反应详情

According to the same manner as that of Example a-1 except that 1.00 g of 3-[(2-methoxyethoxy)carbonylamino]benzaldehyde was used in place of 3-[(methoxycarbonyl)methoxy]benzaldehyde, 0.742 g of 3-acetyl-4-hydroxy-1,6-dimethyl-2(1H)-pyridinone was used in place of 3-acetyl-4-hydroxy-6-methyl-2(1H)-pyridinone, and 20 ml of ethanol was used in place of pyridine, 0.96 g of 4-hydroxy-3-[3-[3-[(2-methoxyethoxy)carbonylamino]phenyl]-1-oxo-2-propenyl]-1,6-dimethyl-2(1H)-pyridinone [Compound No. (42a)] was obtained as a yellow crystal.