p. 385 - 390
(2015/10/29)p. 630 - 632
(2008/09/19)p. 41 - 49
(2007/10/03)p. 2571 - 2582
(2007/10/02)diethyl 4-ethyl-1,2,6-trimethyl-1,4-dihydropyridine-3,5-dicarboxylate
2-acetyl-pent-2-enoic acid ethyl ester
3-Methylbutenoic acid
trans-2-pentenoic acid
ethyl acetoacetate