Antileishmanial epidioxysterols from the Colombian marine sponge Ircinia campana are oxidation products from naturally occurring 5,7 sterols

ABSTRACT: Marine sponges of the genus Ircinia are known to contain several classes of metabolites, some of them with interesting biological activities as furanesesterterpenes, polyprenylated hydroquinones, macrolides, sulfur containing terpenoids, and steroids with various patterns of oxidation. In...