上游原料
(2-bromo-4,5-diethoxyphenyl)(methoxy)methyl methyl ether; 1-bromo-2-(dimethoxymethyl)-4,5-diethoxybenzene4-Pyridinecarboxaldehyde; isonicotinaldehyde[6-(dimethoxymethyl)-3,4-diethoxy-2,4-cyclohexadien-1-yl](4-pyridinyl)methanol6-ethoxy-1-(4-pyridinyl)-2-benzofuran-5-yl ethyl ether; 4-(5,6-diethoxy-2-benzofuran-1-yl)pyridinedimethyl (Z)-2-butenedioate; Dimethyl Maleatedimethyl 4,5-diethoxy-1-(4-pyridinyl)-11-oxatricyclo[6.2.1.0(2,7)]undeca-2,4,6-triene-9,10-dicarboxylatedimethyl 6,7-diethoxy-1-(4-pyridinyl)-2,3-naphthalenedicarboxylate4-[6,7-diethoxy-2,3-bis(methoxycarbonyl)-1-naphthyl]-1-pyridiniumolatedimethyl 6,7-diethoxy-1-(2-oxo-1,2-dihydro-4-pyridinyl)-2,3-naphthalenedicarboxylate1-Chloro-2-methoxyethane; 2-Chloroethyl methyl etherdimethyl 6,7-diethoxy-1-[1-(2-methoxyethyl)-2-oxo-1,2-dihydro-4-pyridinyl]-2,3-naphthalenedicarboxylatedimethyl 6,7-diethoxy-1-(2-oxo-1,2-dihydro-4-pyridinyl)-2,3-naphthalenedicarboxylatedimethyl 6,7-diethoxy-1-[1-(2-methoxyethyl)-2-oxo-1,2-dihydro-4-pyridinyl]-2,3-naphthalenedicarboxylate1-iodo-2-methoxyethane; 2-iodoethyl methyl ether
