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. 2023 Jan 28;135:106390. doi: 10.1016/j.bioorg.2023.106390

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Fig. 3 — Green one-pot three-component regioselective synthesis of 5-aroyl(or heteroaroyl)-6-(alkylamino)-1,3-dimethylfuro[2,3-d]pyrimidine-2,4(1H,3H)-diones catalyzed by ZrOCl₂•8H₂O. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)