Patent ID: 8617827

Claim:
Photoactivable rhodamine or carbopyronine derivative compounds of the following general formulae G1-G4 comprising UV light absorbing chromophores which are adapted to eliminate nitrogen or nitrogen(I) oxide and generate fluorescent rhodamine or carbopyronine dyes when subjected to photolysis by irradiation at 254-490 nm G1: A1=O, A2=N, A3=C; G2: A1=S, A2=N, A3=C; G3: A1=O, A2=O, A3=N; G4: A1=S, A2=O, A3=N; wherein R 1 , R 2 , (R 1 -R 2 ), R 3 , R 4 , (R 3 -R 4 ), R 5 , R 6 , (R 5 -R 6 ), R 7 , R 8 , (R 7 -R 8 )=H, unsubstituted or substituted alkyl (cycloalkyl), unsubstituted or substituted cycloalkenyl, unsubstituted or substituted heterocylic residue, unsubstituted or substituted aryl, unsubstituted or substituted hetaryl; and X=O, S, C(CH 3 ) 2 ; a chemical bond between C-2 and C-3 is a single or cis-double bond; alternatively, C-2 and C-3 is a part of any cyclic system; and at least one of the substituents Q and L is independently defined as follows (n=0, 1, 2, 3 or 4): H, COOR 9 , COCHâ•Nâ•N, CH 2 COOR 9 , N(R 1 . . . R 2 ), NR 10 R 11 , SR 12 , F, Cl; wherein R 9 =H, unsubstituted or substituted alkyl, cycloalkyl, or heterocyclic residue, N-succinimidyl, N-sulfosuccinimidyl, unsubstituted or substituted phenyl, aryl or hetaryl; R 10 , R 11 =Câ•S, Câ•O; R 12 =H, (CH 2 ) m COOR 9 wherein m is an integer from 1 to 11, unsubstituted or substituted alkyl, cycloalkyl, heterocyclic residue, aryl or hetaryl.