作者:Chen-Loung Chen、F.D. Hostettler
DOI:10.1016/s0040-4020(01)82854-4
日期:1969.1
Two new 2-naphthoic acid derivatives have been isolated from the aqueous extract of the heartwood of Ulmus thomasii Sarg. They have been shown to be 6-hydroxy-5,7-dimethoxy-2-naphthoic acid (I) and 6-hydroxy-3-hydroxymethyl-5,7-dimethoxy-2-naphthoic acid lactone (IV). The NMR spectra of several related naphthols and naphthoic acids and their derivatives have been examined. Acetylation of naphthol derivatives
从榆树心材心材的水提取物中分离出两种新的2-萘甲酸衍生物。已经显示它们是6-羟基-5,7-二甲氧基-2-萘甲酸(I)和6-羟基-3-羟基甲基-5,7-二甲氧基-2-萘甲酸内酯(IV)。已经检查了几种相关的萘酚和萘甲酸及其衍生物的NMR光谱。萘酚衍生物的乙酰化在其NMR光谱中产生萘质子邻位至OH基团的特征性低场移位。