Patent ID: 6956013

Claim:
A photo-activated pro-accord conjugate having the formula: wherein: a.) X is: i) —NR 7 —; ii) —NH—; iii) —S—; iv) —N(R 8 ) 2 — v) or mixtures thereof; wherein R 7 , and each R 8 is independently selected from C 1 -C 20 substituted or unsubstituted, linear or branched, cyclic or acyclic hydrocarbyl; C 3 -C 20 substituted or unsubstituted, cyclic or acyclic heterocarbyl; C 6 -C 20 substituted or unsubstituted alkaryl, aryl or aralkyl; or mixtures thereof; b.) R is a photo-labile unit modulating group; c.) R 1 is selected from: i) C 1 -C 20 substituted or unsubstituted, linear or branched, cyclic or acyclic hydrocarbyl; ii) C 3 -C 20 substituted or unsubstituted, cyclic or acyclic heterocarbyl; iii) or mixtures thereof; d.) R 2 is selected from: i) hydrogen; ii) R 1 ; wherein R 1 and R 2 are moieties when taken together with a carbonyl moiety comprise an aldehyde or a ketone having the formula: R 1 R 2 C═O which is capable of being released by said photo labile compound; and e.) R 3 is selected from: i) C 1 -C 20 substituted or unsubstituted, linear or branched, cyclic or acyclic hydrocarbyl; ii) C 3 -C 20 substituted or unsubstituted, cyclic or acyclic heterocarbyl; iii) hydrogen; iv.) or mixtures thereof; wherein when any 2 or more moieties selected from any non-hydrogen R 3 , R 7 or R 8 , combine, said moieties form a common ring; f.) R 4 is selected from: i) hydrogen; ii) halogen; iii) —OR′; iv) —N(R′) 2 ; v) —SR′; vi) nitrilo; vii) a carbonyl comprising unit having the formula: —(CH 2 ) x COR 6 wherein R 6 is hydrogen, —OR′, —N(R′) 2 , C 1 -C 20 substituted or unsubstituted, linear or branched, cyclic or acyclic hydrocarbyl, C 3 -C 20 substituted or unsubstituted, cyclic or acyclic heterocarbyl, or mixtures thereof; viii) C 1 -C 20 substituted or unsubstituted, linear or branched, cyclic or acyclic hydrocarbyl; ix) or mixtures thereof.