Heterocyclic compounds

摘要

Organic compounds having the structural formula I are provided where the variables have the values described herein and R¹ and R² join together to form a 6 membered substituted or unsubstituted ring including at least one O, N, or S atom, and Z is an O, S, NH or NR group. Pharmaceutical formulations include the organic compound or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable carrier.