p. 2316
(1956)p. 275 - 277
(2007/10/02)diazomethane
4-ethyl 3-methyl rel-(3R,4S,5S)-2-oxo-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran-3,4-dicarboxylate
ethyl (E)-3-(3,4,5-trimethoxyphenyl)acrylate
3,4-(methylenedioxy)benzoyl chloride
4-ethyl 3-methyl rel-(3R,4S,5S)-2-oxo-3-piperonyloyl-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran-3,4-dicarboxylate