Isovoacangine

Isovoacangine is a naturally occurring substance that has action on heart muscles in pigs.

Derivatives
3-Hydroxyisovoacangine and 3-(2'-oxopropyl)isovoacangine are derivates of isovoacangine.

Natural occurrence
It occurs naturally in many Tabernaemontana (milkwood) species such as Tabernaemontana pachysiphon and Tabernaemontana divaricata.