Two Novel Dicarboxylic Acid Derivatives and a New Dimeric Hydrolyzable Tannin from Walnuts
作者:Hideyuki Ito、Takahiro Okuda、Toshiyuki Fukuda、Tsutomu Hatano、Takashi Yoshida
DOI:10.1021/jf062872b
日期:2007.2.1
In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical
除了以前报道的16种多酚外,还包括3种新的鞣花单宁,2种新的二羧酸衍生物,甘精蛋白A(1)和B(2)以及一种新的二聚体可水解单宁,甘精D(3),以及15种已知的多酚。核桃,胡桃种子的核桃仁中的化合物。在1D-NMR和2D-NMR分析和化学数据的基础上阐明了新化合物的结构。还通过类SOD和DPPH自由基清除活性评估了这些分离物的抗氧化作用。