Flavone analogues useful as anti-rejection agents

摘要

Flavone analogues of formula wherein; X is O or S; R1 is C1-C6 alkyl or C2-C6 alkenyl; R2 is H, C1-C6 alkyl or R2O is a sugar residue; R3 is H, C1-C6 alkyl or R3O is a sugar residue; R4 is H, OH, or a sugar residue; R5 is H, C1-C6 alkyl, or R5O is a sugar residue; m is an integer of 1 or 2; and n is an integer from 0 to 5, are useful as anti-rejection agents in organ transplants.