Patent ID: 8148415

Claim:
A compound of Formula IV wherein A is selected from H, OH, halogen and straight or branched C 1 -C 10 hydrocarbon D, E and F are each independently of each other an optional linker group independently selected from C═O and hydrocarbon groups and a group of the formula wherein n is 1 to 6 and Y=Oxygen, Sulphur or CH 2 ; P, Q and R are independently of each other a ring system wherein one of P, Q and R is a ring system containing at least one carbon atom and one or more hetero atom and two of P, Q and R are independently selected from carbocylic ring systems substituted by one or more alkoxy groups, wherein R 4 and R 5 are independently selected from H, alkyl, cycloalkyl, alkenyl, acyl and aryl, or combinations thereof, or together represent alkylene, wherein each alkyl or cycloalkyl or alkenyl optionally contain one or more hetero atoms or groups.