p. 1875 - 1880
(2007/10/02)2-ethoxymethylene-3-oxobutanoic acid ethyl ester
diethyl
ethyl 5-hydroxy-3-(5-methylisoxazol-4-yl)isoxazol-4-ylcarboxylate
5-methylisoxazole-4-carboxylic acid ethyl ester
5-methylisoxazole-4-carbonyl chloride