Cruentaren is a macrolide secreted by the myxobacteria Byssovorax cruenta .
Two isomers (A and B) have been isolated with a molecular formula of C33H51 NO8 and molecular weight 589. Cruentaren A strongly inhibits the growth of yeasts and filamentous fungi, and inhibits the proliferation of different cancer cell lines including a multidrug-resistant KB line. Cruentaren B shows only marginal cytotoxicity and no antifungal activity.
References
Cruentaren Wikipedia(Text) CC BY-SA