Batrachotoxins and derivatives
Description:
Potent cardiotoxic and neurotoxic alkaloids containing a C21-steroid backbone. They have been characterized from skin extracts of different frog species. The batrachotoxins have a homomorpholine ring at the steroidal CD-ring junction, a 3,9-hemiketal bridge and, in some cases, a 20beta-2,4-dialkylpyrrole-3-carboxylate moiety.