Any compound that inhibits the process of autophagy (the self-digestion of one or more components of a cell through the action of enzymes originating within the same cell).
An inhibitor of phosphatidylinositol 3-kinase, EC 2.7.1.137, a family of related enzymes capable of phosphorylating the 3 position hydroxy group of the inositol ring of a phosphatidylinositol.