| 摘要 |
Synthetic novel ellagic acid congeners of the formula: <IMAGE> I wherein: R1 is -H, -OH or -OR'; R2 is -H, -OH or -OR'; R3 is -H, -OH or -OR'; R4 is -H, -OH or -OR'; R5 is -H, -OH or -OR'; R6 is -H, -OH or -OR'; R' is lower alkyl having 1 to 8 carbon atoms or -CH2-Ar; Ar is phenyl or substituted phenyl, and at least one of R1, R2, R3, R4, R5 and R6 is other than -H. The above compounds and 6H-dibenzo[b,d]pyran-6-one are useful for inhibiting mutagenic activity in living cells.
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