Patent ID: 7402673

Claim:
A compound of formula (I): wherein: each of R 1 , R 2 , R 3 , and R 4 is independently selected from hydrogen, hydroxy, amino, halo, —CH 2 OH and —NHCHO, or R 1 and R 2 taken together are selected from —NHC(═O)CH═CH—, —CH═CHC(═O)NH—, —NHC(═O)S—; and —SC(═O)NH—; R 5 is selected from hydrogen and —NR a R b , wherein R a and R b are each independently hydrogen or C 1-3 alkyl; n is an integer of from 2 to 6; m is an integer of from 0 to 5; and each of R 6 , R 7 , R 8 , R 9 , and R 10 is independently hydrogen or C 1-6 alkyl; provided that when m is 0, R 5 is hydrogen; or a pharmaceutically-acceptable salt or solvate or stereoisomer thereof.