New coumarin derivatives, processes for the preparation thereof and their use
申请人:PLIVA farmaceutska, kemijska, prehrambena i kozmeticka industrija, dionicko drustvo
公开号:EP0816353B1
公开(公告)日:2001-12-19
Syntheses of some new coumarin-quinolone carboxylic acids
作者:Mladen Trkovnik、Zrinka Ivezić
DOI:10.1002/jhet.5570370123
日期:2000.1
ethoxymethylenemalonate to give intermediates 11-18. Thermal cyclizations of intermediates give benzopyranopyridinecarboxylates 19-26. These esters were hydrolyzed to the corresponding benzopyranopyridine carboxylic acids 27-34.