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Method for preparation of (7-phenoxy-4-hydroxy-1-methyl-isoquinoline-3-carbonyl)-glycine (roxedustat) and its intermediates based on simultaneous opening of oxazolic ring, fission of ether and creation of imine
Indium-mediated reduction of β-aminovinyl chloro-difluoromethylated ketones in the presence of heteroaryl aldehydes: A mild entry to novel difluoromethylene enaminone derivatives