Patent ID: 8637485

Claim:
A compound represented by the formula; pharmaceutically acceptable salt thereof; and solvate thereof; wherein each of R 1 and R 2 individually is selected from the group consisting of H and alkyl; R 4 is selected from the group consisting of NR 7 R 8 ; each of R 7 and R 8 individually is selected from the group consisting of alkyl, (CH 2 ) n NR 1 R 2 , (CH 2 ) n CONR 1 R 2 and (CH 2 ) n C═ONR 1 R 2 ; wherein n is a whole number integer from 1 to 8; each of R 5 and R 6 individually is selected from the group consisting of H and acyl; and wherein R 3 is alkyl.