Abstract: There is provided a compound of Formula (I): or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition of wherein the various substituents are defined herein,

Abstract: Provided herein is A compound of Formula I: or a pharmaceutically acceptable salt thereof, wherein the various substituents are described herein.

Abstract: This disclosure relates to an electrophotographic copying process suitable for use in a multiple copying system. The process is characterized by use of an electrophotographic medium comprising photosensitive organic compounds which are either (1) insulating prior to irradiation and substantially permanently conductive subsequent to irradiation or (2) conductive prior to irradiation and substantially permanently insulating subsequent to irradiation. The process comprises the steps of exposing the electrophotographic medium to a pattern of activating radiation to produce a latent image with a conductivity pattern that is irreversible and permanently altered and externally applying an electrical charge at any suitable time thereby forming an electrostatic pattern which can be developed by any of the known electrophotographic developing techniques.