Patent ID: 8895497

Claim:
A compound of formula (I): wherein R 1 is H, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, heteroaryl, OR a , SR a , NR a R b , N(R a )C(O)R b , N(R a )C(O)OR b , C(O)R a , COOR a , OC(O)R a , C(S)R a , C(O)NR a R b , C(S)NR a R b , N(R a )C(S)R b , or N(R a )N(R b )C(O)R c , in which each of R a , R b , and R c , independently, is H, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, or heteroaryl, or R a and R b together with the nitrogen atom or nitrogen atoms to which they are attached form heterocycloalkyl, heterocycloalkenyl, or heteroaryl; each of R 2 and R 3 , independently, is H, cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, heteroaryl, or alkyl optionally substituted with cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, or heteroaryl; and each of R 4 and R 5 , independently, is H, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, or heteroaryl, or R 4 and R 5 together with the nitrogen atom to which they are attached form heterocycloalkyl, heterocycloalkenyl, or heteroaryl.