New Naphthopyranone Glycosides from <i>Paepalanthus </i><i>vellozioides</i> and <i>Paepalanthus latipes</i>
作者:Wagner Vilegas、Anne Ligia Dokkeddal、Sonia Piacente、Luca Rastrelli、Cosimo Pizza
DOI:10.1021/np980082t
日期:1999.5.1
allopyranosyl (1-->6)glucopyranoside (3)-were isolated from the leaves of Paepalanthus vellozioides and Paepalanthus latipes and characterized by spectrometric methods, mainly electrospray mass spectrometry and 1D and 2D NMR experiments. These unusual glycosylated dihydronaphthopyranones may serve as taxonomic markers of the genus Paepalanthus, since these compounds were not detected in other genera
三种新化合物-3,4-二氢-10-羟基-7-甲氧基-3-(R)-甲基-1H-3,4-二氢萘-] 2,3c]-吡喃-1-酮-9-O- β-D-吡喃葡萄糖苷(1),3,4-二氢-10-羟基-7-甲氧基-3-(R)-甲基-1H-3,4-二氢萘-[2,3c]-吡喃-1-酮-9-O-β-D-吡喃葡萄糖基-(1-> 6)-吡喃葡萄糖苷(2)和3,4-二氢-10-二羟基-7-甲氧基-3-(R)-甲基-1H-3分别从Paepalanthus vellozioides和Paepalanthus latipes的叶子中分离出4-二氢萘-[[2,3c]-吡喃-1-酮-9-O-β-D-吡喃葡萄糖基(1-> 6)吡喃葡萄糖苷(3)]。由光谱方法表征,主要是电喷雾质谱和1D和2D NMR实验。这些不寻常的糖基化二氢萘并吡喃酮可作为Paepalanthus属的分类标志,因为这些化合物在Eriocaulaceae家族的其他属中均未检测到。