Patent ID: 8338624

Claim:
An isoflavone derivative of formula I: wherein R 1 is H or R 7 —CON(R 8 )—R 9 —N(R 8 )—B; R 2 is H, (C 1 -C 6 ) alkyl, R 9 —COOR 10 , glucosyl, or R 7 —CON(R 8 )—R 9 —N(R 8 )—B; R 3 is H or R 7 —COOR 10 ; R 4 is H, OH, —OR 9 -COR 10 or R 7 —COOR 10 ; R 5 is H, (C 1 -C 6 ) alkyl or R 7 —COOR 10 R 6 is H or R 7 —COOR 10 ; R 7 is (C 1 -C 20 ) alkylene, —O—(C 1 -C 20 ) alkylene or (C 2 -C 20 ) alkenylene; R 8 is H or (C 1 -C 3 ) alkyl; R 9 is (C 1 -C 20 ) alkylene or (C 2 -C 20 ) alkenylene; R 10 is H or R 7 —CON(R 8 )—R 9 —N(R 8 )—B; B is an amino-protecting group; provided that at least one of R 1 and R 2 is R 7 —CON(R 8 )—R 9 —N(R 8 )—B; and a pharmaceutically acceptable salt or hydrate thereof.