Patent ID: 7157477

Claim:
A composition comprising at least one of an amino-substituted demethoxylated hypocrellin derivative according to the following structures: wherein R 1 , R 2 , R 3 , R 4 are OCH 3 , NHCH 2 Ar, NHCH(CH 2 ) x , or NHCH(CH 2 ) n Ar, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is NHCH 2 Ar, NHCH(CH 2 ) x or NHCH(CH 2 ) n Ar, wherein Ar is a phenyl, naphthyl, pyridyl group, polycyclic aromatic group, or a heterocyclic moiety, and wherein —CH(CH 2 ) x is an alicyclic group, x=3, 4, 5, or 6 and n is 0–12.