Some fatty acids having an<i>O</i>-heterocycle in their terminal positions.<b>I</b>. ω-(3-Chromonyl)alkanoic acids
作者:Seiji Yamaguchi、Masao Mutoh、Masaaki Shimakura、Kunihiro Tsuzuki、Yoshiyuki Kawase
DOI:10.1002/jhet.5570280121
日期:1991.1
Some ω-(3-chromonyl)alkanoic acid derivatives, 1a and 2a, n = 4, 5; 3a, 4a and 5a, n = 2-6, were synthesized by cyclization of corresponding methyl ω-(2-hydroxybenzoyl)alkanoates 7b or ethyl ω-(2,4-dihydroxybenzoyl)alkanoates 8b with N,N-dimethylformamide-dimethyl acetal or acetic anhydride-DBU followed by hydrolysis.
一些ω-(3-苯甲酰基)链烷酸衍生物,1a和2a,n = 4、5; 通过将相应的ω-(2-羟基苯甲酰基)链烷酸甲酯7b或ω-(2,4-二羟基苯甲酰基)链烷酸乙酯8b与N,N-二甲基甲酰胺-二甲基乙缩醛环化合成3a,4a和5a,n = 2-6或乙酸酐-DBU,然后水解。