equivalent is bufanolide.

Classification

According to MeSH, bufadienolides and bufanolides are classified as follows:

  • Polycyclic compounds
  • Steroids
  • Cardanolides
  • Cardiac glycosides
  • Bufanolides (includes bufenolides, bufadienolides, bufatrienolides)
  • Proscillaridin
  • Daigremontianin
  • Cardenolides
  • References

    Bufadienolide Wikipedia


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