作者:Ferdinand Bohlmann、Michael Grenz、Autar K. Dahr、Mark Goodman
DOI:10.1016/0031-9422(81)85226-0
日期:1981.1
Abstract An investigation of the aerial parts of Gutierrezia dracunculoides afforded, in addition to known compounds, three new labdane derivatives, all related to lambertianic acid, 17-hydroxy- and 17-acetoxylambertianic acid and 7α- hydroxylambertianic acid, two esterified and three highly oxygenated flavones, 5,7,4′-trihydroxy-3,3′-dimethoxy- flavone-4′- O - [2-methylbutyrate] and isovalerate, 3′
摘要 对 Gutierrezia dracunculoides 地上部分的研究提供了除了已知化合物之外的三种新的劳丹丹衍生物,它们都与朗伯酸、17-羟基和 17-乙酰氧基朗伯酸和 7α-羟基琥珀酸有关,两种酯化和三种高度氧化黄酮,5,7,4'-三羟基-3,3'-二甲氧基-黄酮-4'-O-[2-甲基丁酸酯]和异戊酸酯,3',5'-二羟基-3,5,6,7,8 ,4'-六甲氧基黄酮、5,3',5'-三羟基-3,6,7,8,4'-五甲氧基黄酮和 5,7,3',5'-四羟基-3,6,8,4'-四甲氧基黄酮。通过光谱方法和一些化学转化阐明了结构。