NOVEL ERGOLINE ANALOGS

Provided herein are substituted indolo[4,3-fg]quinolines of Formula (I) and (II) where R1-R6 and R13 are as defined in the specification and pharmaceutical compositions thereof which are useful in treating, preventing, or ameliorating a variety of medical disorders such as, for example, migraine. In other embodiments, provided herein are methods of agonizing receptors such as, for example, the 5-HT1D and or 5-HT1B receptor using the compounds and compositions disclosed herein. In still other embodiments, provided herein are methods of antagonizing or inhibiting activity at receptors such as, for example, the 5-HT2B receptor using the compounds and compositions disclosed herein. In still other embodiments, provided herein are methods of regulating serotonin transport using the compounds and compositions disclosed herein.