Formation of fluorescent products in the reaction of butyraldehyde and methylamine as a model of the reaction of oxidized lipids and proteins.
作者:Kiyomi KIKUGAWA、Tetsuta KATO、Atsushi IWATA、Akira HAYASAKA
DOI:10.1248/cpb.37.3061
日期:——
Formation of fluorescent compounds in the reaction of butyraldehyde and methylamine at pH 7 and 37°C was investigated as a model of the reaction of xidized lipids and proteins. The reation mixture was treated with borohydride for isolation of the products. Some fluorescent products remained unchanged and the other changed into other fluorescent compounds. One of the fluorescent compounds produced on borohydride treatment was identified as 2, 4-diethyl-2, 5-dihydrofuran, which exhibited fluorescence with an excitation maximum at 345nm and an emission maximum at 406nm. The product may be derived by the condensation of 2 molecules of butyraldehyde in the presence of methylamine. Non-fluorescent products composed of 2 : 1, 3 : 1 and 4 : 1 ratios of butyraldehyde and mehylamine were isolated. The fluorescent products may include self-condensation products of butyraldehyde formed in the presence of methylamine.
在 pH 7 和 37°C 下,丁醛与甲胺反应生成荧光化合物的形成被研究作为氧化脂质与蛋白质反应的模型。反应混合物经过氢化铵处理以分离产物。一些荧光产物保持不变,而另一些则转变为其他荧光化合物。在氢化铵处理后生成的荧光化合物之一被鉴定为 2, 4-二乙基-2, 5-二氢呋喃,它在 345nm 的激发最大值和 406nm 的发射最大值处表现出荧光。该产物可能是通过在甲胺存在下,两个丁醛分子的缩合反应生成的。分离出的非荧光产物包括 2:1、3:1 和 4:1 比例的丁醛与甲胺的组合。荧光产物可能包括在甲胺存在下形成的丁醛的自缩合产物。