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Figure 1 Schematic represenation of heterolignan: X = O, N, S; Q1-4 = C or heteroatom; Ar - Ar' = benzene or heterocycle. |
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Figure 1 Schematic represenation of heterolignan: X = O, N, S; Q1-4 = C or heteroatom; Ar - Ar' = benzene or heterocycle. |