Rugulosin, (1S,1'S,2R,2'R,3S,3'S,9ar,9'ar)-

(-)-Rugulosin is the less common optical isomer of mycotoxin, shown to be antiviral.

(-)-Rugulosin is the less common optical isomer of the mycotoxin, (+)-rugulosin, which was first isolated from Myrothecium verrucaria in 1968. The isomers appear not to be co-produced but both occur widely in several fungal genera. (-)-Rugulosin has been shown to be antiviral. (-)Rugulosin is the less studied of the isomers and its role as a mycotoxin is implied rather than established. There are few comparative studies of the relative potency of the isomers.

ChEBI: Rugulosin is a cyclic ketone and an organic polycyclic compound.