Chintalwar Gajanan J, Chattopadhyay Subrata
Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
Nat Prod Res. 2006 Jan;20(1):53-6. doi: 10.1080/14786410500161924.
Reinvestigation of the plant, Swertia decussata resulted in the isolation of four antioxidant xanthones, which were characterized as 1-hydroxy-3,7,8-trimethoxy, 1,8-dihydroxy-3,7-dimethoxy, 1,7-dihydroxy-3,8-dimethoxy and 1,7,8-trihydroxy-3-methoxyxanthones. The structural ambiguity of the first compound was settled by ASIS-NMR and 2D NOESY spectroscopy.
对植物双叉獐牙菜进行重新研究，从中分离出了四种具有抗氧化作用的氧杂蒽酮，它们分别被鉴定为1-羟基-3,7,8-三甲氧基氧杂蒽酮、1,8-二羟基-3,7-二甲氧基氧杂蒽酮、1,7-二羟基-3,8-二甲氧基氧杂蒽酮和1,7,8-三羟基-3-甲氧基氧杂蒽酮。第一种化合物的结构不确定性通过全去偶氮核磁共振（ASIS-NMR）和二维核Overhauser效应光谱（2D NOESY）得以解决。
