[Synthesis of derivatives of xanthene-2-carboxylic acid and xanthone-2-carboxylic acid].
D000818:Animals; D001249:Asthma / Q000188:drug therapy; D006634:Histamine H1 Antagonists / Q000138:chemical synthesis*; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects; D051381:Rats; D014966:Xanthenes / Q000138:chemical synthesis*
D006634:Histamine H1 Antagonists; D014966:Xanthenes