Santos L C, Piacente S, De Riccardis F, Eletto A M, Pizza C, Vilegas W
Universidade Estadual Paulista, Instituto de Química de Araraquara, SP, Brazil.
Phytochemistry. 2001 Apr;56(8):853-6. doi: 10.1016/s0031-9422(00)00480-5.
8-Carboxymethyl-1,6-dihydroxy-3,5-dimethoxyxanthone, 8-carboxymethyl-1,5,6-trihydroxy-3-methoxyxanthone and 8-carboxymethyl-1,3,5,6-tetrahydroxyxanthone were isolated from the capitula of Leiothrix curvifolia and Leiothrix flavescens and characterized by spectroscopic methods, mainly 1D and 2D NMR experiments, as well as by electrospray mass spectrometry. Eight known flavonoids were also isolated and they were identified by 1D and 2D NMR experiments and comparison with literature data.
从曲茎腺毛草和淡黄腺毛草的头状花序中分离出了8-羧甲基-1,6-二羟基-3,5-二甲氧基呫吨酮、8-羧甲基-1,5,6-三羟基-3-甲氧基呫吨酮和8-羧甲基-1,3,5,6-四羟基呫吨酮，并通过光谱方法（主要是一维和二维核磁共振实验）以及电喷雾质谱对其进行了表征。还分离出了8种已知的黄酮类化合物，并通过一维和二维核磁共振实验以及与文献数据对比对其进行了鉴定。
