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(2007/10/02)4-ethoxymethylene-2-phenyl-2-oxazolin-5-one
ethyl 3-oxo-4-(triphenylphosphoranylidene)butanoate
4-chloromethylene-2-phenyl-4H-oxazol-5-one
5-Benzoylamino-2-((E)-2-furan-2-yl-vinyl)-6-oxo-6H-pyran-3-carboxylic acid ethyl ester
Ethyl 3-benzoylamino-6-<2-(4,5-dihydro-5-oxo-2-phenyl-4-oxazolylidene)-1-(triphenylphosphoranylidene)ethyl>-2-oxo-2H-pyran-5-carboxylate
5-Benzoylamino-6-oxo-2-((E)-pent-1-enyl)-6H-pyran-3-carboxylic acid ethyl ester
5-Benzoylamino-6-oxo-2-[(3-trifluoromethyl-phenylcarbamoyl)-(triphenyl-λ5-phosphanylidene)-methyl]-6H-pyran-3-carboxylic acid ethyl ester
(E)-2-Benzoylamino-4-[6,7-dimethoxy-3,4-dihydro-1H-quinolin-(2E)-ylidene]-pent-2-enedioic acid 5-ethyl ester