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. 2017 Mar 31;7:45701. doi: 10.1038/srep45701

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(A) Scope of the three-component synthesis of pyrano[2,3-c]pyrazoles 5a–t. (B) Three-component synthesis of 6-amino-3-methyl-4-phenyl-4,7-dihydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile 7.