Provided herein are compounds useful for the preparation of compounds that have retinoid-like biological activity. Also provided herein are processes for the preparation of compounds that have retinoid-like biological activity.

The invention relates to compounds of Formula (I) and methods for their preparation. Also described are pharmaceutical compositions comprising a compound of Formula (I) and their use in the treatment or prevention of conditions associated with mitochondrial dysfunction. Formula (I) ##STR00001##

The invention relates to compounds of Formula (I) and methods for their preparation. Also described are pharmaceutical compositions comprising a compound of Formula (I) and their use in the treatment or prevention of conditions associated with mitochondrial dysfunction. Formula (I) ##STR00001##

Provided herein are compounds useful for the preparation of compounds that have retinoid-like biological activity. Also provided herein are processes for the preparation of compounds that have retinoid-like biological activity.

Provided herein are compounds useful for the preparation of compounds that have retinoid-like biological activity. Also provided herein are processes for the preparation of compounds that have retinoid-like biological activity.

A charge transport molecule contains four radical polymerizable functional groups of the general structure exemplified below: ##STR00001##
where R.sub.1 and R.sub.2 contain a spacer group and a radical polymerizable functional group, R.sub.3 and R.sub.4 are hydrogen atoms, and R.sub.5 and R.sub.6 contain a spacer group and a radical polymerizable functional group wherein the spacer group of R.sub.1, R.sub.2, R.sub.5 and R.sub.6 is an ethyl group and the radical polymerizable functional group of R.sub.1, R.sub.2, R.sub.5 and R.sub.6 is an acrylate group.

A charge transport molecule contains four radical polymerizable functional groups of the general structure exemplified below: ##STR00001##
where R.sub.1 and R.sub.2 contain a spacer group and a radical polymerizable functional group, R.sub.3 and R.sub.4 are hydrogen atoms, and R.sub.5 and R.sub.6 contain a spacer group and a radical polymerizable functional group wherein the spacer group of R.sub.1, R.sub.2, R.sub.5 and R.sub.6 is an ethyl group and the radical polymerizable functional group of R.sub.1, R.sub.2, R.sub.5 and R.sub.6 is an acrylate group.

An overcoat layer for an organic photoconductor drum includes a curable composition having about 20 to about 80 percent by weight of a charge transport molecule containing four radical polymerizable functional groups as exemplified below: ##STR00001##
where R.sub.1 and R.sub.2 contain a spacer group and a radical polymerizable functional group, R.sub.3 and R.sub.4 are hydrogen atoms, and R.sub.5 and R.sub.6 contain a spacer group and a radical polymerizable functional group. The curable composition may also include a non-radical polymerizable additive, such as a surfactant, and/or a curing agent.

Dehydroabietic acid derivatives according to Formula Ia or Formula Ib and all stereoisomers thereof, having a linker chain A of 1 to 10 atoms selected from carbon, nitrogen and oxygen to a group X capable of being negatively charged at a physiological pH and covalently attached to the linker chain A, selected from carboxyl, sulfate, sulfonate and phosphate groups. The Dehydroabietic acid derivatives are useful for therapeutic treatment of hyperexcitability diseases

Dehydroabietic acid derivatives according to Formula Ia or Formula Ib and all stereoisomers thereof, having a linker chain A of 1 to 10 atoms selected from carbon, nitrogen and oxygen to a group X capable of being negatively charged at a physiological pH and covalently attached to the linker chain A, selected from carboxyl, sulfate, sulfonate and phosphate groups. The Dehydroabietic acid derivatives are useful for therapeutic treatment of hyperexcitability diseases