作者:Murari M. Saha、Uttam K. Mallik、Asok K. Mallik
DOI:10.1016/0031-9422(91)80130-s
日期:1991.1
(-)-Isoglabrachromene, a new natural chromenoflavanone, and hexacosanyl caffeate and triacontanyl caffeate, two new esters, have been isolated together with 11 known flavonoids and betulinic acid from the stem bark of Pongamia glabra. The reason why the H-alpha and H-beta of 2'-hydroxy-6'-methoxychalcones appear at the same field in their H-1 NMR spectra is discussed.
从六月雪漆树属植物的茎皮中分离出了三种新的化合物,其中包括一个新颖的天然色烯黄酮(-)-异漆树烷色烯和两个新的咖啡酸酯(6E,10Z-三十烷基咖啡酸酯和6Z,10Z-二十二烷基咖啡酸酯),并从同一植物中分离出了11种已知的黄酮类化合物和齐墩果酸。讨论了2'-羟基-6'-甲氧基查尔酮的H-alpha和H-beta为何会在H-1 NMR光谱中出现在同一个区域内。