Fujita, Reiko Cycloadditions of 1-substituted 1,3-butadienes with 4- or 3-substituted 2(1H)-quinolones acting as dienophiles. [electronic resource] - Chemical & pharmaceutical bulletin Mar 2003 - 295-300 p. digital Publication Type: Journal Article ISSN: 0009-2363 Standard No.: 10.1248/cpb.51.295 doi Subjects--Topical Terms: Butadienes--chemistryCyclizationMolecular ConformationQuinolones--chemistry