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Two Schiff's bases of racemic gossypol with amino derivatives of crown ethers were synthesised and studied by FT-IR and 1 H NMR spectroscopy, while their structures were calculated by the PM5 semiempirical method. These studied Schiff's bases exist in the solid state and in solutions as enamine forms. In the solid state the interactions between OH groups in the 6, 6' positions and oxygen atoms...
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