[Synthesis of 7-substituted chrom-4-one-2-carboxylic acid derivatives].
D000368:Aged; D000818:Animals; D002867:Chromones / Q000138:chemical synthesis*; D006634:Histamine H1 Antagonists / Q000138:chemical synthesis* / Q000494:pharmacology; D006801:Humans
D002867:Chromones; D006634:Histamine H1 Antagonists