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A series of indirubin derivatives hydrochloride were obtained using a convenient and mild method from indirubin. The newly synthesized compounds and their derivatives were characterized by 1H NMR, 13C NMR, and MS. Furthermore, we tested their IDO1 enzyme inhibitory activity and anti‐proliferative activities in K562 tumor cells. The experimental results revealed that some of the compounds showed potential...
As an industrial byproduct of oil refining, furfural extract oil from reduced-pressure route II with high aromatic content was used to prepare heat-resistant condensed polynuclear aromatic (COPNA) resin for the first time. The basic properties of furfural extract oil and the resultant COPNA resin were characterized by infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (1H-NMR),...
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